One source. Twelve ways to learn it.

Study hard.
Remember more.

Bring a PDF, lecture or notes. GoodOff turns it into flashcards, quizzes, podcasts and nine more ways to study it.

Start for free Get the app

Try a small sample first. Create an account only when you want to save your plan or continue.

Everything from one source

Twelve ways to learn what you bring.

Each format is generated from your source and kept together in one library.

Practice · 01 / 12

Decks

Flashcards scheduled by FSRS

GoodOff turns the important ideas in a PDF, notes, slides or lecture into editable question-and-answer cards. FSRS schedules each card from your Again, Hard, Good or Easy rating, so the review returns before the memory fades.

Focused front-and-back prompts, with explanations and hints
Fully editable: refine, add or remove cards at any time
Review the cards due today, or run through the whole deck

Learn more

Practice · 02 / 12

Quizzes

Adaptive questions with instant feedback

GoodOff writes multiple-choice and open-ended questions from your source and explains each answer. Your score shows what to study next.

Multiple-choice and open-ended questions
An explanation for every answer
Retakes and attempt history to measure improvement

Learn more

Practice · 03 / 12

Practice exams

Timed, exam-style runs with a score

Create a realistic practice exam from the material you need to master. Choose the number of questions and the time, take it in one focused sitting, then review your results.

Start from an exam template or build a custom exam
Between 5 and 100 questions, with a time limit
Results that show strengths and gaps

Listen & watch · 04 / 12

Podcast

Two hosts talk through your material

GoodOff turns your source into a two-host conversation that explains, questions and connects the material instead of reading it flatly. The transcript stays connected, so you can follow along or jump to any moment.

Choose how each host sounds
A one-minute recap or a ten-minute deeper review
Interactive transcript and playback up to 2×

Learn more

9:41

LibraryCell biology

KitPodcasts

Podcast · PlayingCell energy, explained12 min · Sep 26

0:4212:051x

TranscriptAlexSo why does a cell need ATP at all?SamThink of ATP as the cell’s energy currency. Moving, building proteins, copying DNA: every job spends it.AlexAnd most of it is made in the mitochondria?SamRight. Cellular respiration turns glucose and oxygen into ATP, and the biggest share comes from there.

PodcastGlycolysis in ten minutes8 min · Sep 24

app.goodoff.co/library/cell-biology/audio

Library / Cell biologySearch decks, notes, and classes⌘KPremiumAdd

← Back to library✦ Material workspaceLecture 4: Cellular respiration

PDF20 cardsStudied today

OverviewStudyQuizTutorMediaMore

Search podcasts...New Podcast

2 podcasts

Cell energy, explained12 min · 2 days ago · 2 voices12:05

Glycolysis in ten minutes8 min · 4 days ago · 2 voices8:12

TranscriptAlex: So why does a cell need ATP at all?Sam: Think of ATP as the cell’s energy currency. Moving, building proteins, copying DNA: every job spends it.

0:42 / 12:05Cell energy, explained1x

Listen & watch · 05 / 12

Video overviews

Narrated slides that explain the big ideas

GoodOff builds a short vertical video from your source: illustrated scenes with AI narration. Quiz scenes inside the video let you check yourself as you watch.

Scenes for hooks, concepts, examples and recaps
AI illustrations and narration, with captions
Focus on one concept or cover the whole source

Learn more

Explain · 06 / 12

Study guide

The key ideas, organised to review

GoodOff reads your source and organizes it into a concise guide: an overview, key concepts, definitions, likely exam questions and memory aids. You spend the time learning instead of formatting notes.

Key concepts in plain language
Important terms and definitions kept together
Likely questions with short model answers

Learn more

9:41

LibraryCell biology

KitStudy guide

Updated Sep 26, 2026ShareRegenerate

Overview

Cellular respiration is how cells turn the energy in glucose into ATP. It runs in three stages, and most of the ATP is made in the mitochondria.

Key Concepts

•Glycolysis: glucose splits into two pyruvate in the cytoplasm, making 2 ATP.
•Krebs cycle: in the mitochondrial matrix, pyruvate is broken down and its electrons are loaded onto NADH and FADH₂.
•Electron transport chain: on the inner membrane, those electrons drive ATP synthase, which makes most of the ATP.

Definitions

•ATP: adenosine triphosphate, the molecule cells use to store and move energy.

app.goodoff.co/library/cell-biology/study-guide

Library / Cell biologySearch decks, notes, and classes⌘KPremiumAdd

← Back to library✦ Material workspaceLecture 4: Cellular respiration

PDF20 cardsStudied today

OverviewStudyQuizTutorMediaMore

Updated Sep 26, 2026CopyRegenerate

Overview

Cellular respiration is how cells turn the energy in glucose into ATP. It runs in three stages, and most of the ATP is made in the mitochondria.

Key Concepts

•Glycolysis: glucose splits into two pyruvate in the cytoplasm, making 2 ATP.
•Krebs cycle: in the mitochondrial matrix, pyruvate is broken down and its electrons are loaded onto NADH and FADH₂.
•Electron transport chain: on the inner membrane, those electrons drive ATP synthase, which makes most of the ATP.

Definitions

•ATP: adenosine triphosphate, the molecule cells use to store and move energy.

Explain · 07 / 12

FAQ

The questions you'd ask, answered

GoodOff writes 8–12 questions and answers that cover the most important and most confusing points in your material. Every answer comes from the source you uploaded.

Answers grounded in your source
Copy the whole FAQ as markdown
Regenerate for a fresh set of questions

Learn more

9:41

LibraryCell biology

KitFAQ

Updated Sep 26, 2026ShareRegenerate

Q: What is ATP?

A: Adenosine triphosphate: the molecule cells use to store and move energy. Breaking one of its phosphate bonds releases energy for work.

Q: Where is most ATP made?

A: In the mitochondria. The electron transport chain on their inner membrane makes most of the ATP from each glucose.

Q: Why do cells need oxygen?

A: Oxygen is the final electron acceptor of the transport chain. Without it, the chain stops and the cell falls back on fermentation.

Q: What happens in glycolysis?

A: Glucose splits into two pyruvate molecules in the cytoplasm, with a net gain of 2 ATP.

app.goodoff.co/library/cell-biology/faq

Library / Cell biologySearch decks, notes, and classes⌘KPremiumAdd

← Back to library✦ Material workspaceLecture 4: Cellular respiration

PDF20 cardsStudied today

OverviewStudyQuizTutorMediaMore

Updated Sep 26, 2026CopyRegenerate

Q: What is ATP?

A: Adenosine triphosphate: the molecule cells use to store and move energy. Breaking one of its phosphate bonds releases energy for work.

Q: Where is most ATP made?

A: In the mitochondria. The electron transport chain on their inner membrane makes most of the ATP from each glucose.

Q: Why do cells need oxygen?

A: Oxygen is the final electron acceptor of the transport chain. Without it, the chain stops and the cell falls back on fermentation.

Q: What happens in glycolysis?

A: Glucose splits into two pyruvate molecules in the cytoplasm, with a net gain of 2 ATP.

Explain · 08 / 12

Infographic

One-page visual summary

GoodOff turns your material into a structured, one-page visual summary: key stats, concept sections and takeaways, laid out to scan.

Key stats at a glance
Sections with icons for concepts, formulas, dates and more
Flow diagrams, timelines and comparisons when the content calls for them

Learn more

9:41

LibraryCell biology

KitInfographic

Updated Sep 26, 2026ShareRegenerate

Cellular respiration at a glanceHow a cell turns glucose into ATP

3Stages2Net ATP from glycolysisO₂Final electron acceptor

GlycolysisIn the cytoplasmGlucose → 2 pyruvate

Krebs cycleIn the mitochondrial matrixLoads electrons onto NADH

Electron transportOn the inner membraneO₂ + electrons → H₂O

Key takeaways• Most ATP is made in the mitochondria.• No oxygen, no electron transport.

app.goodoff.co/library/cell-biology/infographic

Library / Cell biologySearch decks, notes, and classes⌘KPremiumAdd

← Back to library✦ Material workspaceLecture 4: Cellular respiration

PDF20 cardsStudied today

OverviewStudyQuizTutorMediaMore

Updated Sep 26, 2026Copy as textRegenerate

Cellular respiration at a glanceHow a cell turns glucose into ATP

3Stages2Net ATP from glycolysisO₂Final electron acceptor

Glycolysis• In the cytoplasm• Glucose → 2 pyruvate

Krebs cycle• In the mitochondrial matrix• Loads electrons onto NADH

Electron transport• On the inner membrane• O₂ + electrons → H₂O

Key takeaways• Most ATP is made in the mitochondria.• No oxygen, no electron transport.

Explain · 09 / 12

Slides

A presentation-ready deck

GoodOff organizes the key ideas of your source into a study-focused 16:9 deck with structured layouts and speaker notes. Scan it, explain it, or present it fullscreen.

Title, bullet, quote and big-number layouts
Speaker notes behind each slide
Fullscreen presenting with keyboard navigation

Learn more

app.goodoff.co/library/cell-biology/slides

Library / Cell biologySearch decks, notes, and classes⌘KPremiumAdd

← Back to library✦ Material workspaceLecture 4: Cellular respiration

PDF20 cardsStudied today

OverviewStudyQuizTutorMediaMore

Updated Sep 26, 2026Copy as textDownload PDFRegenerate

Slide 3Three stages

Glycolysis: glucose splits in the cytoplasm
Krebs cycle: electrons are harvested in the matrix
Electron transport: most ATP is made on the inner membrane

3 / 10OutlineHide notes

Notes

Walk through the stages in order, then stress that the electron transport chain only runs when oxygen is there.

Ask · 10 / 12

Sage

A tutor grounded in your sources, with citations

Sage reads your uploaded source and answers questions from it, citing the exact passages it used. If the answer is not in your material, it says so.

Ask by text, voice, image or file
Conversation history you can come back to
Research mode for deeper analysis

Learn more

9:41

LibraryCell biology

KitSage

All categories

Why do cells need ATP?9:41

Sage9:41

Cells spend ATP to power almost every job: moving, building proteins and copying DNA. Mitochondria make most of it through cellular respiration:

1.Glycolysis splits glucose in the cytoplasm.
2.The Krebs cycle strips its electrons in the mitochondria.
3.The electron transport chain turns them into most of the ATP.

Ask Sage anything...

app.goodoff.co/library/cell-biology/tutor

AI TutorLecture 4: Cellular respiration

Today

Why do cells need ATP?09:41

Cells spend ATP to power almost every job: moving, building proteins and copying DNA. [1] Mitochondria make most of it through cellular respiration:

1.Glycolysis splits glucose in the cytoplasm.
2.The Krebs cycle strips its electrons in the mitochondria.
3.The electron transport chain turns them into most of the ATP. [2]

12Lecture 4 · p. 12, p. 1509:41

Ask a question about this source…

Ask · 11 / 12

Visual explanations

Diagrams that show how it fits together

Turn a concept into a visual you can remember. Ground it in a source from your library, or start from the concept alone.

Four styles: diagram, flowchart, mind map and timeline
Optionally grounded in your own material
Kept in your visual library to return to anytime

app.goodoff.co/visuals/cellular-respiration

Library / VisualsSearch decks, notes, and classes⌘KPremiumAdd

Cellular respirationFlowchartSep 26, 2026

Download PNG

Glucose

Glycolysis

Krebs cycle

Electron transport chain

ATP

Explanation

Glucose is split in glycolysis, its electrons are harvested in the Krebs cycle, and the electron transport chain uses them to make most of the cell’s ATP.

Ask · 12 / 12

Tutor plugins

Coaching styles you can switch on

Shape the way your AI tutor teaches you. Switch on the coaching styles that suit you, from guiding questions to memory hooks.

Socratic Method: questions that guide you instead of answers
Step-by-Step: every problem in small numbered steps
Quiz As We Go: a quick check-in after each explanation

9:41

3 enabledShape the way your AI tutor teaches you

🤔Socratic MethodYour tutor guides you with questions instead of giving answers away

🧸Explain Like I’m 5Every explanation in the simplest possible terms

🔗Analogy EngineConnects new concepts to everyday things you already know

❓Quiz As We GoDrops a quick check-in question after every explanation

📶Step-by-StepBreaks every problem into small numbered steps

📝Exam Drill SergeantStrict, exam-focused coaching with timing pressure and grading

🧠Memory HooksAdds mnemonics and memory devices to everything you learn

🔥Hype CoachHigh-energy encouragement that keeps you going through hard topics

app.goodoff.co/tutor-plugins

Library / Tutor PluginsSearch decks, notes, and classes⌘KPremiumAdd

Tutor PluginsShape the way your AI tutor teaches you

3 enabled

🤔Socratic MethodActiveYour tutor guides you with questions instead of giving answers away

🧸Explain Like I’m 5Every explanation in the simplest possible terms

🔗Analogy EngineConnects new concepts to everyday things you already know

❓Quiz As We GoActiveDrops a quick check-in question after every explanation

📶Step-by-StepActiveBreaks every problem into small numbered steps

📝Exam Drill SergeantStrict, exam-focused coaching with timing pressure and grading

Save Changes

Go deeper: how the AI flashcard app works · why it's an AI education app built on your own material

YOUR FIRST STEPBuild an exam plan

Start with a short diagnostic, then focus each day on the concepts most likely to move your score.

UploadPDF, slides, image PasteNotes or a passage ImportQuizlet, Anki, CSV RecordLecture or thought

One source. Every way to learn it.

Turn One Source Into Flashcards, Quizzes, Study Guides, and More

Upload your material once and choose how you want to learn it. Every format stays connected to the same original source.

Your sourceBiology lecture · 24 pages

All connected to one source

Flashcards24 cards · FSRS scheduled

QUESTION · 1 OF 24

What is the role of ATP during cellular respiration?

ANSWER

The explanation is one tap away.

FSRS due · in 3 days Biology lecture · p. 14

One story, from source to confidence

Make it. Understand it. Keep it.

No tour of disconnected features. GoodOff reveals the right tool when your work makes it useful.

Create

Bring in a PDF, notes, a recording, a link, or an old study set. GoodOff makes the useful starting material.

One source becomes a ready first session.

Understand

See why an answer works and ask a tutor that stays grounded in the material you gave it.

A cited explanation closes the gap.

Remember

Practice adapts to what you know. Reviews return when they can do the most good.

Today stays short and specific.

Prove readiness

Use a quiz or mock exam when there is enough material, then see weak areas and the exact next action.

Readiness turns into a plan, not a score alone.

02 · Understand Go past the first right answer.

Learn Deeper With a Source-Grounded AI Tutor

Ask questions, identify knowledge gaps, and receive explanations grounded in the material you uploaded.

QUESTION · GUARD CELLSWhy do guard cells open in light?

Water moves into the guard cells.

Right answer. Now explain what creates the gradient.

Follow the thread

Choose your study pace

Two plans. One clear trial policy.

Pro gives you unlimited AI decks, quizzes, tutoring and podcasts, with fair-use daily limits.

A card-required 3-day free trial of Pro may be available when both the new account and selected offer are eligible. Availability is confirmed in the app.

Pro

Study anything with unlimited AI. For active learners who study every week.

Unlimited AI decks, quizzes, flashcards & podcasts
Unlimited uploads — PDFs, lectures & YouTube
Unlimited AI tutor chats — text or voice
Unlimited AI visuals — diagrams & mind maps

3 day free trial

Try GoodOff for $0

If eligible: 3 days, then $120/yr

Fair-use daily limits apply. See fair use

Trial terms: Card required. A card-required 3-day free trial of Pro may be available when both the new account and selected offer are eligible. The selected plan renews after 3 days at the selected price unless you cancel first. Availability is confirmed in the app.

Before you sign up

Questions Students Ask About GoodOff

What is GoodOff?

GoodOff — also searched as good off — is an AI study app that turns one source into a connected study kit. Upload your material once, create several study formats, ask questions about the source, and schedule flashcard reviews with FSRS spaced repetition.

What study materials can GoodOff create?

GoodOff can create flashcards, quizzes, study guides, podcasts, slides, infographics, visual overviews, and source-grounded tutoring from the same uploaded material.

What files and sources can I upload?

GoodOff supports notes and pasted text, PDFs, Word documents, PowerPoint slides, images, supported audio files, and web page URLs.

How is GoodOff different from Anki, Quizlet, or ChatGPT?

GoodOff focuses on a connected workflow: multiple study formats and source-grounded tutoring can come from the same material. Dedicated comparison pages explain the product differences without claiming that one tool is right for every student.

Does GoodOff use spaced repetition?

Yes. GoodOff uses FSRS spaced repetition to schedule flashcard reviews based on your review history and recall feedback.

Is GoodOff’s AI tutor grounded in my sources?

Yes. Sage uses your uploaded material as context and provides citations so you can compare an answer with the original source.

Can I edit AI-generated flashcards and quizzes?

Yes. You can review and edit generated flashcards and quizzes before using them in your study workflow.

Which subjects and exams can I use GoodOff for?

You can use GoodOff with study material from different subjects and with preparation material for supported exams or certifications. Results depend on the source you provide, so verify important information against the original material.

How does the GoodOff trial work?

Card required. A card-required 3-day free trial of Pro may be available when both the new account and selected offer are eligible. The selected plan renews after 3 days at the selected price unless you cancel first. Availability is confirmed in the app.

06 · Begin Drop it in. Know it for good.

Your Next Study Move Starts With One Source.

Turn the material you already have into the formats you need to understand it, practice it, and remember it.

Build my study plan View Plans

Learn Deeper With a Source-Grounded AI Tutor

Ask questions, identify knowledge gaps, and receive explanations grounded in the material you uploaded.

QUESTION · GUARD CELLSWhy do guard cells open in light?

Water moves into the guard cells.

Right answer. Now explain what creates the gradient.

Follow the thread

Questions Students Ask About GoodOff

What is GoodOff?

What study materials can GoodOff create?

GoodOff can create flashcards, quizzes, study guides, podcasts, slides, infographics, visual overviews, and source-grounded tutoring from the same uploaded material.

What files and sources can I upload?

GoodOff supports notes and pasted text, PDFs, Word documents, PowerPoint slides, images, supported audio files, and web page URLs.

How is GoodOff different from Anki, Quizlet, or ChatGPT?

Does GoodOff use spaced repetition?

Yes. GoodOff uses FSRS spaced repetition to schedule flashcard reviews based on your review history and recall feedback.

Is GoodOff’s AI tutor grounded in my sources?

Yes. Sage uses your uploaded material as context and provides citations so you can compare an answer with the original source.

Can I edit AI-generated flashcards and quizzes?

Yes. You can review and edit generated flashcards and quizzes before using them in your study workflow.

Which subjects and exams can I use GoodOff for?

How does the GoodOff trial work?

Study hard. Remember more.

Twelve ways to learn what you bring.

Decks

Quizzes

Practice exams

Podcast

Video overviews

Study guide

FAQ

Infographic

Slides

Sage

Visual explanations

Tutor plugins

What is the role of ATP during cellular respiration?

Make it. Understand it. Keep it.

Create

Understand

Remember

Prove readiness

Learn Deeper With a Source-Grounded AI Tutor

Spot the gap

Ask Sage

Bring it back

Two plans. One clear trial policy.

Questions Students Ask About GoodOff

Your Next Study Move Starts With One Source.

Study hard. Remember more.

Twelve ways to learn what you bring.

Decks

Quizzes

Practice exams

Podcast

Video overviews

Study guide

FAQ

Infographic

Slides

Sage

Visual explanations

Tutor plugins

What is the role of ATP during cellular respiration?

Make it. Understand it. Keep it.

Create

Understand

Remember

Prove readiness

Learn Deeper With a Source-Grounded AI Tutor

Spot the gap

Ask Sage

Bring it back

Two plans. One clear trial policy.

Questions Students Ask About GoodOff

Your Next Study Move Starts With One Source.

Study hard.
Remember more.

Study hard.
Remember more.