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- 1 study path per month
- 5 activities a day: quizzes, flashcards, mini-games, mind maps, mock exams
- 1 summary, study sheet or study plan a day
- Lab: 20 messages a day
- Homework: 2 a day, 5 a week
Your notes become your study path.
Graduo is an AI study app for students aged 13 and up. Snap a photo of your notes: Grabo turns them into a clear study plan, then flashcards, quizzes and games to make it stick.
Free to start · No ads · iPhone and web · 21 languages
CHAPTER 3
Arithmetic sequences
Each term is the previous one plus the same number r, called the common difference.
Example: 3, 5, 7, 9… (r = 2).
General term: uₙ = u₀ + n × r
MATHS · HIGH SCHOOLCHAPTER 1 · 1 OF 3
- 1.1 · DONESpot the difference r
- 1.2 · IN PROGRESS · 12 MINFind any term uₙ
- 1.3 · UP NEXTCheck what you know
QUIZ · ARITHMETIC SEQUENCES3/5
What is u₅?
Spot on! It’s 13: u₅ = 3 + 5 × 2.
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What do you have to do tonight?
Pick one: Grabo shows you how Graduo handles it.
Stuck? Just ask.
In the Lab, Grabo answers clearly, explains with an example, then offers to quiz you or turn it into flashcards.
Explore the LabExample
Why does uₙ₊₁ − uₙ never change?
Because you always add the same number: the common difference r.
With 3, 5, 7, 9… you add 2 each time. So:
uₙ₊₁ − uₙ = r = 2
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- Summarize
Ask Grabo…
Interactive example
A hint, not the answer.
That's Coach mode for homework: when you get it wrong, Grabo nudges you in the right direction and lets you find it. Give it a go.
Explore homework helpMATHS · ARITHMETIC SEQUENCES
Find u₇ for the arithmetic sequence with u₀ = 3 and r = 2.
Everything you need to study, in one place.
Activities built from your own notes: you revise what your teacher gave you, not strangers' study sheets.
- LabAsk anything, Grabo explains
- Study pathsYour notes become a study plan
- FlashcardsMake it stick for good
- QuizzesTest yourself on your own notes
- Mini-gamesMatching, fill-in, ordering, true or false…
- Mock examsPractise like it's exam day
- HomeworkHints so you find it yourself
- Summaries & podcastsStudy sheets, mind maps, audio
Free to start. Pro to unlock it all.
Start without paying. Go Pro when you need it.
Pro
$15.99per month
or $49.99 a year, about $4.17 a month
- Unlimited study paths, with podcast
- Unlimited mini-games, flashcards and mind maps
- Unlimited study sheets, summaries and essays
- Unlimited homework
- 60 messages a day with Grabo
App Store prices (United States), with a 3-day free trial on iPhone. On the web, you pay by card. You can cancel renewal at any time from the platform you subscribed on: access stays open until the end of the paid period.
Good at explaining? Make it a video.
Graduo's creator program is looking for students who can make a lesson click in 30 seconds. We back you up, and selected videos get paid.
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Graduo, in your pocket.
On iPhone, and on the web with the same account. Start on your laptop, finish on the bus.
Android: coming soon to Google Play
You might be wondering…
Is Graduo free?
Yes, to start. The free plan includes one study path a month and, every day, 5 activities (quizzes, flashcards, mini-games, mind maps, mock exams), one summary or study sheet, 20 Lab messages and 2 homework sessions (5 a week). Pro lifts the limits on study paths, activities, study sheets and homework, and raises the Lab to 60 messages a day. Full details are on the Pricing page.
Will Grabo do my homework for me?
No. For homework, Grabo never hands you the final answer. In Coach mode, he guides you step by step with hints that get more precise if you're stuck; in Flash mode, he gets straight to the point in short steps. Either way, you're the one who finds it.
Which devices does it work on?
iPhone (App Store) and the web, from an up-to-date browser, with the same account. The Android app is coming soon to Google Play; until then, the web version works on an Android phone.
Where does the content come from?
From your notes. Graduo uses Gemini, Google's AI, to turn what you import (a photo, PDF, text or YouTube video) into study paths, summaries and exercises. AI can make mistakes: if in doubt, check your notes or ask your teacher.
Which subjects and levels?
Any subject you have notes for, from middle school to university. You choose your level and Grabo adapts how he explains: vocabulary, examples, length.
Is my data safe?
Your data is never sold and there are no ads in Graduo. You can export your data or delete your account from the app (Profile, then Settings). It's all explained on the Safety page.
Which languages?
21 languages, in the app and on the site: English, French, Spanish, German, Italian, Portuguese, Dutch, Polish, Japanese, Turkish and more.
How is it different from ChatGPT?
Graduo starts from your own notes and turns them into a study plan, exercises and games at your level. And for homework, Coach mode helps you find the answer instead of copying it.
Another question? The help centre has the answer.