01 · CIRCLE & UNDERSTAND
Circle instead of retyping.
Circle what you don’t understand. The explanation is attached as a card at exactly that spot – not in a chat somewhere else.
Circle & understand →THE NOTE-TAKING APP WITH AI FOR IPAD
Your study material.
All connected.
Your subjects in a cabinet. The otter beside your questions.
And your own notes, ready when it’s time to study.
MORE THAN A NOTEBOOK
Three things Otriva does differently.
Otriva handles writing, PDFs and organizing too. But that’s just where it starts.
02 · IN YOUR LANGUAGE
Understand German – in your native language.
Understand words, tasks and worksheets in your language, right beside the original. With simple German and sentence starters.
Understand in your language →
03 · QUIZ ME
Quizzes from your own handwriting.
Cover answers in your notes and test yourself – on iPad or on the go on iPhone.
Quiz me & iPhone →01 · TRY IT
Circle the formula.
This is exactly how circling works in the app – here with prepared answers. Pick a subject and try it.
Try the AI penInteractive example
Mathematics
AI pen active
AI pen activeThe derivative
Why does this become 2x?
The slope at every point.
The derivative of x² is 2x. Substitute a value for x to get the slope of the curve at that point.
x = 3Slope = 6
Circle the formula.
Or tap it.
Or tap it.
Interactive example with prepared answers. Nothing you enter is sent anywhere.
THE DIFFERENCE
Lots of apps have AI now. What matters is where the help lands.
Note-taking apps like Goodnotes or Notability explain and quiz you – in a sidebar or a separate study area. Otriva does it right on your page.
| Feature | Note-taking app with AI | AI chat | Otriva |
|---|---|---|---|
| Handwriting, PDFs, subjects | Yes | No | Yes |
| Ask about a passage | Select it, answer in a sidebar or chat | Copy or retype the text | Circle it, answer as a card at the spot |
| Quizzes | Flashcards or quizzes generated from your notes | In the chat, separate from your notes | Answers covered right in your notes |
| Understand German in your language | Partly: translate via chat | Translation, separate from the original | Word card with article, simple German, sentence starters |
Compared by type of app. In detail with Goodnotes, Notability and Apple Notes – with sources →
THE FOUNDATION · FREE
Everything a notebook needs.
No subscription, no account. The three things above come on top.
- Cabinet & subjects
- Every subject in its place, with topics and pages inside.
- Apple Pencil
- Handwriting, highlighter, eraser – just like paper.
- PDFs
- Import, annotate and export worksheets and slides.
- iPhone
- Read your notes via iCloud, with your timetable.
App screenshot loading …
START FOR FREE
Your notebook stays free.
Writing, organizing, and PDFs do not require a subscription.
Plus gives you more room for explanations and language support.
Only successfully delivered AI answers count. Unused answers expire at the end of each period. Plus renews automatically until canceled. Apple shows the applicable price before purchase. AI features require internet access and your consent; additional safety and daily limits may apply.
Still have a question?
Otriva Help in GermanHow does Otriva Plus work?
Plus includes 500 successfully delivered AI answers per monthly Apple subscription period. The current US price is $3.99 per month. The period begins with your purchase or renewal, and usage is shared across the subscriber’s devices. Unused answers do not roll over.
The subscription renews automatically and can be canceled through Apple. Your notes and saved cards remain after Plus ends; new AI answers then use the free allowance again. Revoking your AI consent does not cancel the subscription. Detailed help and terms are currently available in German.
Who is Otriva for, and what does it require?
Otriva is for people aged 16 and up who take notes, annotate PDFs, and organize materials for school or university on an iPad. Write on iPad with iPadOS 26 or later and a compatible Apple Pencil. On iPhone with iOS 26 or later, read your notes, view your timetable, and use “Quiz me”. AI features require internet access and your consent; technical safety and daily limits may also affect availability.
Can I use Otriva without AI?
Yes. The otter’s AI help is optional. You can write with Apple Pencil, organize notes, and work with PDFs without enabling AI. “Quiz me” from your own notes also runs locally and uses no AI answers. You can export individual pages or complete topics as PDFs.
Where can I download Otriva?
Otriva is available on the US App Store for iPad and iPhone. The download is free. You need iPadOS 26 or iOS 26 or later and must be at least 16 years old. No separate Otriva account is required. The app is available in English and German.
Does the demo use live AI?
The website uses real app screenshots and an interactive demo with prepared answers. The demo does not send content to an AI service. In the app, an explanation is created from the selected passage and the context needed to answer it. AI answers can be wrong, so check them against your course materials.
Do I need an Apple Pencil?
A compatible Apple Pencil is intended for handwriting and circling passages on iPad. You do not need a Pencil to read and study on iPhone. On iPad, you can also ask a question across the notes in a topic without a Pencil.
What happens to my notes?
Your notes are stored locally first. Optional iCloud sync brings your iPad notes to iPhone; both devices need the same Apple Account with iCloud enabled for Otriva. For an AI explanation, the selected passage and the context needed to answer it are processed after you consent. Detailed information about storage, iCloud, and AI processing is in the current German privacy policy.
Who develops Otriva?
Otriva is developed by Leon Karim Valentin. As a product developer, he works across software, AI, and embedded systems. With Otriva, he is developing an interactive study notebook for iPad with an iPhone companion. Read about Otriva and its developer or visit LinkedIn; contact details are in the current German legal notice.
NOW ON THE APP STORE
Your study material.
Connected from here.
Download Otriva for free For iPad & iPhone. Ages 16+. No separate account. App in English and German.