# Oivalla: Master Any Topic — Lesson Built Around You

> Lesson Built Around You (iPhone/iPad app by Invisible Hours UG (haftungsbeschrankt).)

- Source: https://appshunter.io/ios/app/oivalla-master-any-topic/id6759012740 (this page in markdown: same URL + `.md`)
- Developer: [Invisible Hours UG (haftungsbeschrankt)](https://appshunter.io/developer/1810089843)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 18.0 · 72 MB
- Languages: English
- Released: 2026-03-02
- Data updated: 2026-06-21
- User reviews in markdown: https://appshunter.io/ios/app/oivalla-master-any-topic/id6759012740/reviews.md

## What is Oivalla?

Tired of reading articles, watching tutorials, and taking notes, only to forget everything a week later?

It's not your fault. Your brain mistakes familiarity for understanding. You read something, think "yeah, I get this", and can't explain it an hour later. That's the fluency illusion, and every app that just shows you content makes it worse.

Oivalla fixes this. Type any topic, paste your notes, snap a photo, or drop a URL. Oivalla builds a personal course with micro-lessons and quizzes that prove real comprehension. You don't move on until you actually understand.

HOW IT WORKS
1. Type a topic, paste text, snap a photo, or share a URL
2. A quick diagnostic finds what you already know
3. Lessons explain concepts through analogies from your world
4. Quizzes prove you understand — with "here's why" feedback
5. New branches grow as your comprehension deepens

FITS YOUR LIFE
5, 10, 15, or 30-minute sessions. Learn on your commute, at lunch, or before bed. No rigid curriculum — learn what matters to you, when it matters.

WHY IT ACTUALLY WORKS
Your learning tree only grows when you prove comprehension. Every lesson adapts to your energy and what you already know. No wasted time. No fake progress.

No streaks. No badges. No illusions. Just the moment it actually clicks.

Free to try.

Questions? oivalla@invisiblehours.net
Privacy: https://oivalla.com/privacy
Terms: https://oivalla.com/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Subscription | $14.99 | per month |
| Yearly subscription | $79.99 | per year |



## Version history (last 5 releases)

### 1.10.0 — 2026-05-04

You can now generate even longer courses, and see the whole outlines.

### 1.7.0 — 2026-03-30

You can now generate even longer courses, and see the whole outlines.

### 1.6.0 — 2026-03-29

You can now generate even longer courses, and see the whole outlines.

### 1.5.0 — 2026-03-27

You can now generate even longer courses, and see the whole outlines.

### 1.4.0 — 2026-03-18

Lessons and quizzes now always match your language — no more random English answers when you're learning in German, Japanese, or any other language.

## More apps by Invisible Hours UG (haftungsbeschrankt)

- [My Meals - Easy Meal Planning](https://appshunter.io/ios/app/my-meals-easy-meal-planning/id6639613921)
- [Seriatim Reader](https://appshunter.io/ios/app/seriatim-reader/id6756240539)

All apps by Invisible Hours UG (haftungsbeschrankt): https://appshunter.io/developer/1810089843

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-21.*