# Mimir vs Umbra

The clearest difference is in-app purchases: Umbra at none against Mimir's 2. Mimir's advantage is update cadence (every 10 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mimir sells 2 in-app purchases, starting at $12.99 per month. Umbra asks for nothing beyond the download.

Mimir ships an update every 10 days, Umbra every 4 weeks. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Mimir | Umbra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (128 ratings)](https://appshunter.io/ios/app/mimir-general-knowledge-quiz/id6511234817/reviews)** | — |
| Number of ratings | **128** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 69 MB | 2 MB |
| Requires iOS | 26.1 | **26.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RandomWalk](https://appshunter.io/developer/1755557478) | [Justus Beyer](https://appshunter.io/developer/6798668049) |

## What reviewers say

### Mimir

[App page](https://appshunter.io/ios/app/mimir-general-knowledge-quiz/id6511234817)

This app makes learning an adventure with an AI-powered tutor that adapts to your learning style. It uses vibrant visuals and interactive conversations to make complex topics engaging and easy to understand, covering a wide range of subjects.

**Highlights:** AI-powered adaptive tutor, Interactive visual learning, Engaging conversational learning, Wide range of topics, Personalized learning experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mimir Pro - Monthly | $12.99 | per month |
| Mimir Pro - Yearly | $89.99 | per year |


### Umbra

[App page](https://appshunter.io/ios/app/umbra-solar-eclipse-tracker/id6798668047)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mimir free?

Mimir is free to download, with in-app purchases available.

### Is Umbra free?

Umbra is free to download, with no in-app purchases.

### Do Mimir or Umbra have ads?

Neither Mimir nor Umbra shows ads.

### Which is updated more often, Mimir or Umbra?

Mimir ships an update every 10 days, and Umbra every 4 weeks. Most recently, Mimir was updated on October 27, 2026 and Umbra on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*