# Mimir vs Radiant

The clearest difference is monetization model: Mimir at free with in-app purchases against Radiant's subscription. Mimir also leads on review sentiment (56% vs 37%). Radiant's advantage is ratings volume (975 vs 149) and iOS requirement (15.1 vs 26.1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Mimir sells 2 in-app purchases, starting at $12.99 per month and Radiant sells 8 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Radiant holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Radiant has 975 ratings behind it against 149, so its average is the more settled of the two. Written reviews complicate that: 56% of Mimir's written reviews are positive against 37% of Radiant's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 10 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Mimir | Radiant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (149 ratings)](https://appshunter.io/ios/app/mimir-general-knowledge-quiz/id6511234817/reviews) | **[4.8 (975 ratings)](https://appshunter.io/ios/app/radiant-speaking-challenges/id6751936053/reviews)** |
| Number of ratings | 149 | **975** |
| Positive reviews | **55.6% of reviews** | 36.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 69 MB | 123 MB |
| Requires iOS | 26.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RandomWalk](https://appshunter.io/developer/1755557478) | [Loshi Technologies, LLC](https://appshunter.io/developer/1786701886) |

## 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 |


### Radiant

[App page](https://appshunter.io/ios/app/radiant-speaking-challenges/id6751936053)

This app offers guided speaking challenges to enhance articulation, speech clarity, and confidence. It focuses on natural improvements by helping users understand their speaking patterns and make them more effective in everyday conversations.

**Highlights:** Guided speaking challenges, Improve articulation, Enhance speech clarity, Boost speaking confidence, Track speaking patterns, Natural speech improvement

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Radiant Gold Weekly | $1.99 | per 7 days |
| Radiant Gold Weekly | $2.99 | per 7 days |
| Radiant Gold Weekly | $6.99 | per 7 days |
| Radiant Gold Annual | $9.99 | per year |
| Radiant Gold Weekly | $9.99 | per 7 days |
| Radiant Gold Annual | $19.99 | per year |
| Radiant Gold Annual | $39.99 | per year |
| Radiant Gold Annual | $79.99 | per year |


## Frequently asked questions

### Is Mimir free?

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

### Is Radiant free?

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

### Which has better reviews, Mimir or Radiant?

Radiant is rated higher. Mimir averages 4.6 out of 5 from 149 ratings, while Radiant averages 4.8 from 975 ratings.

### Do Mimir or Radiant have ads?

Neither Mimir nor Radiant shows ads.

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

Mimir ships an update every 10 days, and Radiant every 10 days. Most recently, Mimir was updated on November 5, 2026 and Radiant on November 5, 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.*