# Stella vs Math Gallery

The clearest difference is in-app purchases: Math Gallery at none against Stella's 10. Math Gallery also leads on update cadence (every 2 days vs every 8 days). Stella's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Stella sells 10 in-app purchases, starting at $5.99 per 7 days. Math Gallery asks for nothing beyond the download.

Stella ships an update every 8 days, Math Gallery every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stella | Math Gallery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (3.6K ratings)](https://appshunter.io/ios/app/stella-learn-spanish-ai/id6739937896/reviews)** | — |
| Number of ratings | **3.6K** | — |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 225 MB | 11 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HONG KONG BETENSH LIMITED](https://appshunter.io/developer/1735878154) | [Naoki Chiba](https://appshunter.io/developer/1895372512) |

## What reviewers say

### Stella

[App page](https://appshunter.io/ios/app/stella-learn-spanish-ai/id6739937896)

Practice Spanish through AI-powered conversations and interactive lessons. Get instant feedback on pronunciation and grammar to build real-world speaking confidence. Personalized learning paths adapt to your progress, from beginner to advanced.

**Highlights:** AI conversation practice, Pronunciation and speaking training, Grammar and vocabulary lessons, Listening and reading comprehension, Interactive quizzes, Personalized learning paths

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stella AI PRO: Weekly | $5.99 | per 7 days |
| Stella AI PRO: Weekly | $7.99 | per 7 days |
| Stella AI PRO: Weekly Plan | $7.99 | per 7 days |
| Stella AI PRO: Month | $19.99 | per month |
| Free Trial Plan | $29.99 | per year |
| Stella AI PRO: Annual | $29.99 | per year |
| Stella AI PRO: Annual | $39.99 | per year |
| Stella AI PRO: Annual | $49.99 | per year |
| Stella AI PRO: Annual | $49.99 | per year |
| Stella AI PRO: Annual | $59.99 | per year |

**What reviewers like**

- 🤩 Fun and enjoyable app
- 👍 Good for beginners

**What reviewers complain about**

- 🤖 Inaccurate speech recognition
- 🤔 Limited content and lessons
- 🙄 Misleading advertising
- 💰 Overpriced for the features
- 🐛 Frequent app crashes and freezes

**Reported bugs**

- App freezing and crashing during lessons
- Incorrect answers marked as correct
- Inability to progress through lessons

**Requested features**

- More advanced lessons and content
- Improved speech recognition and feedback
- Addition of songs and music-based learning
- Better customer support and responsiveness


### Math Gallery

[App page](https://appshunter.io/ios/app/math-gallery-visual-math/id6818462769)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stella free?

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

### Is Math Gallery free?

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

### Do Stella or Math Gallery have ads?

Neither Stella nor Math Gallery shows ads.

### Which is updated more often, Stella or Math Gallery?

Stella ships an update every 8 days, and Math Gallery every 2 days. Most recently, Stella was updated on November 4, 2026 and Math Gallery on October 31, 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.*