# Rebotomy vs Missing Num

The clearest difference is in-app purchases: Missing Num at none against Rebotomy's 10. Rebotomy's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 11 months). On price and device support there is nothing between them.

Both are free to download. Rebotomy sells 10 one-off in-app purchases. Missing Num asks for nothing beyond the download.

Rebotomy ships an update every 5 weeks, Missing Num every 11 months. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Rebotomy | Missing Num |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (24 ratings)](https://appshunter.io/ios/app/rebotomy/id448838420/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 87.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 8 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MassLight, Inc.](https://appshunter.io/developer/323124212) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## What reviewers say

### Rebotomy

[App page](https://appshunter.io/ios/app/rebotomy/id448838420)

Learn new languages through immersive, native-only audio and visual association. This app utilizes spaced repetition algorithms that adapt to your learning pace, incorporating speaking practice and voice recognition for effective skill development.

**Highlights:** Native language learning, Image-based sentence association, Adaptive spaced repetition, Speaking practice, Voice recognition, Multiple languages available

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| French 2 | $1.99 | one-time |
| Spanish 2 | $1.99 | one-time |
| Spanish 3 | $1.99 | one-time |
| Arabic *All Access Pass* | $14.99 | one-time |
| French *All Access Pass* | $14.99 | one-time |
| German *All Access Pass* | $14.99 | one-time |
| Italian *All Access Pass* | $14.99 | one-time |
| Portuguese *All Access Pass* | $14.99 | one-time |
| Russian *All Access Pass* | $14.99 | one-time |
| Spanish *All Access Pass* | $14.99 | one-time |

**What reviewers like**

- 👍 Great for learning languages
- 💡 Similar to Rosetta Stone, cheaper
- 🚀 Effective learning method
- 😃 Fun and engaging
- 📱 Portable and convenient

**What reviewers complain about**

- 👎 Difficult navigation
- 🐛 App crashes
- ⚠️ Inappropriate images
- ❓ Unclear interface
- 📉 Outdated for newer devices

**Reported bugs**

- Paid languages disappeared after phone change
- Paid languages corrupted and un-downloadable
- Restore purchase not working
- App crashes when going back through previous lessons
- Speech recognition crashes sometimes

**Requested features**

- Add American languages (Quechua, Guaraní)
- Add traditional Chinese characters
- Add English captions to images
- Add cartoon images for children
- Add writing practice activity


### Missing Num

[App page](https://appshunter.io/ios/app/missing-num/id868026877)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rebotomy free?

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

### Is Missing Num free?

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

### Do Rebotomy or Missing Num have ads?

Missing Num shows ads; Rebotomy does not.

### Which is updated more often, Rebotomy or Missing Num?

Rebotomy ships an update every 5 weeks, and Missing Num every 11 months. Most recently, Rebotomy was updated on October 12, 2026 and Missing Num on October 3, 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.*