# RedSheetCamera vs AdditionTraining

The clearest difference is in-app purchases: AdditionTraining at none against RedSheetCamera's 1. AdditionTraining also leads on update cadence (every 2 weeks vs every 15 months). RedSheetCamera's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RedSheetCamera sells 1 one-off in-app purchase. AdditionTraining asks for nothing beyond the download.

RedSheetCamera ships an update every 15 months, AdditionTraining every 2 weeks. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | RedSheetCamera | AdditionTraining |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 5 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [taishin miyamoto](https://appshunter.io/developer/1570395608) | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) |

## What reviewers say

### RedSheetCamera

[App page](https://appshunter.io/ios/app/redsheetcamera/id6451382182)

This study support app uses your camera to hide key information in your notes or textbooks. It then facilitates active recall practice to strengthen retention for exams, language learning, and certifications.

**Highlights:** Camera-based review of learning material, Adjustable information visibility, Uninterrupted study flow with simple controls, Supports consistent daily review, Active recall practice

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RedSheetCamera - Remove Ads | $1.99 | one-time |


### AdditionTraining

[App page](https://appshunter.io/ios/app/additiontraining/id6477338237)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RedSheetCamera free?

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

### Is AdditionTraining free?

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

### Do RedSheetCamera or AdditionTraining have ads?

AdditionTraining shows ads; RedSheetCamera does not.

### Which is updated more often, RedSheetCamera or AdditionTraining?

RedSheetCamera ships an update every 15 months, and AdditionTraining every 2 weeks. Most recently, RedSheetCamera was updated on September 10, 2026 and AdditionTraining on September 24, 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.*