# MemoryPlanet vs AI Study Sheet

The clearest difference is in-app purchases: MemoryPlanet at none against AI Study Sheet's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AI Study Sheet sells 1 one-off in-app purchase. MemoryPlanet asks for nothing beyond the download.

MemoryPlanet ships an update every 2 days, AI Study Sheet every 3 days. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | MemoryPlanet | AI Study Sheet |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 6 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [业顷 蓝](https://appshunter.io/developer/6773348134) | [Masaki Iino](https://appshunter.io/developer/6778272211) |

## What reviewers say

### MemoryPlanet

[App page](https://appshunter.io/ios/app/memoryplanet-flashcards/id6773370158)

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

**In-app purchases:** none


### AI Study Sheet

[App page](https://appshunter.io/ios/app/ai-study-sheet-active-recall/id6782023263)

Transform existing study materials into active-recall quizzes with AI. Snap photos or import PDFs, and the app automatically masks key terms for spaced repetition. Review materials with an auto-reveal mode that adapts to your learning behavior.

**Highlights:** Import photos and PDFs, Automatic AI masking of key terms, Review reminders, Auto Study Mode with sequential reveal, Adaptive learning based on study behavior, Organized study material library, Flexible material viewing and editing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Saves | $4.99 | one-time |


## Frequently asked questions

### Is MemoryPlanet free?

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

### Is AI Study Sheet free?

AI Study Sheet is free to download, with in-app purchases available.

### Do MemoryPlanet or AI Study Sheet have ads?

Neither MemoryPlanet nor AI Study Sheet shows ads.

### Which is updated more often, MemoryPlanet or AI Study Sheet?

MemoryPlanet ships an update every 2 days, and AI Study Sheet every 3 days. Most recently, MemoryPlanet was updated on October 9, 2026 and AI Study Sheet on October 13, 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.*