# StudyTodo vs Retrieve

The clearest difference is in-app purchases: StudyTodo at none against Retrieve's 1. StudyTodo also leads on iOS requirement (15.1 vs 26.5). Retrieve's advantage is ads (none vs shown) and update cadence (every 2 days vs every 10 days). On price and device support there is nothing between them.

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

StudyTodo ships an update every 10 days, Retrieve every 2 days. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | StudyTodo | Retrieve |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 2 days** |
| Size | 39 MB | 5 MB |
| Requires iOS | **15.1** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tatsuya Sato](https://appshunter.io/developer/1879974502) | [Blackhook Group LLC](https://appshunter.io/developer/6782197776) |

## What reviewers say

### StudyTodo

[App page](https://appshunter.io/ios/app/studytodo/id6759635529)

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

**In-app purchases:** none


### Retrieve

[App page](https://appshunter.io/ios/app/retrieve-flashcards/id6796848437)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Retrieve | $9.99 | one-time |


## Frequently asked questions

### Is StudyTodo free?

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

### Is Retrieve free?

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

### Do StudyTodo or Retrieve have ads?

StudyTodo shows ads; Retrieve does not.

### Which is updated more often, StudyTodo or Retrieve?

StudyTodo ships an update every 10 days, and Retrieve every 2 days. Most recently, StudyTodo was updated on October 3, 2026 and Retrieve on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*