# StudyTodo vs Loop Revision

The clearest difference is in-app purchases: StudyTodo at none against Loop Revision's 3. Loop Revision's advantage is ads (none vs shown) and update cadence (every 3 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Loop Revision sells 3 in-app purchases, starting at $4.99 per month. StudyTodo asks for nothing beyond the download.

StudyTodo ships an update every 10 days, Loop Revision every 3 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | StudyTodo | Loop Revision |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 39 MB | 41 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tatsuya Sato](https://appshunter.io/developer/1879974502) | [Sixmaiti Debbarma](https://appshunter.io/developer/6797239370) |

## What reviewers say

### StudyTodo

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

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

**In-app purchases:** none


### Loop Revision

[App page](https://appshunter.io/ios/app/loop-revision-spaced-review/id6797239368)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Revision Loop Plus | $4.99 | per month |
| Loop Scholar | $9.99 | per month |
| Loop Pro | $19.99 | per month |


## Frequently asked questions

### Is StudyTodo free?

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

### Is Loop Revision free?

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

### Do StudyTodo or Loop Revision have ads?

StudyTodo shows ads; Loop Revision does not.

### Which is updated more often, StudyTodo or Loop Revision?

StudyTodo ships an update every 10 days, and Loop Revision every 3 days. Most recently, StudyTodo was updated on November 9, 2026 and Loop Revision 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.*