# StudyTodo vs Cardify

The clearest difference is update cadence: Cardify at every 3 days against StudyTodo's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

StudyTodo ships an update every 10 days, Cardify every 3 days. The most recent releases landed on September 20, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | StudyTodo | Cardify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 39 MB | 77 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tatsuya Sato](https://appshunter.io/developer/1879974502) | [Kunai](https://appshunter.io/developer/1665362207) |

## What reviewers say

### StudyTodo

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

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

**In-app purchases:** none


### Cardify

[App page](https://appshunter.io/ios/app/cardify-ai-flashcard-learning/id6761316896)

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

**In-app purchases:** none


## Frequently asked questions

### Is StudyTodo free?

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

### Is Cardify free?

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

### Do StudyTodo or Cardify have ads?

Both StudyTodo and Cardify show ads.

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

StudyTodo ships an update every 10 days, and Cardify every 3 days. Most recently, StudyTodo was updated on September 20, 2026 and Cardify on September 6, 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.*