# Sage vs Hata Defteri

The clearest difference is update cadence: Hata Defteri at every 3 weeks against Sage's every 2 months. Hata Defteri also leads on device support and iOS requirement (15.1 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. Sage sells 3 in-app purchases, starting at $2.99 per 7 days and Hata Defteri sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Sage ships an update every 2 months, Hata Defteri every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Sage | Hata Defteri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 17 MB | 43 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Selin Gursoy Yucel](https://appshunter.io/developer/1871760676) | [Cagatay EMEKCI](https://appshunter.io/developer/1889162934) |

## What reviewers say

### Sage

[App page](https://appshunter.io/ios/app/sage-study-coach/id6760980821)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $24.99 | per year |


### Hata Defteri

[App page](https://appshunter.io/ios/app/hata-defteri/id6775034765)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Aylık Pro Plan | $1.99 | per month |
| 1 Yıllık Pro Plan | $19.99 | per year |


## Frequently asked questions

### Is Sage free?

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

### Is Hata Defteri free?

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

### Which is updated more often, Sage or Hata Defteri?

Sage ships an update every 2 months, and Hata Defteri every 3 weeks. Most recently, Sage was updated on October 31, 2026 and Hata Defteri 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.*