# Study Sprint Timer vs Yanlış Defteri

The clearest difference is in-app purchases: Yanlış Defteri at none against Study Sprint Timer's 1. Yanlış Defteri also leads on ads (none vs shown) and iOS requirement (13.0 vs 18.0). Study Sprint Timer's advantage is update cadence (every 5 days vs fortnightly). On price and device support there is nothing between them.

Both are free to download. Study Sprint Timer sells 1 in-app purchase, starting at $19.99 per year. Yanlış Defteri asks for nothing beyond the download.

Study Sprint Timer ships an update every 5 days, Yanlış Defteri fortnightly. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Study Sprint Timer | Yanlış Defteri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 76 MB | 6 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harun DOGDU](https://appshunter.io/developer/6788031683) | [Mustafa Demirer](https://appshunter.io/developer/1536142484) |

## What reviewers say

### Study Sprint Timer

[App page](https://appshunter.io/ios/app/study-sprint-timer/id6788031531)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Premium | $19.99 | per year |


### Yanlış Defteri

[App page](https://appshunter.io/ios/app/yanls-defteri-soru-takibi/id6793074504)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Study Sprint Timer free?

Study Sprint Timer is free to download, with in-app purchases available.

### Is Yanlış Defteri free?

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

### Do Study Sprint Timer or Yanlış Defteri have ads?

Study Sprint Timer shows ads; Yanlış Defteri does not.

### Which is updated more often, Study Sprint Timer or Yanlış Defteri?

Study Sprint Timer ships an update every 5 days, and Yanlış Defteri fortnightly. Most recently, Study Sprint Timer was updated on September 17, 2026 and Yanlış Defteri on September 9, 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.*