# Not Defteri vs AçıkSilivri

The clearest difference is update cadence: Not Defteri at every 3 days against AçıkSilivri's monthly. Not Defteri also leads on device support (3 vs 1) and iOS requirement (10.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

Not Defteri ships an update every 3 days, AçıkSilivri monthly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Not Defteri | AçıkSilivri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 16 MB | 15 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Nezir Volkan Solak](https://appshunter.io/developer/1329295087) | [Can Tasdemir](https://appshunter.io/developer/6779019506) |

## What reviewers say

### Not Defteri

[App page](https://appshunter.io/ios/app/not-defteri-nvs/id1343325064)

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

**In-app purchases:** none


### AçıkSilivri

[App page](https://appshunter.io/ios/app/acksilivri/id6779019504)

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

**In-app purchases:** none


## Frequently asked questions

### Is Not Defteri free?

Not Defteri is free to download, with no in-app purchases.

### Is AçıkSilivri free?

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

### Do Not Defteri or AçıkSilivri have ads?

Neither Not Defteri nor AçıkSilivri shows ads.

### Which is updated more often, Not Defteri or AçıkSilivri?

Not Defteri ships an update every 3 days, and AçıkSilivri monthly. Most recently, Not Defteri was updated on October 12, 2026 and AçıkSilivri on October 24, 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.*