# eValveco Assistant vs Okey Defteri

The clearest difference is update cadence: Okey Defteri at every 2 weeks against eValveco Assistant's every 21 months. 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.

eValveco Assistant ships an update every 21 months, Okey Defteri every 2 weeks. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | eValveco Assistant | Okey Defteri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 weeks** |
| Size | 132 MB | 34 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fr. Sauter AG](https://appshunter.io/developer/586916485) | [Mithat Ozgun](https://appshunter.io/developer/1844466233) |

## What reviewers say

### eValveco Assistant

[App page](https://appshunter.io/ios/app/evalveco-assistant/id6446676794)

**In-app purchases:** none


### Okey Defteri

[App page](https://appshunter.io/ios/app/okey-defteri/id6753695900)

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

**In-app purchases:** none


## Frequently asked questions

### Is eValveco Assistant free?

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

### Is Okey Defteri free?

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

### Do eValveco Assistant or Okey Defteri have ads?

Neither eValveco Assistant nor Okey Defteri shows ads.

### Which is updated more often, eValveco Assistant or Okey Defteri?

eValveco Assistant ships an update every 21 months, and Okey Defteri every 2 weeks. Most recently, eValveco Assistant was updated on October 25, 2026 and Okey Defteri on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*