# KOVIET vs Griffin Reader Pro

The clearest difference is update cadence: Griffin Reader Pro at every 2 days against KOVIET's every 4 weeks. 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.

KOVIET ships an update every 4 weeks, Griffin Reader Pro every 2 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KOVIET | Griffin Reader Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.2 (6 ratings)](https://appshunter.io/ios/app/koviet/id6740426061/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 70 MB | 93 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHENZHEN HUIYI TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1789911662) | [骏 杨](https://appshunter.io/developer/1513725819) |

## What reviewers say

### KOVIET

[App page](https://appshunter.io/ios/app/koviet/id6740426061)

This app serves as the control software for a specific device, enabling users to manage its functions. It requires email registration and login, connecting to the device via Bluetooth and WiFi for full operational control.

**Highlights:** Device control software, Email registration and login, Bluetooth connectivity, WiFi connectivity, Full functionality access

**Features:** macOS Compatibility

**In-app purchases:** none


### Griffin Reader Pro

[App page](https://appshunter.io/ios/app/griffin-reader-pro/id6745780058)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KOVIET free?

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

### Is Griffin Reader Pro free?

Griffin Reader Pro is free to download, with no in-app purchases.

### Do KOVIET or Griffin Reader Pro have ads?

Neither KOVIET nor Griffin Reader Pro shows ads.

### Which is updated more often, KOVIET or Griffin Reader Pro?

KOVIET ships an update every 4 weeks, and Griffin Reader Pro every 2 days. Most recently, KOVIET was updated on October 16, 2026 and Griffin Reader Pro on October 7, 2026.

---

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