# Optimus FTA vs Kaynac

The clearest difference is in-app purchases: Optimus FTA at none against Kaynac's 6. Optimus FTA also leads on iOS requirement (11.0 vs 15.0). Kaynac's advantage is update cadence (every 3 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Kaynac sells 6 one-off in-app purchases. Optimus FTA asks for nothing beyond the download.

Optimus FTA ships an update every 3 months, Kaynac every 3 days. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Optimus FTA | Kaynac |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 32 MB | 32 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jiangsu Skytech Zumoo Co.,Limited](https://appshunter.io/developer/1681700583) | [Kaynac](https://appshunter.io/developer/1809944584) |

## What reviewers say

### Optimus FTA

[App page](https://appshunter.io/ios/app/optimus-fta/id6447542304)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kaynac

[App page](https://appshunter.io/ios/app/kaynac/id6744920297)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Kaynac Credits | $12.99 | one-time |
| 25 Credits | $32.99 | one-time |
| 50 Credits | $64.99 | one-time |
| 100 Kaynac Credits | $129.99 | one-time |
| 250 Credits | $324.99 | one-time |
| 500 Kaynac Credits | $649.99 | one-time |


## Frequently asked questions

### Is Optimus FTA free?

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

### Is Kaynac free?

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

### Do Optimus FTA or Kaynac have ads?

Neither Optimus FTA nor Kaynac shows ads.

### Which is updated more often, Optimus FTA or Kaynac?

Optimus FTA ships an update every 3 months, and Kaynac every 3 days. Most recently, Optimus FTA was updated on October 25, 2026 and Kaynac on October 30, 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.*