# Duoza vs ENGRAI

The clearest difference is update cadence: ENGRAI at every 2 days against Duoza's fortnightly. Duoza's advantage is iOS requirement (17.0 vs 26.0). 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.

Duoza ships an update fortnightly, ENGRAI every 2 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Duoza | ENGRAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 7 MB | 64 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [耀 何](https://appshunter.io/developer/1896515984) | [Vedant Desai](https://appshunter.io/developer/6781901234) |

## What reviewers say

### Duoza

[App page](https://appshunter.io/ios/app/duoza/id6771247273)

**Features:** macOS Compatibility

**In-app purchases:** none


### ENGRAI

[App page](https://appshunter.io/ios/app/engrai/id6784815034)

**In-app purchases:** none


## Frequently asked questions

### Is Duoza free?

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

### Is ENGRAI free?

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

### Do Duoza or ENGRAI have ads?

Neither Duoza nor ENGRAI shows ads.

### Which is updated more often, Duoza or ENGRAI?

Duoza ships an update fortnightly, and ENGRAI every 2 days. Most recently, Duoza was updated on October 5, 2026 and ENGRAI on October 7, 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.*