# Opera vs All Unit Conversion

The clearest difference is review sentiment: Opera at 100% against All Unit Conversion's 50%. Opera also leads on update cadence (every 9 days vs every 2 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Opera ships an update every 9 days, All Unit Conversion every 2 months. Both last shipped on October 17, 2026.

## The numbers

| Metric | Opera | All Unit Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (17 ratings)](https://appshunter.io/ios/app/all-unit-conversion/id1418597453/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Free | Free |
| Size | 21 MB | 22 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Opera Srl](https://appshunter.io/developer/1297836359) | [Tiago Do Couto](https://appshunter.io/developer/1291604717) |

## What reviewers say

### Opera

[App page](https://appshunter.io/ios/app/opera-57401/id1297836360)

This app provides convenient, app-based Bluetooth control for doors, eliminating the need for traditional PC-based access systems. It offers a user-friendly interface for straightforward user management and system configuration.

**Highlights:** App-based Bluetooth door control, User-friendly interface, Straightforward user management, No computer software required, Intuitive system configuration

**Features:** macOS Compatibility

**In-app purchases:** none


### All Unit Conversion

[App page](https://appshunter.io/ios/app/all-unit-conversion/id1418597453)

Easily convert between various units of measurement with this free utility app. It supports conversions for length, area, volume, mass, time, digital storage, energy, and currency.

**Highlights:** Length conversion, Area conversion, Volume conversion, Mass conversion, Time conversion, Currency conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Opera free?

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

### Is All Unit Conversion free?

All Unit Conversion is free to download, with no in-app purchases.

### Do Opera or All Unit Conversion have ads?

Neither Opera nor All Unit Conversion shows ads.

### Which is updated more often, Opera or All Unit Conversion?

Opera ships an update every 9 days, and All Unit Conversion every 2 months. Most recently, Opera was updated on October 17, 2026 and All Unit Conversion on October 17, 2026.

---

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