# CONVERT UNITS vs acQuire Arena 5.5

The clearest difference is in-app purchases: acQuire Arena 5.5 at none against CONVERT UNITS's 2. acQuire Arena 5.5 also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). CONVERT UNITS's advantage is update cadence (weekly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. CONVERT UNITS sells 2 in-app purchases, starting at $0.99 per month. acQuire Arena 5.5 asks for nothing beyond the download.

CONVERT UNITS ships an update weekly, acQuire Arena 5.5 every 2 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | CONVERT UNITS | acQuire Arena 5.5 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.4K ratings)](https://appshunter.io/ios/app/convert-units/id1114969241/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 75.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 65 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [ACQUIRE TECHNOLOGY SOLUTIONS PTY LTD](https://appshunter.io/developer/1348201049) |

## What reviewers say

### CONVERT UNITS

[App page](https://appshunter.io/ios/app/convert-units/id1114969241)

This app offers extensive unit and currency conversion capabilities, including offline access for saved rates. It features a user-friendly interface with customizable options and supports a wide range of categories for everyday and specialized needs.

**Highlights:** Offline conversion for saved rates, 160 currencies and 126 cryptocurrencies, 685 units across 72 categories, Customizable themes (Premium), Split View support for iPad, Dark and light appearance support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | per month |
| Remove ads | $19.99 | one-time |

**What reviewers like**

- 👍 Quick & easy to use
- 👍 Ease of use
- 👍 Simple and easy to use
- 👍 Well thought out and easy to use
- 👍 Excellent and very reliable

**What reviewers complain about**

- 🐛 Ads obstruct use
- 🐛 Subscription required to remove ads
- 🐛 Currency conversion not working

**Reported bugs**

- App got stuck, required uninstall/reinstall to fix
- Navigation issues, unable to get back to home page

**Requested features**

- Option to convert between functions (length to volume)
- Remember last conversion settings for each category


### acQuire Arena 5.5

[App page](https://appshunter.io/ios/app/acquire-arena-55/id6743523881)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CONVERT UNITS free?

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

### Is acQuire Arena 5.5 free?

acQuire Arena 5.5 is free to download, with no in-app purchases.

### Do CONVERT UNITS or acQuire Arena 5.5 have ads?

CONVERT UNITS shows ads; acQuire Arena 5.5 does not.

### Which is updated more often, CONVERT UNITS or acQuire Arena 5.5?

CONVERT UNITS ships an update weekly, and acQuire Arena 5.5 every 2 months. Most recently, CONVERT UNITS was updated on November 11, 2026 and acQuire Arena 5.5 on November 8, 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.*