# Ångström, the unit converter vs Unit Convert Master

The clearest difference is in-app purchases: Unit Convert Master at none against Ångström, the unit converter's 1. Unit Convert Master also leads on rating (5.0 vs 4.8). Ångström, the unit converter's advantage is ads (none vs shown) and ratings volume (31 vs 2). On price and update cadence there is nothing between them.

Both are free to download. Ångström, the unit converter sells 1 one-off in-app purchase. Unit Convert Master asks for nothing beyond the download.

Unit Convert Master holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Ångström, the unit converter has 31 ratings behind it against 2, so its average is the more settled of the two.

Ångström, the unit converter ships an update every 3 months, Unit Convert Master every 4 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ångström, the unit converter | Unit Convert Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (31 ratings)](https://appshunter.io/ios/app/angstrom-the-unit-converter/id783839219/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/unit-convert-master/id6743671551/reviews)** |
| Number of ratings | **31** | 2 |
| Positive reviews | 84.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 22 MB | 4 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Babaev](https://appshunter.io/developer/783839222) | [Mizuki Hoshida](https://appshunter.io/developer/1797942917) |

## What reviewers say

### Ångström, the unit converter

[App page](https://appshunter.io/ios/app/angstrom-the-unit-converter/id783839219)

Effortlessly convert units, currencies, and timezones with a fast, intuitive interface. Simply type a number and a few letters to get instant results, with smart suggestions and offline currency rates. Unlock additional features like timezone conversion through an in-app purchase.

**Highlights:** Instant conversion as you type, Dedicated numpad, Smart unit suggestions, Offline currency rates, Learns user conversion habits, Supports alternative unit spellings

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full unit pack | $1.99 | one-time |

**What reviewers like**

- 👍 Highly easy to use
- 🚀 Fast and efficient conversions
- 💡 Intuitive and clever design
- ✨ Beautiful and pleasant interface
- 🌟 The one ultimate converter needed

**What reviewers complain about**

- 🐛 Apple Watch app is dictation only
- 🐛 UI is beautiful but most units require payment
- 🐛 Lacks UK imperial measurements (pounds and ounces)
- 🐛 App name is hard to find
- 🐛 Incompatible with older devices (implied by older reviews)

**Reported bugs**

- Additional keyboard and unit selection are broken with iOS update
- App crashes after launch
- App asks to sign into iTunes account
- Conversions are wrong (e.g., 1 cup = 250ml)
- Apple Watch app is dictation only

**Requested features**

- Add grain (граны) as a unit of measurement
- Add UK imperial measurements (pounds and ounces)
- Add Kazakhstani Tenge typographic symbol (₸)
- Add time conversion from am/pm to 24-hour format
- Improve built-in keyboard and unit selection


### Unit Convert Master

[App page](https://appshunter.io/ios/app/unit-convert-master/id6743671551)

Easily convert between over 100 measurement units across 15 categories. This app offers a user-friendly interface, offline functionality, and a history of your conversions for quick access. Ideal for students, professionals, and everyday users needing precise calculations.

**Highlights:** 15+ conversion categories, 100+ measurement units, Intuitive interface with themes, Custom keyboard for input, Conversion history with search, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Ångström, the unit converter free?

Ångström, the unit converter is free to download, with in-app purchases available.

### Is Unit Convert Master free?

Unit Convert Master is free to download, with no in-app purchases.

### Which has better reviews, Ångström, the unit converter or Unit Convert Master?

Unit Convert Master is rated higher. Ångström, the unit converter averages 4.8 out of 5 from 31 ratings, while Unit Convert Master averages 5.0 from 2 ratings.

### Do Ångström, the unit converter or Unit Convert Master have ads?

Unit Convert Master shows ads; Ångström, the unit converter does not.

### Which is updated more often, Ångström, the unit converter or Unit Convert Master?

Ångström, the unit converter ships an update every 3 months, and Unit Convert Master every 4 months. Most recently, Ångström, the unit converter was updated on October 23, 2026 and Unit Convert Master on October 24, 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.*