# Converter vs Calculy

The clearest difference is in-app purchases: Converter at none against Calculy's 3. Converter also leads on ratings volume (981 vs 1). Calculy's advantage is update cadence (every 2 weeks vs every 2 months). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Calculy sells 3 one-off in-app purchases. Converter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Converter against 5.0 for Calculy. That said, the two scores are not equally well evidenced: Converter has 981 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 94% of Converter's written reviews are positive against 91% of Calculy's.

Converter ships an update every 2 months, Calculy every 2 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Converter | Calculy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (981 ratings)](https://appshunter.io/ios/app/converter-universal-conversion/id423521445/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculy/id1605142327/reviews)** |
| Number of ratings | **981** | 1 |
| Positive reviews | **93.9% of reviews** | 91.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 37 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Lingo4you Mario Muller und Heike Pahlow GbR](https://appshunter.io/developer/395530887) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-universal-conversion/id423521445)

This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

**Highlights:** Currency converter with live exchange rates, Over 300 engineering and scientific units, Specialized hardness converter, Timezone conversion, Running pace calculator, Integrated standard calculator, Conversion history log

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate and fast conversions
- 💡 Comprehensive coverage of units and categories
- 🔒 No ads or hidden fees
- 💡 Useful currency converter

**What reviewers complain about**

- 🐛 Currency conversion rates can be outdated
- 🔍 Difficult to find specific conversions due to large number of options
- 💡 Lack of ability to set favorite conversions as default

**Reported bugs**

- Occasional crashes on startup for non-English/German users
- Conversion from meters to feet does not show inches

**Requested features**

- Add fuel efficiency conversions
- Allow users to set favorite conversions as default
- Improve currency conversion rate updates


### Calculy

[App page](https://appshunter.io/ios/app/calculy/id1605142327)

This free calculator app offers advanced functions beyond basic arithmetic, including a comprehensive unit converter with daily updated currency rates. It supports a wide range of mathematical operations and is available for iPhone and iPad.

**Highlights:** Advanced mathematical functions, Unit converter with 220+ units, Daily updated currency rates, Supports iPad expanded layout, Hardware keyboard support on iPad, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |
| Buy me cookies | $1.99 | one-time |
| Buy me a pizza | $3.99 | one-time |


## Frequently asked questions

### Is Converter free?

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

### Is Calculy free?

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

### Which has better reviews, Converter or Calculy?

Calculy is rated higher. Converter averages 4.9 out of 5 from 981 ratings, while Calculy averages 5.0 from 1 ratings.

### Do Converter or Calculy have ads?

Neither Converter nor Calculy shows ads.

### Which is updated more often, Converter or Calculy?

Converter ships an update every 2 months, and Calculy every 2 weeks. Most recently, Converter was updated on November 6, 2026 and Calculy on November 3, 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.*