# Unit Ⅽonverter vs Well Testing Suite

The clearest difference is in-app purchases: Well Testing Suite at none against Unit Ⅽonverter's 2. Well Testing Suite also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Unit Ⅽonverter sells 2 in-app purchases, starting at $1.99 per month. Well Testing Suite asks for nothing beyond the download.

Unit Ⅽonverter ships an update every 3 weeks, Well Testing Suite every 5 days. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Unit Ⅽonverter | Well Testing Suite |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 5 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polymath Company Limited](https://appshunter.io/developer/1072350394) | [H2Oil Limited](https://appshunter.io/developer/1894026719) |

## What reviewers say

### Unit Ⅽonverter

[App page](https://appshunter.io/ios/app/unit-onverter/id1499479393)

Easily convert between over 1600 units of measurement across 75 categories, including custom units and complex calculations. Supports offline mode and offers a convenient history of your conversions.

**Highlights:** Convert over 1600 units in 75 categories, Supports custom units and combinations, Calculator for expression input, View conversion histories, Add favorite units, Offline mode, Copy and share results

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitConverterPremiumMonthly | $1.99 | per month |
| UnitConverterPremiumLifeTime | $33.99 | one-time |


### Well Testing Suite

[App page](https://appshunter.io/ios/app/well-testing-suite/id6762389820)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Ⅽonverter free?

Unit Ⅽonverter is free to download, with in-app purchases available.

### Is Well Testing Suite free?

Well Testing Suite is free to download, with no in-app purchases.

### Do Unit Ⅽonverter or Well Testing Suite have ads?

Unit Ⅽonverter shows ads; Well Testing Suite does not.

### Which is updated more often, Unit Ⅽonverter or Well Testing Suite?

Unit Ⅽonverter ships an update every 3 weeks, and Well Testing Suite every 5 days. Most recently, Unit Ⅽonverter was updated on October 12, 2026 and Well Testing Suite on October 18, 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.*