# TimeCalcX vs US Unit Converter

The clearest difference is in-app purchases: TimeCalcX at none against US Unit Converter's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. US Unit Converter sells 1 one-off in-app purchase. TimeCalcX asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 9, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | TimeCalcX | US Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (109 ratings)](https://appshunter.io/ios/app/us-unit-converter/id1577905442/reviews)** |
| Number of ratings | — | **109** |
| Positive reviews | — | 44.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 6 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Kei Suefuji](https://appshunter.io/developer/1388335881) |

## What reviewers say

### TimeCalcX

[App page](https://appshunter.io/ios/app/timecalcx/id1505984516)

**In-app purchases:** none


### US Unit Converter

[App page](https://appshunter.io/ios/app/us-unit-converter/id1577905442)

Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.

**Highlights:** Length conversion, Weight conversion, Area conversion, Liquid volume conversion, Temperature conversion, Conversion history, Ad-free option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM | $3.99 | one-time |


## Frequently asked questions

### Is TimeCalcX free?

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

### Is US Unit Converter free?

US Unit Converter is free to download, with in-app purchases available.

### Do TimeCalcX or US Unit Converter have ads?

Both TimeCalcX and US Unit Converter show ads.

### Which is updated more often, TimeCalcX or US Unit Converter?

TimeCalcX ships an update every 6 months, and US Unit Converter every 6 months. Most recently, TimeCalcX was updated on October 9, 2026 and US Unit Converter 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.*