# Units and Metrics vs Unit Conversion Calculator $

The clearest difference is ads: Units and Metrics at none against Unit Conversion Calculator $'s shown. Units and Metrics also leads on update cadence (every 2 weeks vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Units and Metrics ships an update every 2 weeks, Unit Conversion Calculator $ every 9 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Units and Metrics | Unit Conversion Calculator $ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 20 MB | 28 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reno Softwares](https://appshunter.io/developer/1778003915) | [JanoGroup LLC](https://appshunter.io/developer/1781461557) |

## What reviewers say

### Units and Metrics

[App page](https://appshunter.io/ios/app/units-and-metrics/id6737802252)

This app provides instant unit conversions across a wide range of categories, including everyday measurements and specialized fields. It features an offline mode, the ability to save favorite conversions, and a customizable interface with light and dark themes. Users can also manage their conversion history.

**Highlights:** Real-time conversions, Offline mode, Save favorite conversions, Customizable themes, Conversion history management, Comprehensive categories

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Conversion Calculator $

[App page](https://appshunter.io/ios/app/unit-conversion-calculator/id6742060456)

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

**In-app purchases:** none


## Frequently asked questions

### Is Units and Metrics free?

Units and Metrics is free to download, with no in-app purchases.

### Is Unit Conversion Calculator $ free?

Unit Conversion Calculator $ is free to download, with no in-app purchases.

### Do Units and Metrics or Unit Conversion Calculator $ have ads?

Unit Conversion Calculator $ shows ads; Units and Metrics does not.

### Which is updated more often, Units and Metrics or Unit Conversion Calculator $?

Units and Metrics ships an update every 2 weeks, and Unit Conversion Calculator $ every 9 months. Most recently, Units and Metrics was updated on October 2, 2026 and Unit Conversion Calculator $ on October 12, 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.*