# UnitsConv vs Unit Conversion Calculator $

The clearest difference is ads: UnitsConv at none against Unit Conversion Calculator $'s shown. UnitsConv also leads on update cadence (every 4 months 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.

UnitsConv ships an update every 4 months, Unit Conversion Calculator $ every 9 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | UnitsConv | Unit Conversion Calculator $ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/unitsconv/id1291109803/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free | — |
| Size | 8 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [john selverian](https://appshunter.io/developer/1291109802) | [JanoGroup LLC](https://appshunter.io/developer/1781461557) |

## What reviewers say

### UnitsConv

[App page](https://appshunter.io/ios/app/unitsconv/id1291109803)

This app provides conversion factors for 28 common properties used in multiphysics simulations and finite element analysis. It's a free tool designed for engineers and researchers working with complex physical models.

**Highlights:** 28 conversion properties, Multiphysics simulation support, Finite element analysis (FEA) focus, Free to use, Supports iPhone, iPad, and iPod

**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 UnitsConv free?

UnitsConv 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 UnitsConv or Unit Conversion Calculator $ have ads?

Unit Conversion Calculator $ shows ads; UnitsConv does not.

### Which is updated more often, UnitsConv or Unit Conversion Calculator $?

UnitsConv ships an update every 4 months, and Unit Conversion Calculator $ every 9 months. Most recently, UnitsConv was updated on October 14, 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.*