# Units vs ConcReoEst

The clearest difference is in-app purchases: ConcReoEst at none against Units's 3. ConcReoEst also leads on update cadence (weekly vs every 5 weeks). Units's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Units sells 3 in-app purchases, starting at $0.99 per month. ConcReoEst asks for nothing beyond the download.

Units ships an update every 5 weeks, ConcReoEst weekly. Both last shipped on October 27, 2026.

## The numbers

| Metric | Units | ConcReoEst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (262 ratings)](https://appshunter.io/ios/app/units-unit-converter/id1527329982/reviews)** | — |
| Number of ratings | **262** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 2 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Maier](https://appshunter.io/developer/454364359) | [CRAIG M SINCLAIR](https://appshunter.io/developer/1698818959) |

## What reviewers say

### Units

[App page](https://appshunter.io/ios/app/units-unit-converter/id1527329982)

Easily convert between a wide range of measurement units and currencies. Features a clear and simple interface for quick conversions of length, mass, volume, speed, and more. Supports popular currencies and common units for everyday use.

**Highlights:** Extensive unit conversions, Multiple currency support, Easy and clear handling, Converts length, mass, volume, Supports speed, area, pressure, Converts time and temperature

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $4.99 | per year |
| One time purchase | $9.99 | one-time |


### ConcReoEst

[App page](https://appshunter.io/ios/app/concreoest/id6670197959)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Units free?

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

### Is ConcReoEst free?

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

### Do Units or ConcReoEst have ads?

Neither Units nor ConcReoEst shows ads.

### Which is updated more often, Units or ConcReoEst?

Units ships an update every 5 weeks, and ConcReoEst weekly. Most recently, Units was updated on October 27, 2026 and ConcReoEst on October 27, 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.*