# Units vs Outright GPS

The clearest difference is in-app purchases: Outright GPS at none against Units's 3. Outright GPS also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Units sells 3 one-off in-app purchases. Outright GPS asks for nothing beyond the download.

Units ships an update monthly, Outright GPS fortnightly. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Units | Outright GPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (163 ratings)](https://appshunter.io/ios/app/units-pro-unit-converter/id284574017/reviews)** | — |
| Number of ratings | **163** | — |
| Positive reviews | 60.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 86 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Homegrown Software Ltd](https://appshunter.io/developer/406645730) | [Outright Hosting Limited](https://appshunter.io/developer/1621541280) |

## What reviewers say

### Units

[App page](https://appshunter.io/ios/app/units-pro-unit-converter/id284574017)

Easily convert between hundreds of units across 43 categories, including currency with daily updated rates. Customize your workflow by hiding or reordering units and categories.

**Highlights:** Hundreds of units across 43 categories, Daily updated currency exchange rates, Hide unused units, Reorder units and categories, Universal app support (iPhone, iPod touch, iPad)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |

**What reviewers like**

- 🚀 Efficient and fast conversions
- 👍 Comprehensive list of units
- 🔍 Customizable unit selection
- 💰 Free app with optional paid version
- 🔧 Useful for engineering and technical work

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🕰️ Outdated currency conversion rates
- 🔍 Too many unit categories, hard to navigate
- 💰 Ads in free version
- 📏 Ruler feature not accurate on some devices

**Reported bugs**

- Crashes when clearing input fields
- Numerical keypad covers conversion results
- Incompatibility issues with newer iOS versions
- Ruler measurements not accurate on all devices

**Requested features**

- Add nautical units (miles, knots)
- Improve currency conversion accuracy and updates
- Allow customization of visible unit categories
- Add more clothing/shoe size conversions
- Improve user interface and search functionality


### Outright GPS

[App page](https://appshunter.io/ios/app/outright-gps/id6759489472)

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

**In-app purchases:** none


## Frequently asked questions

### Is Units free?

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

### Is Outright GPS free?

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

### Do Units or Outright GPS have ads?

Units shows ads; Outright GPS does not.

### Which is updated more often, Units or Outright GPS?

Units ships an update monthly, and Outright GPS fortnightly. Most recently, Units was updated on November 10, 2026 and Outright GPS on October 31, 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.*