Units vs Units+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Units
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.
- 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)
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Units is a really useful free app that lets you easily convert from various units into lots of others. Units can convert hundreds of units from 43 different categories including Speed, Time, Length, Volume, Area, Power, Temperature, Fuel Consumption, Shoe Sizes and loads more! Units is a fully universal app with native support for iPhones, iPod touches, and iPads. • Convert hundreds of units - Units has over 800 units across 43 different categories. • Convert currency - Units can convert between 88 different currencies, with rates updated daily. • Hide unused units - Units lets you hide units you don't use, allowing you to maintain a streamline conversion workflow. • Reorder both units and unit categories to suit your needs.
Units+
Easily convert between over 260 measurement units across 22 categories and get real-time currency exchange rates for more than 160 currencies. Quickly find units or bookmark frequent conversions for efficient use.
- 260+ measurement units
- 22 unit categories
- 160+ currencies
- Real-time exchange rates
- Unit search
- Bookmarking conversions
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Convert values between commonly used measurement units. The app supports more than 260 units in 22 different categories. It also support currency exchange rates for more than 160 currencies. The app makes it easy to search for units within a specific category, or across all categories. And supports bookmarking the conversions you use most often. Here is a sorted list of all included unit categories: - Acceleration - Angle - Area - Data Storage - Data Transfer - Density - Electric Current - Energy - Flow - Force - Fuel Consumption - Length - Mass (Weight) - Mass Flow - Metric Prefix - Power - Pressure - Speed (Velocity) - Temperature - Time - Torque - Volume
Screenshots
Verdict
The clearest difference is rating: Units+ at 4.8 against Units's 3.6. Units+ also leads on review sentiment (85% vs 60%). Units's advantage is update cadence (monthly vs every 5 months) and iOS requirement (13.5 vs 15.5). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Units sells 3 one-off in-app purchases and Units+ sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Units+ holds the better App Store score, 4.8 against 3.6. Both are backed by a comparable volume of ratings — 150 and 375 respectively. Written reviews point the same way: 60% of Units's written reviews are positive against 85% of Units+'s.
Units ships an update monthly, Units+ every 5 months. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.
| Parameter | Units | Units+ |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (150 ratings) | 4.8 (375 ratings) — better |
| Positive reviews | 60.0% of reviews | 85.0% of reviews — better |
| Number of ratings | 150 | 375 — better |
| Update frequency | Monthly — better | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.5 — better | 15.5 |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Homegrown Software Ltd | Hebaallah Hossameldien |
Customer experience
Units
Units+
User reviews
Units
From 150 App Store ratingsWhat we love
- 🚀 Efficient and fast conversions
- 👍 Comprehensive list of units
- 🔍 Customizable unit selection
- 💰 Free app with optional paid version
- 🔧 Useful for engineering and technical work
Room to improve
- 🐛 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
Units+
From 375 App Store ratingsWhat we love
- 👍 Easy to use
- 👍 Reliable tool
- 👍 Versatile converter
- 👍 Great for various conversions (mass, temps, currency, distances)
- 👍 Does what it needs to do
Room to improve
- 😠 Too many ads
- 😠 Ads without an X to close
- 😠 Negative sentiment towards the app's creator/provider (implied by one review)
- 😐 Fuel economy display issues (mpg/liters to 100)
- 😐 Some discrepancy in currency accuracy noted
Bugs and requests
Units
Reported bugs
4 issues- 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
5 requests- 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
Units+
Reported bugs
1 issue- Ads don't have an X to close
Requested features
2 requests- Add a Notification Center widget
- Way to mark favorite types of conversions
In-app purchases
Units
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$4.99
Units+
- Unlock Pro FeaturesFree
- Remove Ads$1.99
Questions
Is Units free?
Is Units+ free?
Which has better reviews, Units or Units+?
Do Units or Units+ have ads?
Which is updated more often, Units or Units+?
Other comparisons
