# Uniter: Smart Unit Conversion — Convert Metric & US Imperial

> Smart unit conversion tool for text, web, and camera input. (iPhone/iPad app by Arkadiusz Holko.)

- Source: https://appshunter.io/ios/app/uniter-smart-unit-conversion/id1589272507 (this page in markdown: same URL + `.md`)
- Developer: [Arkadiusz Holko](https://appshunter.io/developer/683846458)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.70/5 from 73 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 10 MB
- Languages: American English
- Released: 2021-12-15
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/uniter-smart-unit-conversion/id1589272507/reviews.md

## What is Uniter?

Uniter lets you quickly convert units of measure in text, on websites in Safari, and live on the camera view.

“Uniter might well be the best iPhone app for converting units we've seen yet” – iMore
“(...) what called my attention with Uniter is this automatic conversion for units of measurement” – 9to5Mac

▶ AUTOMATIC CONVERSION FOR UNITS OF MEASUREMENT
Get units you encounter automatically converted into your preferred unit system (Metric, Imperial or U.K.). Uniter intelligently picks the most readable, fitting unit for you.

▶ SIDE BY SIDE LIVE CONVERTER
Type in text with units of measure and immediately see conversions displayed next to your input.

▶ FILE IMPORT
Convert units by importing text from documents (TXT, RTF, DOC, DOCX) and PDF files. 

▶ CAMERA SCAN*
Point your camera at any text or label and see converted text live (requires a device with the Neural Engine).

▶ SAFARI EXTENSION*
Convert units on any website using our “Convert Units via Uniter” extension for Safari.

▶ TEXT EXTENSION
Share any text with “Convert Units via Uniter” to see it converted. No need to open the app!

▶ LOTS OF SUPPORTED UNITS
Convert hundreds of supported unit types for: length, area, capacity (volume), mass, temperature, speed, fuel efficiency, torque, pressure, angle, duration, frequency, energy, power, concentration of mass, electric charge, electric current, electric potential, electric resistance and information storage.

▶ IPAD OPTIMIZED
Leverage iPad’s large screen thanks to the optimized iPad look and feel.

*Requires Uniter Pro.

UNITER PRO:
- Removes 500 character limit.
- Adds scanning text from camera and photos.
- Adds unit converter for Safari.

Privacy Policy: https://uniterapp.com/privacypolicy/
Terms of Use: https://uniterapp.com/terms/

## Key features

- Automatic unit conversion
- Live side-by-side converter
- File import for conversion
- Camera text scanning
- Safari extension
- Extensive unit support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Uniter Pro (Annual) | $14.99 | per year |
| Uniter Pro (Monthly) | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Uniter Pro (Lifetime) | $39.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/uniter-smart-unit-conversion/id1589272507/reviews.md

### 4/5 — 3 years ago

*2025-10-03*

Last update was three years ago.  Honestly, I don’t know the reason why simple updates like dark mode on the app icon are not here yet, Small  updates let us know that the app is not abandoned.   Otherwise, the app is great. Let us know you’re still alive.

### 4/5 — Missing unit

*2025-08-17*

Would've given it five stars but it doesn't do grains.

### 3/5 — App is great and handy but..can you increase decimal points?

*2023-10-04*

The app is super helpful but in my line of work, I require more precision on weights and lengths. Is it possible to give user the ability to increase or decrease decimal points?

For example, kg’s to lbs conversion is 2.2 in the app. However, full number is 2.204624402. Thoughts by the developer?

### 5/5 — Handy and powerful

*2022-01-30*

Love this app! It brings and make your life so ease however would wish to see if you can add conversations for currencies in near future updates. Like changing one currency in another currency exchange rates

### 5/5 — Great and Functional !!!

*2022-01-20*

The idea and execution is Great. Very useful and needed for unit conversation.

### 1/5 — ?

*2022-01-07*

Just typed 50 psi to see what it will translate to in metric units; Pa, bar or something else. Translation was 50 psi. Really?

**Developer response:** I'm sorry for the issue. It should be fixed in the newest update (Uniter 1.0.6). You'll see an automatic conversion to Pascals for metric units (or hectopascals, kilopascals, megapascals, gigapascals – whatever makes most sense).

You can also type: 50 psi to bars, or 50 psi to Pa to easily pick the target unit. Thank you for reporting the issue and I hope it'll work better for you now.

Thanks, Arek

## Frequently asked questions about Uniter

### What is Uniter?

Uniter is a smart unit conversion application that allows users to convert units of measure directly within text, on websites via a Safari extension, and live through the camera view. It automatically detects and converts units to your preferred system, supporting hundreds of unit types.

### How does Uniter's automatic conversion work?

Uniter intelligently identifies units of measurement within text or other inputs and automatically converts them to your selected preferred unit system (Metric, Imperial, or U.K.). It aims to provide the most readable and fitting unit for your needs.

### What are the features of Uniter Pro?

Uniter Pro removes the 500-character limit for conversions, adds the ability to scan text from the camera and photos, and enables the unit converter for Safari. These advanced features enhance the app's utility for more complex conversion needs.

### Does Uniter have ads?

No, Uniter does not contain advertisements. As a free app with optional in-app purchases for Uniter Pro, it provides an ad-free experience for all users.

### What units can Uniter convert?

Uniter supports hundreds of unit types across various categories including length, area, capacity, mass, temperature, speed, fuel efficiency, pressure, angle, duration, and many more. It also covers electrical units and information storage.

### What devices is Uniter compatible with?

Uniter is optimized for Apple devices, including iPhone, iPad, and iPod. The app features an iPad-optimized interface to leverage the larger screen size effectively.

### How often is Uniter updated?

The latest version of Uniter is 1.3, which was last updated on June 16, 2022. While specific update frequency isn't detailed, this indicates recent development and support for the application.

### What are the subscription options for Uniter Pro?

Uniter Pro is available through two subscription plans: a monthly plan for $3.99 and an annual plan for $14.99. The annual plan includes a 7-day free trial, allowing users to test the premium features before committing.

## Version history (last 5 releases)

### 1.3 — 2022-06-16

Camera converter has been merged with the Text tab. Now you can quickly scan text and then adjust it as needed.

### 1.2.3 — 2022-02-05

Bug fixes and performance improvements.

### 1.2.2 — 2022-02-01

Bug fixes and performance improvements.

### 1.2.1 — 2022-01-30

- Improved performance on Number tab.
- Improved support for Dynamic Type (font size different than the default) across the app.
- Improved the onboarding experience.

### 1.2 — 2022-01-26

- Added new tab: Number. Convert units quickly in a calculator-like interface showing multiple conversions at the same time.

If you have any questions or suggestions, you can reach us at uniter@uniterapp.com

## Apps similar to Uniter

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| --- | --- | --- | --- |
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## More apps by Arkadiusz Holko

- [Outread: Speed Reading](https://appshunter.io/ios/app/outread-speed-reading/id778846279)
- [Foteka: Camera Cleaner](https://appshunter.io/ios/app/foteka-camera-cleaner/id6744609319)

All apps by Arkadiusz Holko: https://appshunter.io/developer/683846458

## Related topics

[unit conversion for safari](https://appshunter.io/ios/topics/unit-conversion-for-safari) · [metric converting](https://appshunter.io/ios/topics/metric-converting) · [metric conversion unit](https://appshunter.io/ios/topics/metric-conversion-unit) · [smart unit converter plus](https://appshunter.io/ios/topics/smart-unit-converter-plus) · [wattage conversion](https://appshunter.io/ios/topics/wattage-conversion)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*