Comparison

Convert vs CONVERT UNITS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Convert

Easily convert hundreds of physical units and dimensions with this powerful tool. It also includes a currency converter with daily updated exchange rates for over 130 countries and is available on Apple Watch.

Highlights
  • Unit conversion for 398 units
  • Currency conversion with daily rates
  • Integrated calculator
  • Apple Watch support
  • History charts for currencies
  • Copy & Paste functionality
Features
Read full description

A simple but powerful unit converter. Translates hundreds of physical units and dimensions quickly and easily. The currency converter features daily updated exchange rates for over 130 countries. CUSTOMER REVIEWS: 4½ (over 1000 reviews world wide) *** Apple Watch *** We bring the converter including currency exchange rates to your Apple Watch. Convert units and currencies directly on your watch. TOP FEATURES: ▶ Intuitive and efficient user interface ▶ A total of 398 units in 17 categories ▶ Shoe size conversion ▶ Calculator ▶ Daily updated currency converter ▶ History charts for all currencies ▶ Push notifications for currencies ▶ Univeral iPhone/iPad app ▶ Landscape support for iPad ▶ Copy & Paste ▶ Drag'n Drop your favorites to the toolbar ▶ Frequent free updates CATEGORIES: ▶ Currency ▶ Length ▶ Weight ▶ Temperature ▶ Speed ▶ Energy ▶ Angle ▶ Pressure ▶ Time ▶ Volume ▶ Area ▶ Power ▶ Data ▶ Torque ▶ Radioactivity ▶ Fuel consumption ▶ Force ▶ Shoe size ▶ Calculator Available upgrades with subscriptions: * 'Advanced features': $0.99 per 6 months No ADs, Currency Exchange Rates, Charts - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. Privacy policy: https://www.bitcommander.ch/privacy-policy Terms of use: https://www.bitcommander.ch/terms-of-use-convertit

About

CONVERT UNITS

Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.

Highlights
  • Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currency
  • Automatic currency updates
  • 160 currencies available
  • Multitasking enabled for iPad
  • Alphabetical quick links for units
  • Customizable startup categories
  • Adjustable accuracy and rounding
Features
Read full description

CONVERT UNITS is built for the numbers a general converter treats as an afterthought: torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance. Close to 40 of its 72 categories are scientific and engineering categories, covering 685 units in total, in a fast, no-nonsense dark interface built to do one thing: give you the answer and get out of the way. Two scrolling lists, a big keypad, and a result that updates as you type. 72 CATEGORIES, 685 UNITS Torque, pressure, viscosity, density, thermal conductivity, magnetic flux density, radioactivity, luminance — plus length, weight, temperature, speed, area, volume, time, power, energy, data, fuel economy and dozens more. CURRENCY, CRYPTO AND METALS - 160 world currencies, with rates refreshed daily. - 126 cryptocurrencies. - Gold, silver, platinum and palladium. - Update rates automatically, once a day, on every launch, or only when you ask. BUILT TO BE FAST - An alphabetical index down the side of every list - jump straight to a unit instead of scrolling past hundreds. - Search every unit in every category from a single field. - Launch straight into the category you actually use and skip the home screen entirely. - Hide the categories you never touch, so the grid stays yours. PRECISION ON YOUR TERMS - Trim results by significant figures or by decimal places, whichever the spec calls for. - Significant figures keep small numbers detailed: 0.030333 at 3 figures gives 0.0303. - Decimal places line every result up on the same column: 2 places gives 13.78. - Round results up, or leave them exact. THE DETAILS - 33 languages: English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Chinese (Simplified), Chinese (Traditional), Russian, Arabic, Hindi, Thai, Turkish, Vietnamese, Swedish, Norwegian, Danish, Dutch, Romanian, Ukrainian, Czech, Polish, Croatian, Hungarian, Slovak, Malay, Indonesian, Urdu, Tamil, Telugu, and Bangla. - iPhone and iPad, with a layout built for each, plus Split View so you can convert alongside another app. - Mute the keypad and lock rotation if you prefer. - A dark design with bold, readable figures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units/privacy.html

Screenshots

Convert4 screens
CONVERT UNITS4 screens

Verdict

The call

The clearest difference is in-app purchases: CONVERT UNITS at none against Convert's 2. CONVERT UNITS also leads on ratings volume (1.4K vs 127) and update cadence (every 6 weeks vs every 3 months). Convert's advantage is iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Convert sells 2 in-app purchases, starting at $0.99 per 6 months. CONVERT UNITS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Convert against 4.7 for CONVERT UNITS. That said, the two scores are not equally well evidenced: CONVERT UNITS has 1.4K ratings behind it against 127, so its average is the more settled of the two. Written reviews are what separate them: 70% of Convert's written reviews are positive against 75% of CONVERT UNITS's.

UpkeepUpdate frequency

Convert ships an update every 3 months, CONVERT UNITS every 6 weeks. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
Convert versus CONVERT UNITS: the parameters behind the verdict, then further details
ParameterConvertCONVERT UNITS
PriceFreeFree
Rating4.7 (127 ratings)4.7 (1.4K ratings)
Positive reviews69.8% of reviews75.0% of reviews — better
Number of ratings1271.4K — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFreemiumAd-supported — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size39 MB21 MB
Age rating4++4
DeveloperRaphael OdermattAdysseus

Customer experience

Convert

All ratings127 ratings
Positive94.5%
Neutral0.8%
Negative4.7%
Written reviews43 reviews
Positive69.8%
Neutral2.3%
Negative27.9%

CONVERT UNITS

All ratings1,358 ratings
Positive94.0%
Neutral3.2%
Negative2.7%
Written reviews32 reviews
Positive75.0%
Neutral6.3%
Negative18.8%

Bugs and requests

Convert

Not enough reviews yet to summarise bugs or requests.

CONVERT UNITS

Reported bugs

2 issues
  • App got stuck, required uninstall/reinstall to fix
  • Navigation issues, unable to get back to home page

Requested features

2 requests
  • Option to convert between functions (length to volume)
  • Remember last conversion settings for each category

In-app purchases

2 purchases

Convert

Subscriptions1
  • Advanced Features3 Days trial$0.996 Months
One-time1
  • Advanced Features$1.99
None

CONVERT UNITS

No in-app purchases

Questions

Is Convert free?
Convert is free to download, with in-app purchases available.
Is CONVERT UNITS free?
CONVERT UNITS is free to download, with no in-app purchases.
Which has better reviews, Convert or CONVERT UNITS?
Convert and CONVERT UNITS are both rated 4.7 out of 5 on the App Store, from 127 and 1.4K ratings respectively.
Do Convert or CONVERT UNITS have ads?
Both Convert and CONVERT UNITS show ads.
Which is updated more often, Convert or CONVERT UNITS?
Convert ships an update every 3 months, and CONVERT UNITS every 6 weeks. Most recently, Convert was updated on September 24, 2026 and CONVERT UNITS on September 21, 2026.

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