Comparison

CONVERT UNITS vs Units

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

Head to head
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

About

Units

Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.

Highlights
  • 57 conversion categories
  • Built-in calculators (currency, finance, health)
  • Size lookup tables
  • Offline functionality
  • Conversion history
  • Favorites
  • Multi-language support
Features
Read full description

Convert any unit, instantly. Units - Conversion Calculator is a fast, intuitive, and beautifully designed conversion tool with 57 categories covering everything you need from everyday measurements to specialized engineering and scientific units. What you can convert: ▸ Length, Mass, Temperature, Speed, Time, Area, Volume, Pressure, Energy, Power, Force, and many more ▸ Data Storage, Data Transfer, Frequency, Fuel Economy ▸ Cooking units, Numeral Systems, Color Codes, Typography ▸ AWG Wire Gauge, Torque, Luminance, Sound Level Built-in Calculators: ▸ Currency Converter with live exchange rates ▸ Date Calculator — days between dates, add/subtract time ▸ BMI, Body Fat, Calorie Calculator ▸ Tip Calculator, Discount & Tax, Loan & Mortgage ▸ Percentage, Aspect Ratio, Ohm's Law, Power-Voltage-Current ▸ Hex/RGB/HSL Color Converter ▸ Roman Numerals, Fuel Cost, Speed-Distance-Time Size Lookup Tables: ▸ Shoes (Men & Women), Tops, Pants, Ring Sizes ▸ Children's Clothing (Boys & Girls) ▸ Bra Sizes, Screw & Bolt Sizes Why you'll love it: ◆ 100% offline — no internet required (except live currency rates) ◆ Conversion history — never lose a result ◆ Favorites — quick access to the categories you use most ◆ 7 languages — English, Deutsch, Español, Français, Italiano, Português, Nederlands ◆ Dark theme — easy on the eyes ◆ No ads. No tracking. No account needed. ◆ All your data stays on your device. Whether you're a student, engineer, chef, traveler, or just need a quick conversion — Units - Conversion Calculator has you covered. Privacy Policy: https://www.notion.so/Units-Conversion-Calculator-32dd964a6f0c80a9a391e07642fba0f9?source=copy_link

Screenshots

CONVERT UNITS4 screens
Units3 screens

Verdict

The call

The clearest difference is in-app purchases: Units at none against CONVERT UNITS's 2. Units also leads on ads (none vs shown) and rating (4.9 vs 4.7). CONVERT UNITS's advantage is ratings volume (1.4K vs 9). On price, device support and iOS requirement 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 UNITS sells 2 in-app purchases, starting at $0.99 per month. Units asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Units holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: CONVERT UNITS has 1.4K ratings behind it against 9, so its average is the more settled of the two.

Scorecard5 real differences · 5 level
CONVERT UNITS versus Units: the parameters behind the verdict, then further details
ParameterCONVERT UNITSUnits
PriceFreeFree
Rating4.7 (1.4K ratings)4.9 (9 ratings) — better
Positive reviews75.0% of reviews—
Number of ratings1.4K — better9
Update frequencyEvery 10 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size22 MB33 MB
Age rating4+4+
DeveloperAdysseusMatys Bouziane

Customer experience

CONVERT UNITS

All ratings1,369 ratings
Positive94.0%
Neutral3.2%
Negative2.8%
Written reviews32 reviews
Positive75.0%
Neutral6.3%
Negative18.8%

Units

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and 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

Units

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

CONVERT UNITS

Subscriptions1
  • Remove ads$0.991 Month
One-time1
  • Remove ads$19.99
None

Units

No in-app purchases

Questions

Is CONVERT UNITS free?
CONVERT UNITS is free to download, with in-app purchases available.
Is Units free?
Units is free to download, with no in-app purchases.
Which has better reviews, CONVERT UNITS or Units?
Units is rated higher. CONVERT UNITS averages 4.7 out of 5 from 1.4K ratings, while Units averages 4.9 from 9 ratings.
Do CONVERT UNITS or Units have ads?
CONVERT UNITS shows ads; Units does not.

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