Comparison

Conversion vs Converter

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

Head to head
About

Conversion

This utility app provides instant conversions between a wide range of units, including metric, imperial, and currency. It features live exchange rates and supports 33 languages, all within a clean, clutter-free interface.

Highlights
  • Extensive unit categories (12 categories, 96 units)
  • Live, offline-capable currency exchange rates
  • Supports 33 languages and regional number formats
  • Modern, clutter-free interface with fluid animations
  • Full VoiceOver and accessibility support
  • No ads, analytics, or tracking
Features
Read full description

Type a number. Read the answer. That is the entire app. Conversion has been on the App Store since 2012. Version 4 is a complete rebuild — modern, quick, and still refreshingly free of clutter. BOTH UNITS, ALWAYS IN VIEW The two units face each other in the middle of the screen, right where you left them last time. Flick either one to change it, or tap an amount to turn the conversion around. Nothing to drill into. TWELVE CATEGORIES, 96 UNITS Length · Area · Volume · Weight · Temperature · Speed · Pressure · Power · Energy · Time · Computing — and Currency, with more than 160 world currencies. LIVE EXCHANGE RATES Rates refresh on their own and are stored on your device, so conversions still work on a plane or underground. When a rate is out of date the app says so, rather than quietly handing you an old number. YOUR LANGUAGE, YOUR NUMBERS 33 languages. Unit names, decimal separators and numbering systems all follow your region — so a comma lands where a comma belongs, and Arabic and Devanagari numerals are drawn properly. BUILT FOR iOS 26 Liquid Glass, a color for every category, fluid animation, haptics, and Dark Mode throughout. ACCESSIBLE FROM THE START Every control is labeled for VoiceOver. Text scales to the largest accessibility sizes. Reduce Motion is respected. A hardware keyboard drives the whole app. NOTHING COLLECTED No account, no ads, no analytics, no tracking. The app makes one kind of network request — for published exchange rates — and it carries nothing about you. Pay once. No subscription.

About

Converter

Easily convert between US customary and metric units for weight, length, volume, and temperature. The app features a simple interface with no learning curve and automatically saves your conversion history for quick review.

Highlights
  • Weight conversion (Lb-Kg, Oz-G)
  • Length conversion (Cm-Inch, Mi-Km)
  • Volume conversion (Fl Oz-Ml, Cups-L)
  • Temperature conversion (F-C)
  • Automatic conversion history
  • Zero learning curve interface
Features
Read full description

Convert units fast across length, volume, weight, and temperature. Simple by default Enter a value and convert instantly in either direction. Custom converter Build your own converter by choosing any two units within the same category. Conversion history Your recent conversions are saved automatically and can be cleared anytime. Entity Explorer Compare values with real-world entities, save favorites to My entities, and add your own. Supported units • Length: Inch, Cm, Foot, Meter, Yard, Mile, Km • Volume: Fl Oz, Milliliter, Cup, Liter, Pint, Quart, Gallon • Weight: Ounce, Gram, Lb, Kg, Stone, Ton, M. Ton • Temperature: Celsius, Fahrenheit Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Conversion4 screens
Converter3 screens

Verdict

The call

The clearest difference is price: Converter at Free against Conversion's $0.99. Converter also leads on rating (4.8 vs 3.0) and review sentiment (100% vs 61%). Conversion's advantage is in-app purchases (none vs 6) and ads (none vs shown). On ratings volume and device support 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

Converter is free to download; Conversion costs $0.99 up front. Converter sells 6 in-app purchases, starting at $0.39 per 7 days. Conversion asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Converter holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 61% of Conversion's written reviews are positive against 100% of Converter's.

UpkeepUpdate frequency

Conversion ships an update every 2 months, Converter weekly. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.

Scorecard8 real differences · 2 level
Conversion versus Converter: the parameters behind the verdict, then further details
ParameterConversionConverter
Price$0.99Free — better
Rating3.0 (5 ratings)4.8 (4 ratings) — better
Positive reviews61.0% of reviews100.0% of reviews — better
Number of ratings5 — better4
Update frequencyEvery 2 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.016.6 — better
Further details — not scored
Size2 MB9 MB
Age rating4+4+
DeveloperDuncan CampbellALEKSEI SKVORTSOV, IE

Customer experience

Conversion

Written reviews41 reviews
Positive61.0%
Neutral19.5%
Negative19.5%

Converter

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Conversion

No in-app purchases

6 purchases

Converter

Subscriptions5
  • Week$0.397 Days
  • Month$0.491 Month
  • Monthly$0.491 Month
Show 2 more
  • Annually$0.991 Year
  • Year$1.991 Year
One-time1
  • Forever$1.99

Questions

Is Conversion free?
Conversion costs $0.99, with no in-app purchases.
Is Converter free?
Converter is free to download, with in-app purchases available.
Which has better reviews, Conversion or Converter?
Converter is rated higher. Conversion averages 3.0 out of 5 from 5 ratings, while Converter averages 4.8 from 4 ratings.
Do Conversion or Converter have ads?
Converter shows ads; Conversion does not.
Which is updated more often, Conversion or Converter?
Conversion ships an update every 2 months, and Converter weekly. Most recently, Conversion was updated on October 21, 2026 and Converter on October 22, 2026.

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