Comparison

The Conversion App vs Unit Converter

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

Head to head
About

The Conversion App

This utility app offers a simple and powerful way to perform various unit conversions. It supports a wide range of categories and allows users to request new conversions to be added. Available on iPhone and iPad, it's designed for ease of use.

Highlights
  • Area conversion
  • Data conversion
  • Length conversion
  • Speed conversion
  • Time conversion
  • Volume conversion
  • Weight conversion
Read full description

By far the simplest, cleanest and most powerful unit conversion app available. Support for iPhone, iPad and Family Sharing. If you want a unit that isn't provided send a feedback email through the app and it will be added promptly. Currently Available Conversions: - Area - Data-computer data (byte, kilobyte, megabyte, etc.) - Fuel-milage - Length - Power - Pressure - Speed - Time (days, weeks, hours, etc.) - Volume - Weight - Acceleration - Energy - Cooking - Frequency - Temperature What's Coming Next? - Real-time currencies - Anything you ask for - Mac Support - Apple TV Support If you send a request for a new conversion type consider it done. Thank you icons8 designers for the icons.

About

Unit Converter

This app provides a comprehensive suite of tools for unit and currency conversions, along with various calculators and scientific constants. It offers real-time exchange rates, works offline, and supports a wide range of categories. Enjoy a user-friendly experience with features like dark mode and no conversion limits.

Highlights
  • Unit conversions
  • Currency conversions
  • Real-time exchange rates
  • Offline functionality
  • Variety of calculators
  • Scientific constants
  • Dark mode
Features
Read full description

OmniConvert is a powerful unit and currency converter focused on functionality, usability, and speed. It is completely free, supports a wide variety of conversion categories, and works offline. Exchange rates are updated in real-time (when connected to the internet) and all 166 major world currencies are supported. There are no conversion limits or size restrictions, and it even comes with a dark mode! OmniConvert offers an additional selection of useful calculators (e.g. salary, gratuity, baking) along with compilations of common scientific constants relevant to fields like physics and chemistry. Conversions: Currency, Volume, Mass, Temperature, Time, Length, Speed, Gas, Area, Energy, Pressure, Torque, Data, Angle, Frequency, Planetary Weight Calculators: Salary, Tip, Baking, Percentage, Mortgage, Auto Loan, BMI Constants: Chemistry, Physics, Density, Unit Prefix, Mathematics, Medicine, Astrophysics. Omniconvert is optimized for iPhone X, 11, 12, 13, 14, 15, and 16 as well as the Pro and Max variants of these devices.

Screenshots

The Conversion App4 screens
Unit Converter4 screens

Verdict

The call

The clearest difference is review sentiment: Unit Converter at 100% against The Conversion App's 45%. Unit Converter also leads on rating (5.0 vs 4.1) and update cadence (weekly vs every 5 weeks). The Conversion App's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and ratings volume 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. Unit Converter sells 1 one-off in-app purchase. The Conversion App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Unit Converter holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 60 and 42 respectively. Written reviews point the same way: 45% of The Conversion App's written reviews are positive against 100% of Unit Converter's.

UpkeepUpdate frequency

The Conversion App ships an update every 5 weeks, Unit Converter weekly. The most recent releases landed on September 18, 2026 and June 8, 2026 respectively.

Scorecard8 real differences · 2 level
The Conversion App versus Unit Converter: the parameters behind the verdict, then further details
ParameterThe Conversion AppUnit Converter
PriceFreeFree
Rating4.1 (60 ratings)5.0 (42 ratings) — better
Positive reviews45.0% of reviews100.0% of reviews — better
Number of ratings60 — better42
Update frequencyEvery 5 weeksWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size17 MB35 MB
Age rating4+4+
DeveloperSparrow Development LLCJonathan Chen

Customer experience

The Conversion App

All ratings60 ratings
Positive76.7%
Neutral3.3%
Negative20.0%
Written reviews20 reviews
Positive45.0%
Neutral15.0%
Negative40.0%

Unit Converter

All ratings42 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews19 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

The Conversion App

No in-app purchases

1 purchases

Unit Converter

One-time1
  • OmniConvert Pro$2.99

Questions

Is The Conversion App free?
The Conversion App is free to download, with no in-app purchases.
Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Which has better reviews, The Conversion App or Unit Converter?
Unit Converter is rated higher. The Conversion App averages 4.1 out of 5 from 60 ratings, while Unit Converter averages 5.0 from 42 ratings.
Do The Conversion App or Unit Converter have ads?
Unit Converter shows ads; The Conversion App does not.
Which is updated more often, The Conversion App or Unit Converter?
The Conversion App ships an update every 5 weeks, and Unit Converter weekly. Most recently, The Conversion App was updated on September 18, 2026 and Unit Converter on June 8, 2026.

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