Comparison

Convert vs Scale Ratio

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

Head to head
About

Convert

Perform common conversions for length, area, volume, angle, and scales with a modern, efficient interface. Save your preferences and access a history of calculations for quick retrieval. Customize the app's appearance to suit your style.

Highlights
  • Common unit conversions
  • Custom scale conversions
  • Saved conversion preferences
  • Conversion history
  • Customizable interface colors
  • Supports luminance conversions
Features
Read full description

With this application you can perform common conversions of length, area, volume, angle, between two scales, etc. in just a few clicks. Have it at hand will make good services! Especially as your conversion preferences are saved for even more efficiency. • Need a converter both modern and relevant? Do not miss Convert, an application that won't leave anyone indifferent! Indeed, thanks to a simple and effective esthetic, whether you are professional or individual, it will permit you to quickly perform complex conversions. • Why is it unique? That's not all! It also performs conversions of scales and luminance in a few clicks. In fact, it's a kind of pocket "kutch" that will help you for reading plans with, in addition, a management units. So you no longer have to think to know the size, in real meter, of 2.7in at 1:48 :) ​​Also, you can add your own custom scales! As for candela/in², Nit and Lambert, they will have no more secrets for you. • Even more? All your conversions are saved in a history available at all times. This classification system will permit you to quickly find your latest calculations. • The final word. Convert is customizable according to your wishes. Choose and change at any time the color of the interface to find the one that suits you best! In this new version, there is no more in-app purchase. After purchasing the application via the App Store, all the features are free!

About

Scale Ratio

Easily convert distances between any scales for projects like architecture and model building. Input your measurements and desired scale to instantly calculate scaled distances.

Highlights
  • Convert distances between any scales
  • Supports architecture and modeling projects
  • Instant calculation of scaled distances
  • User-friendly input for distance and scale
Features
Read full description

Scale a measurement to a larger or smaller measurement, which is useful for architecture, modelling, and other projects. This app can be used to easily convert any distance in any scale to any other distance in any other scale. Simply enter the distance and scale to convert and the result will be displayed instantly. You need for example to create a mock up of a building at the scale 1:500. Enter the ground distances in the calculator, set the scale ratio to 1:500 and you'll get the mock up distance.

Screenshots

Convert4 screens
Scale Ratio3 screens

Verdict

The call

The clearest difference is rating: Convert at 5.0 against Scale Ratio's 3.7. Convert also leads on monetization model (free vs free with in-app purchases) and iOS requirement (8.0 vs 10.0). Scale Ratio's advantage is review sentiment (83% vs 60%) and update cadence (fortnightly vs every 5 weeks). On price, ads, in-app purchases 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

Both are free to download. Convert sells 2 one-off in-app purchases and Scale Ratio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Convert holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 60% of Convert's written reviews are positive against 83% of Scale Ratio's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Convert ships an update every 5 weeks, Scale Ratio fortnightly. The most recent releases landed on September 10, 2026 and August 14, 2026 respectively.

Scorecard6 real differences · 4 level
Convert versus Scale Ratio: the parameters behind the verdict, then further details
ParameterConvertScale Ratio
PriceFreeFree
Rating5.0 (1 ratings) — better3.7 (3 ratings)
Positive reviews60.0% of reviews83.3% of reviews — better
Number of ratings13 — better
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS8.0 — better10.0
Further details — not scored
Size14 MB25 MB
Age rating17+4+
DeveloperToutdanslapocheAdrien Brecheteau

Customer experience

Convert

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive60.0%
Neutral6.7%
Negative33.3%

Scale Ratio

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

2 purchases

Convert

One-time2
  • Full Version$0.99
  • Premium Version$0.99
1 purchases

Scale Ratio

One-time1
  • Delete Ads in the app$4.99

Questions

Is Convert free?
Convert is free to download, with in-app purchases available.
Is Scale Ratio free?
Scale Ratio is free to download, with in-app purchases available.
Which has better reviews, Convert or Scale Ratio?
Convert is rated higher. Convert averages 5.0 out of 5 from 1 ratings, while Scale Ratio averages 3.7 from 3 ratings.
Do Convert or Scale Ratio have ads?
Neither Convert nor Scale Ratio shows ads.
Which is updated more often, Convert or Scale Ratio?
Convert ships an update every 5 weeks, and Scale Ratio fortnightly. Most recently, Convert was updated on September 10, 2026 and Scale Ratio on August 14, 2026.

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