Model Colors vs Scale Ratio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Model Colors
This app helps hobbyists manage their paint collections for models. Track colors you own, colors you need, and easily share lists. Find similar colors and organize them into custom lists for different projects.
- Track owned and needed paint colors
- Browse over 40,000 colors from various brands
- Share color lists via email and messaging
- Set favorite colors for quick access
- Find similar colors using standards or calculations
- Create custom color lists for projects
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Model Colors is an application for helping you keep track of your hobby model colors and projects. Have you ever ended up buying the wrong colors because you didn’t remember the exact code of the color you needed or forgot to get that pesky Dunkelgelb that you needed to finish that glorious tank you’re working on? If so, then Model Colors helps you keep track of the colors that you own and the colors that you need to buy. The application contains lists of all colors from a set of brands and you can browse these lists and mark the ones you already own and the ones you need to buy. Currently the app has over 50000 colors included from most big and many small manufacturers. The lists of your own colors and colors that you need to buy can be easily shared via mail, iMessage etc. If you mainly use some particular color types or individual colors you can set them as favorites and easily access them from the main menu. You can check for colors that are similar to a certain color either via color standards like FS, RAL, RLM etc, or via industry standard CIE deltaE 2000 calculations. Various colors can also be grouped together for quick access into custom color lists. You can keep the colors you normally use for US airplanes in one list and colors you use for fantasy miniatures in another, making them easy to find. Some of the included brands: Abteilung 502, Agama, AKAN, AK Interactive, Alclad II, Ammo, Andrea, AOK Silveroaks, Apple Barrell, Arcus Hobby Colors, Army Painter, Badger, Bits of War, Coat D'Arms, Colour Forge, Craft Smart, Createx, Creature Caster, Daler-Rowney, Darkstar Miniatures, Duncan Rhodes Painting Academy, Dwarven Forge, E7, Fantasy Flight Games, Faskolor, Fire Scale Modeler, Flames of War, Flory Models, ForgeWorld, Gaia, Gamescraft, Games Workshop, Golden, Gravity Colors, Green Stuff World, Hannants, Hataka, Heller, Hobby Mio, Huge Miniatures, Humbrol, ICM, Instar, Italeri, Jo Sonja's, Jumpwind, Kimera Models, Lefranc Bourgeois, LifeColor, Liquitex, Meng, Microscale, MIG Productions, Minuteman Scale Models, Mission Models, Modellers World, Modo, Monkey Modelling Paints, Monument Hobbies, Mr. Hobby, MR Paint, Nocturna Models, Paasche, Pacific88, Pactra, Pledge, Prince August, Privateer Press, ProScale Paints, Rackham, Reaper, Rembrandt, Revell, Rust-Oleum, Scale75, Scale Colors, Scale Modellers Supply, Sovereign Hobbies, Splash Paints, Tamiya, Testors, Titans Hobby, Tru-Color, True Earth, TT Combat, Turbo Dork, Ultimate Modelling Products, Vallejo, Vantage Modelling Solutions, Warcolours, Wargames Foundry, Warlord Games, Wilder, Winsor & Newton. You can also add the models that you are working on or plan to build in the future. For each model you can register the colors that are required and make sure that you don't forget to buy any essential colors. Each model can have a photos associated with it as well as notes. Using the notes and photos it is easy to keep a build diary or just keep track of things that you need to do at some point. Model Colors requires iCloud and iCloud Drive to be enabled for the app to work. iCloud Drive is used to save photos and documents for our models. Model Colors uses a subscription in order to support the application development and there's a trial period that lets you evaluate the app. Please see the link https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ for the End User License Agreement.
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.
- Convert distances between any scales
- Supports architecture and modeling projects
- Instant calculation of scaled distances
- User-friendly input for distance and scale
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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
Verdict
The clearest difference is rating: Model Colors at 4.6 against Scale Ratio's 3.7. Model Colors also leads on ratings volume (445 vs 3). Scale Ratio's advantage is review sentiment (83% vs 60%) and update cadence (fortnightly vs monthly). On price, ads, in-app purchases and monetization model 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
Both are free to download. Model Colors sells 4 in-app purchases, starting at $0.99 per month and Scale Ratio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Model Colors holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Model Colors has 445 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 60% of Model Colors'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.
Model Colors ships an update monthly, Scale Ratio fortnightly. The most recent releases landed on September 18, 2026 and August 14, 2026 respectively.
| Parameter | Model Colors | Scale Ratio |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (445 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 60.4% of reviews | 83.3% of reviews — better |
| Number of ratings | 445 — better | 3 |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | D-Pointer Oy | Adrien Brecheteau |
Customer experience
Model Colors
Scale Ratio
In-app purchases
Model Colors
- 1 month subscription7 Days trial$0.991 Month
- 3 month subscription14 Days trial$1.993 Months
- 6 month subscription1 Month trial$3.496 Months
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- 1 year subscription1 Month trial$5.991 Year
Scale Ratio
- Delete Ads in the app$4.99
Questions
Is Model Colors free?
Is Scale Ratio free?
Which has better reviews, Model Colors or Scale Ratio?
Do Model Colors or Scale Ratio have ads?
Which is updated more often, Model Colors or Scale Ratio?
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