# ScaleMate: Model Scale Calc — For model trains, kits & minis

> For model trains, kits & minis (iPhone/iPad app by Denys Dertwinkel.)

- Source: https://appshunter.io/ios/app/scalemate-model-scale-calc/id6818297203 (this page in markdown: same URL + `.md`)
- Developer: [Denys Dertwinkel](https://appshunter.io/developer/6804745700)
- Category: Utilities, Productivity
- Price: $1.99
- Age rating: 4+
- Requires: iOS 15.0 · 60 MB
- Languages: German (Germany), American English, French (France), Italian, Japanese, Korean, Dutch, Polish, European Portuguese, European Spanish and 2 more
- Released: 2026-10-08
- Data updated: 2026-10-29

## What is ScaleMate?

ScaleMate is a scale calculator for model builders: model railways, plastic kits, dioramas, dollhouses, tabletop miniatures and architectural models. Enter a real-world measurement and get the model size, or measure your model and get the real size. Example: 4.8 m in real life is 100 mm at 1:48.

CONVERT
• Real to model and model to real
• mm, cm, m, inches and feet, with inch fractions next to the decimal value
• Length × width × height in one step
• Compare one measurement across several scales side by side
• Scale to scale: convert 1:72 to 1:48 and read the enlargement percent for a photocopier or your 3D-print slicer (1:72 → 1:48 = 150 %)
• Find the scale: enter one real and one model measurement and get the nearest named scale plus the deviation

SCALES AND GAUGES BY NAME
Searchable picker with favorites and recents:
• Railway: Z, N, N (UK), TT, H0/HO, OO, S, 0, O, 1, G
• Figures: 6, 15, 20, 28 and 54 mm
• Kits: 1:6 to 1:700
• Dollhouse: 1:12, 1:24, 1:48, 1:144
• Architecture: 1:20 to 1:1000 and imperial such as 1/4" = 1'
• Custom scales (1:n) for everything else

MEASURE
• Measure directly on a photo using one known length; name and save any number of measurements
• Share the marked photo or add its measurements to a project as parts
• Use the iPhone screen as a scale ruler and calibrate it with a card
• Choose common reference objects when finding an unknown scale

PROJECTS
• Projects with parts lists, groups, materials and notes
• Cut lists with CSV and PDF export
• Calculation history

ONE PURCHASE, EVERYTHING INCLUDED
Everything is included with your purchase: no subscription, no in-app purchases, no account, no ads, no tracking. ScaleMate works offline. Your calculations and projects stay on your device, and files are only shared when you export them yourself. Dark mode. Interface in 12 languages that follows your device language. Made for iPhone.

ScaleMate is a calculation and organization aid. Results do not replace professional construction, material or safety advice.

## Is ScaleMate safe?

Not enough ratings yet to assess ScaleMate.

## Is ScaleMate legit?

ScaleMate: Model Scale Calc appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for ScaleMate is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.2.1 — 2026-10-26

• More reliable photo measuring and screen ruler calibration
• Better layout on small and landscape screens
• Translation and cut list CSV fixes

### 1.2.0 — 2026-10-21

New in 1.2:
• A completely redesigned workbench interface with a faster calculator and dedicated number pad
• Measure directly on photos: set a known length, name any number of measurements, save, share and add them to projects
• Use your screen as a scale ruler and calibrate it with a card
• Reference objects help you find unknown scales
• Usability, accessibility, layout and reliability improvements

### 1.1.0 — 2026-10-19

New in 1.1:
• Scales and gauges by name: searchable picker with favorites and recents
• Scale to scale conversion with enlargement percent for copier or 3D-print slicer
• Find the scale from a real and a model measurement, with nearest named scale and deviation
• Inch fractions next to decimal inches
• Dark mode
• The app follows your device language
• Fixes and improvements

### 1.0.0 — 2026-10-08

No release notes.

## More apps by Denys Dertwinkel

- [LastDone - Routines](https://appshunter.io/ios/app/lastdone-routines/id6804745697)
- [Horde vs Dragon: Viking Runner](https://appshunter.io/ios/app/horde-vs-dragon-viking-runner/id6811716165)

All apps by Denys Dertwinkel: https://appshunter.io/developer/6804745700

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-29.*