Best Mm Scale Apps

134+ iOS apps curated and reviewed

4.1 avg rating
19 free apps
Updated September 2026

Whether you're new to mm scale or looking for an upgrade, our curated collection of 134+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Mm Scale Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Scala Architectural ScaleScala Architectural ScaleFree4.6★ (25)NoYesJul 2026
2Vernier Caliper MicrometerVernier Caliper MicrometerFree4.1★ (22)NoYesMay 2026
3Scale RatioScale RatioFree3.7★ (3)NoYesAug 2026
4Tape Measure & Ruler АррTape Measure & Ruler АррFree4.2★ (4.3K)YesYesSep 2026
5ModelScaleCalcModelScaleCalcFree5.0★ (4)NoJul 2026
6Just Scale kitchen scaleJust Scale kitchen scaleFree1.8★ (70)NoNoSep 2026
7Scale For Grams & Weight ScaleScale For Grams & Weight ScaleFree3.7★ (3)NoYesSep 2026
8inch mm converterinch mm converterFree4.6★ (104)YesNoSep 2026

Top Picks for Mm Scale

Scala Architectural Scale#1

Scala Architectural Scale by Noerah Alvi

To measure printed drawings
Editor's Choice
🔧 Utilities
4.6(25 ratings)
FreeIn-App Purchases
Scala Architectural Scale screenshot 1
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This app allows users to measure printed architectural and engineering drawings directly on their device. It supports both known and unknown scales, offering fixed and variable scale options for precise measurements. Users can also select secondary units for quick conversions.

More Mm Scale apps to explore

FAQ about Mm Scale

What are the best mm scale apps for iPhone?
Scala Architectural Scale tops our mm scale apps ranking as of September 2026, with a 4.6-star average from 25 App Store ratings, and it's free to download.
Yes — 19 of the top mm scale apps we rank are free to download, including Scala Architectural Scale and Vernier Caliper Micrometer.
Scala Architectural Scale has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 134+ mm scale apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Scala Architectural Scale uses your device's screen to measure printed drawings. You can place your device on the drawing and use fixed scales if you know the drawing's scale, or variable scales to determine and use an unknown scale.
Yes, Scala Architectural Scale features a variable scale mode. You can slide your finger on the variable scale to match a known element on the drawing, lock it, and then use it to measure other elements.