Comparison

ArchitectScaler vs Architects Ruler

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

Head to head
About

ArchitectScaler

Features
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ArchitectScaler turns your iPhone and iPad into a scale ruler, a drafting calculator, and the small toolbox of conversions architects, designers, and students actually reach for. No triangular ruler, no clunky calculator, no "calculate" button - you type, and the answer is already there. Version 2.0 opens on a Home screen of tools. Tap one and you are working. THE CONVERTER Set a scale once, then keep a live ledger of dimensions. Type a real-world length to get the drawing length, or type a drawing measurement to get the real thing - both directions, instantly. Name any row ("North wall", "Door", "Site") so a list of numbers reads as a list of things. Your rows, scale, and units are saved between launches. FEET AND INCHES, PROPERLY Type 12'-6 1/2" the way you would write it. Scales like 1/4" = 1'-0" are first-class, and a keyboard row puts the ' " - and / marks one tap away. Change a unit and the app converts the value rather than re-reading the same digits. THE TOOLS Find scale from a drawing - measure any labeled dimension on a print and get the ratio back, with the nearest named scale offered as a one-tap match. Slope and pitch - convert between 1:20, percent, degrees, and roof pitch, and get the fall over a run. Area and volume - scale squared and cubed, from square millimeters through hectares and square inches through acres, plus cubic meters, feet, and yards. Rescale and print - the copier percentage that takes a drawing from one scale to another, and what a line measures after the change. Sheet fit - whether a plan fits a sheet inside its margins, and the largest named scale that would. ISO A0 to A4, ANSI A to E, and Arch A to E1. Feet and inches - add and subtract lengths in drafting notation without converting to decimal first. Scale bar - generate a printable graphic scale and share it straight into a drawing. Model making - turn a real wall thickness into the nearest card, foam board, or acrylic sheet, and see how far off that substitution puts you. BUILT FOR THE WAY YOU WORK Metric and imperial: mm, cm, m, km, in, ft. Metric, architect, and engineering scale presets, or type any ratio you like - 1:48 and 1:37.5 are both fine. iPhone and iPad. Light and dark, following your system appearance. No account, no ads, no tracking, no data collection. Every calculation stays on your device. Built by an architect, for architects, interior designers, engineers, students, model makers, and anyone who works from a scaled drawing.

About

Architects Ruler

Features
Read full description

Architects Ruler is made by architects for architects. And designers. Simple and convenient, a quick tool to get grip on all dimensions on any scale.

Screenshots

ArchitectScaler4 screens
Architects Ruler3 screens

Verdict

The call

The clearest difference is in-app purchases: ArchitectScaler at none against Architects Ruler's 1. ArchitectScaler also leads on iOS requirement (17.6 vs 26.0). Architects Ruler's advantage is update cadence (every 3 months vs every 14 months). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Architects Ruler sells 1 one-off in-app purchase. ArchitectScaler asks for nothing beyond the download.

UpkeepUpdate frequency

ArchitectScaler ships an update every 14 months, Architects Ruler every 3 months. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.

Scorecard3 real differences ยท 3 level
ArchitectScaler versus Architects Ruler: the parameters behind the verdict, then further details
ParameterArchitectScalerArchitects Ruler
PriceFreeFree
Update frequencyEvery 14 monthsEvery 3 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.6 โ€” better26.0
Further details โ€” not scored
Size3 MB4 MB
Age rating4+4+
DeveloperPratheek BalakrishnaGijs Raggers

In-app purchases

None

ArchitectScaler

No in-app purchases

1 purchases

Architects Ruler

One-time1
  • Lifetime scales menu$0.99

Questions

Is ArchitectScaler free?
ArchitectScaler is free to download, with no in-app purchases.
Is Architects Ruler free?
Architects Ruler is free to download, with in-app purchases available.
Do ArchitectScaler or Architects Ruler have ads?
Neither ArchitectScaler nor Architects Ruler shows ads.
Which is updated more often, ArchitectScaler or Architects Ruler?
ArchitectScaler ships an update every 14 months, and Architects Ruler every 3 months. Most recently, ArchitectScaler was updated on September 30, 2026 and Architects Ruler on October 17, 2026.

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