Comparison

Scala Architectural Scale vs Snap Draw

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

Head to head
About

Scala Architectural Scale

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.

Highlights
  • Fixed and variable scale measurement
  • Supports unknown drawing scales
  • Secondary unit conversions (metric, decimal feet, feet/inches)
  • Adjustable measurement precision
  • Extensive scale options for architectural, engineering, and metric drawings
Features
Read full description

Let Scala Architectural and Engineering Scale change the way you measure printed drawings on the go and at your desk. With fixed and variable scales there is no limit to measuring a printed drawing of any scale, even if the scale is unknown. FIXED SCALES If you know the scale of a drawing, place your device on the drawing, scroll to the scale of the printed drawing and watch the chosen scale slide in. VARIABLE SCALES If the scale of a drawing is unknown, slide your finger on the variable scale and match the scale of one known element, lock it and use it to measure all elements on that drawing. MEASURING Slide the measurement slider in fixed or variable scale modes, along the scale to see the desired measurement displayed. SECONDARY UNITS Choose secondary units to be displayed while measuring, to quickly convert between metric, decimal feet and feet and inches. PRECISION Control the precision of the measurement units. —-— Scala Free Version includes: ARCHITECTURAL Fixed Scales: Full Scale (12”=1’-0”), 6”=1’-0”, 3”=1’-0”, 1 1/2”=1’-0”, 1”=1’-0”, 3/4”=1’-0” Variable Scale Range: Between full scale and 1/32”=1’-0” ENGINEERING Fixed Scales: 1”=10’, 1”=20’, 1”=30’, 1”=40’, 1”=50’ and 1”=60’ Variable Scale Range: Between 1”=10’ and 1”=300’ METRIC Fixed Scales: 1:1, 1:2, 1:5, 1:10, 1:20, 1:25 Variable Scale Range: Between 1:1 and 1:1000 Scala Full Version includes all scales above plus the following: ARCHITECTURAL Fixed Scales: 1/2”=1’-0”, 3/8”=1’-0”, 1/4”=1’-0”, 3/16”=1’-0”, 1/8”=1’-0”, 3/32”=1’-0”, 1/16”=1’-0”, 1/32"=1'-0" ENGINEERING Fixed Scales: 1"=80', 1"=100', 1"=200', 1"=300' METRIC Fixed Scales: 1:30, 1:40, 1:50, 1:75, 1:100, 1:125, 1:200, 1:250, 1:300, 1:400, 1:500, 1:1000 —-—

About

Snap Draw

This app helps you create detailed plans and drawings with intuitive touch controls. It provides auditory and visual feedback when lines connect, ensuring accuracy. Save, export, and share your creations in various formats, ideal for both casual fun and professional design.

Highlights
  • Auditory and visual line connection feedback
  • Save up to 75 projects
  • Export as PNG, SVG, PDF
  • Add per-line notes with measurements
  • Built-in shapes and features
  • Draw lines and arcs, edit curves
  • Zoom and pan for detail
Features
Read full description

Snap Draw is a simple to use and powerful app to help you make detailed plans or simple drawings. Hear and see a Snap when lines are connected, easing your ability to draw with your finger and KNOW the lines are lining up or joining. This is a feature that sets Snap Draw apart from other vector drawing apps - the ability to know what is under your fingertip (since humans don't have transparent fingers yet) *Save up to 75 projects on your device *Export and share your creations online as .png, svg., or .pdf formats *Ability to add and edit per line notes showing it's length and handles, ideal for blueprints *Built in shapes and features, like doors, walls, circles, squares and more! *Draw lines and arcs, stretch a line into a curve and edit it at will *Zoom and Pan to get the details just right *Email your drawing as a .svg and edit in professional vector art and cad design software *Great for casual drawing fun, or design your deck with measurements!

Screenshots

Scala Architectural Scale4 screens
Snap Draw4 screens

Verdict

The call

The clearest difference is review sentiment: Scala Architectural Scale at 87% against Snap Draw's 15%. Scala Architectural Scale also leads on rating (4.6 vs 2.2) and ads (none vs shown). Snap Draw's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 4 months). On price, ratings volume 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. Scala Architectural Scale sells 1 one-off in-app purchase. Snap Draw asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Scala Architectural Scale holds the better App Store score, 4.6 against 2.2. Both are backed by a comparable volume of ratings — 25 and 20 respectively. Written reviews point the same way: 87% of Scala Architectural Scale's written reviews are positive against 15% of Snap Draw's.

UpkeepUpdate frequency

Scala Architectural Scale ships an update every 4 months, Snap Draw fortnightly. The most recent releases landed on July 17, 2026 and September 12, 2026 respectively.

Scorecard7 real differences · 3 level
Scala Architectural Scale versus Snap Draw: the parameters behind the verdict, then further details
ParameterScala Architectural ScaleSnap Draw
PriceFreeFree
Rating4.6 (25 ratings) — better2.2 (20 ratings)
Positive reviews86.7% of reviews — better15.4% of reviews
Number of ratings25 — better20
Update frequencyEvery 4 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size1 MB17 MB
Age rating4+4+
DeveloperNoerah Alviandrew bell

Customer experience

Scala Architectural Scale

All ratings25 ratings
Positive88.0%
Neutral8.0%
Negative4.0%
Written reviews15 reviews
Positive86.7%
Neutral0.0%
Negative13.3%

Snap Draw

All ratings20 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews13 reviews
Positive15.4%
Neutral0.0%
Negative84.6%

In-app purchases

1 purchases

Scala Architectural Scale

One-time1
  • Scala Full Version$2.99
None

Snap Draw

No in-app purchases

Questions

Is Scala Architectural Scale free?
Scala Architectural Scale is free to download, with in-app purchases available.
Is Snap Draw free?
Snap Draw is free to download, with no in-app purchases.
Which has better reviews, Scala Architectural Scale or Snap Draw?
Scala Architectural Scale is rated higher. Scala Architectural Scale averages 4.6 out of 5 from 25 ratings, while Snap Draw averages 2.2 from 20 ratings.
Do Scala Architectural Scale or Snap Draw have ads?
Snap Draw shows ads; Scala Architectural Scale does not.
Which is updated more often, Scala Architectural Scale or Snap Draw?
Scala Architectural Scale ships an update every 4 months, and Snap Draw fortnightly. Most recently, Scala Architectural Scale was updated on July 17, 2026 and Snap Draw on September 12, 2026.

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