Comparison

Scala Architectural Scale vs Smart Propane Scale

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

Smart Propane Scale

This utility app helps you monitor your propane levels to avoid running out unexpectedly. It provides real-time information on how much propane you have, eliminating guesswork and ensuring you're always prepared for activities like BBQs.

Highlights
  • Real-time propane level monitoring
  • Prevents running out of propane
  • Eliminates guesswork
  • Useful for BBQs and outdoor activities
Features
Read full description

Never run out of propane again! Flame King monitors your propane levels for you. From now on, you can know exactly how much propane you have in any given moment. No more guessing, no more getting stuck in the middle of your BBQ. Flame King got your back!

Screenshots

Scala Architectural Scale4 screens
Smart Propane Scale4 screens

Verdict

The call

The clearest difference is review sentiment: Scala Architectural Scale at 87% against Smart Propane Scale's 13%. Scala Architectural Scale also leads on rating (4.6 vs 2.4) and monetization model (free vs free with in-app purchases). Smart Propane Scale's advantage is iOS requirement (11.0 vs 15.6). On price, ratings volume, update cadence and ads 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 and Smart Propane Scale sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Scala Architectural Scale holds the better App Store score, 4.6 against 2.4. Both are backed by a comparable volume of ratings — 24 and 11 respectively. Written reviews point the same way: 87% of Scala Architectural Scale's written reviews are positive against 13% of Smart Propane Scale's.

UpkeepUpdate frequency

Scala Architectural Scale ships an update every 4 months, Smart Propane Scale every 5 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
Scala Architectural Scale versus Smart Propane Scale: the parameters behind the verdict, then further details
ParameterScala Architectural ScaleSmart Propane Scale
PriceFreeFree
Rating4.6 (24 ratings) — better2.4 (11 ratings)
Positive reviews86.7% of reviews — better12.5% of reviews
Number of ratings24 — better11
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size1 MB47 MB
Age rating4+4+
DeveloperNoerah AlviYSN Imports, Inc.

Customer experience

Scala Architectural Scale

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

Smart Propane Scale

All ratings11 ratings
Positive27.3%
Neutral0.0%
Negative72.7%
Written reviews8 reviews
Positive12.5%
Neutral0.0%
Negative87.5%

In-app purchases

1 purchases

Scala Architectural Scale

One-time1
  • Scala Full Version$2.99
1 purchases

Smart Propane Scale

One-time1
  • 30lbs & 40lbs tank support$1.99

Questions

Is Scala Architectural Scale free?
Scala Architectural Scale is free to download, with in-app purchases available.
Is Smart Propane Scale free?
Smart Propane Scale is free to download, with in-app purchases available.
Which has better reviews, Scala Architectural Scale or Smart Propane Scale?
Scala Architectural Scale is rated higher. Scala Architectural Scale averages 4.6 out of 5 from 24 ratings, while Smart Propane Scale averages 2.4 from 11 ratings.
Do Scala Architectural Scale or Smart Propane Scale have ads?
Neither Scala Architectural Scale nor Smart Propane Scale shows ads.
Which is updated more often, Scala Architectural Scale or Smart Propane Scale?
Scala Architectural Scale ships an update every 4 months, and Smart Propane Scale every 5 months. Most recently, Scala Architectural Scale was updated on October 23, 2026 and Smart Propane Scale on October 17, 2026.

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