Scala Architectural Scale vs Scale Conversion Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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 —-—
Scale Conversion Calculator
This utility app facilitates weight conversions between Metric, Gross, and Net tons. It also allows for the calculation of price rates based on weight and other related calculations.
- Metric ton conversion
- Gross ton conversion
- Net ton conversion
- Price rate per weight calculation
- Other weight-related calculations
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TMS International Weight Conversion Calculator to convert between Metric, Gross, and Net tons; and calculate price rate per weight; as well as other calculations. All contents of TMS's Conversion Calculator is provided "as is", without warranty of any kind.
Screenshots
Verdict
The clearest difference is in-app purchases: Scale Conversion Calculator at none against Scala Architectural Scale's 1. Scale Conversion Calculator also leads on update cadence (every 5 days vs every 4 months) and review sentiment (100% vs 87%). Scala Architectural Scale's advantage is ratings volume (25 vs 4). On price, rating, ads and monetization model 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
Both are free to download. Scala Architectural Scale sells 1 one-off in-app purchase. Scale Conversion Calculator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Scala Architectural Scale against 4.5 for Scale Conversion Calculator. That said, the two scores are not equally well evidenced: Scala Architectural Scale has 25 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 87% of Scala Architectural Scale's written reviews are positive against 100% of Scale Conversion Calculator's.
Scala Architectural Scale ships an update every 4 months, Scale Conversion Calculator every 5 days. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.
| Parameter | Scala Architectural Scale | Scale Conversion Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (25 ratings) — better | 4.5 (4 ratings) |
| Positive reviews | 86.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 25 — better | 4 |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Noerah Alvi | TMS International LLC |
Customer experience
Scala Architectural Scale
Scale Conversion Calculator
In-app purchases
Scala Architectural Scale
- Scala Full Version$2.99
Scale Conversion Calculator
No in-app purchases
Questions
Is Scala Architectural Scale free?
Is Scale Conversion Calculator free?
Which has better reviews, Scala Architectural Scale or Scale Conversion Calculator?
Do Scala Architectural Scale or Scale Conversion Calculator have ads?
Which is updated more often, Scala Architectural Scale or Scale Conversion Calculator?
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