CMCalc vs YardScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CMCalc
This app emulates a classic 1980s computer math calculator, offering decimal arithmetic, binary conversions, and logic functions. It supports parentheses for complex calculations and includes modern features like copy/paste and landscape mode.
- Decimal arithmetic
- Binary conversions (decimal, binary, octal, hexadecimal)
- Binary logic functions
- Operator grouping with parentheses
- Hexadecimal input (A-F)
- Copy and paste results/functions
- Landscape mode
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The CMCalc application is a replica of the Casio CM-100 Computer Math Calc solar powered calculator that was sold in the mid 1980’s. It performs simple decimal arithmetic and basic binary conversions (decimal - binary - octal - hexadecimal) and binary logic functions. While it is a standard infix calculator, it supports operator grouping with parentheses. For hexadecimal calculations, the input keys include A through F. CMCalc application performs all the same functions as the calculator, and has the same look as the original. There are a couple features that were not conceivable in the 1980’s on a calculator … such as the ability to copy and paste the results or the entered function, and a landscape mode for devices with 4 inch or larger screens. The face of the calculator can be viewed in two modes including a traditional application style, and a photo replica of the original calculator face.
YardScan
Measure yard areas and calculate material needs using augmented reality. Simply tap corner points to define shapes and select materials for instant estimates of bags or cubic yards. Avoid extra trips to the store with precise calculations for various landscaping projects.
- AR yard area measurement
- Instant material quantity calculation
- Support for various materials (mulch, soil, gravel, pavers, sod)
- Overage buffer and cost estimation
- Project saving and photo attachments
- Metric unit support
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YardScan uses your iPhone's AR camera to measure any yard area and instantly calculate how much material you need. Tap corner points on the ground to trace the exact shape — beds, borders, lawn sections, any polygon — then pick your material and depth. YardScan does the math. HOW IT WORKS Point your camera at the ground, tap each corner of the area, and YardScan measures the real shape. Pick your material and depth, and get your bag count or cubic yardage instantly. No tape measure, no calculator, no second trips to the store. FREE • Unlimited AR measurements • Square footage calculation • Mulch calculator (bag count + cubic yards) • Share results as text YARDSCAN PRO — one-time purchase, no subscription • All materials: topsoil, compost, pea gravel, river rock, sand, lava rock, wood chips • Sod calculator (rolls) • Paver calculator (custom paver sizes) • Edging calculator (linear feet) • Bulk order mode (cubic yards for delivery orders) • Overage buffer (add 10% or 15%) • Cost estimator (enter price per unit) • Save and name projects • Photo attachments on saved projects • Metric units Works on any modern iPhone — no LiDAR required.
Screenshots
Verdict
The clearest difference is rating: YardScan at 5.0 against CMCalc's 4.5. YardScan also leads on review sentiment (100% vs 75%). CMCalc's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.6). On price, ratings volume, ads 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
Both are free to download. YardScan sells 1 one-off in-app purchase. CMCalc asks for nothing beyond the download.
YardScan holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 75% of CMCalc's written reviews are positive against 100% of YardScan's.
| Parameter | CMCalc | YardScan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (6 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 3 |
| Update frequency | Every 45 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | William David | Bryskin Enterprises LLC |
Customer experience
CMCalc
YardScan
In-app purchases
CMCalc
No in-app purchases
YardScan
- YardScan Pro$3.99









