Rafter Help vs Construction Calculator Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rafter Help
This app simplifies roof construction by calculating rafter lengths and related measurements. It supports various input formats for pitch and length, offering both quick calculations for gable roofs and advanced control for more complex needs.
- Calculate rafter length and associated values
- Determine roof pitch, rafter lengths, and ridge height
- Supports gable roofs
- Advanced calculation options
- Multiple input formats for pitch (radians, degrees, DMS, rise/run)
- Flexible length units (mm, cm, inches, feet)
- Customizable decimal places
Read full descriptionHide full description
Rafter Help is the easiest way to calculate rafter length and associated values when building! Quickly find roof pitch, rafter lengths and ridge height for gable roofs, based on room and ridge width. Or calculate length values with more control from the Advanced tab. Features Include: - Accurately solve rafter equations - Enter pitch steepness in radians, decimal degrees or degrees, minutes, seconds (DMS) or rise/run (e.g. 8/12) - Enter lengths in mm, cm, inches or feet - Select your preferred number of decimal places
Construction Calculator Master
This advanced construction calculator simplifies complex measurements for builders, carpenters, and remodelers. It offers a comprehensive suite of math functions, multi-unit support, and visual aids for calculations involving fractions, trigonometry, and rafters. Reduce errors and save time with its intuitive interface and customizable options.
- Multi-unit fraction support (feet, inches, yards, metric)
- Trigonometric functions with visualization
- Rafter and triangle visualization
- Imperial, Metric, and US Fractional units
- Customizable fraction resolution
- Memory and history functions
- Dark mode support
Read full descriptionHide full description
Get ready for the next generation construction calculator. A must-have tool for fellow builder, carpenter, remodeler and handymen. Save time and reduce costly errors with our extremely easy to use construction calculator with full visual mode for all your calculations. This app features: - Easy to use with a comprehensive set of math functions. - Advanced multi-unit (feet inch fractions, yards, decimal feet, decimal inches and metric) fraction support - Full trig functions with visualization: sine, cosine, tangent, arcsine, arccosine and arctangent - Visualization of triangles, arcs, common and hip/valley rafters - Advanced calculation modes - Imperial, Metric, and US Fractional units - Customizable fraction resolution - Memory and History functions - Max, Min, and average calculation of values in memory - Dark mode support and much more. Download today and become a 10x builder! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Construction Calculator Master at Free against Rafter Help's $1.99. Construction Calculator Master also leads on review sentiment (70% vs 40%) and update cadence (fortnightly vs every 5 months). Rafter Help's advantage is in-app purchases (none vs 10) and rating (4.5 vs 4.3). On ratings volume, ads, device support and iOS requirement 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
Construction Calculator Master is free to download; Rafter Help costs $1.99 up front. Construction Calculator Master sells 10 in-app purchases, starting at $0.99 per 7 days. Rafter Help asks for nothing beyond the download.
Rafter Help holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 212 and 436 respectively. Written reviews complicate that: 40% of Rafter Help's written reviews are positive against 70% of Construction Calculator Master's, so the app with the better star average is not the one people write more warmly about.
Rafter Help ships an update every 5 months, Construction Calculator Master fortnightly. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Rafter Help | Construction Calculator Master |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.5 (212 ratings) — better | 4.3 (436 ratings) |
| Positive reviews | 40.0% of reviews | 70.0% of reviews — better |
| Number of ratings | 212 | 436 — better |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 6 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Uncaught Exception Inc |
Customer experience
Rafter Help
Construction Calculator Master
Bugs and requests
Rafter Help
Reported bugs
4 issues- Cannot add 1/4 inch
- Missing decimal point on keypad
- Major error in basic gable drawing
- App won't open, says 'waiting'
Requested features
8 requests- Add 1/4 inch input
- Provide cut angles
- Include decimal point on keypad
- Support hip rafters
- Correct drawing error for basic gable
Show 3 moreShow fewer
- Include HAP calculation
- Include rafter width
- Accept angles in degrees and pitch-in-12
Construction Calculator Master
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Rafter Help
No in-app purchases
Construction Calculator Master
- 1 week7 Days trial$0.997 Days
- 1 week$2.997 Days
- 1 week7 Days trial$2.997 Days
Show 7 moreShow fewer
- 1 month7 Days trial$3.991 Month
- 1 week7 Days trial$4.997 Days
- 1 month3 Days trial$5.991 Month
- 1 month7 Days trial$5.991 Month
- 1 month$9.991 Month
- 1 year7 Days trial$29.991 Year
- 1 year7 Days trial$49.991 Year
Questions
Is Rafter Help free?
Is Construction Calculator Master free?
Which has better reviews, Rafter Help or Construction Calculator Master?
Do Rafter Help or Construction Calculator Master have ads?
Which is updated more often, Rafter Help or Construction Calculator Master?
Other comparisons
