Comparison

Trigonometry calc vs RafterTools+ Dark

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

Head to head
About

Trigonometry calc

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

Highlights
  • Calculate side lengths
  • Calculate angles
  • Pythagorean Theorem
  • Trigonometry functions
  • Learn simple trigonometry
  • General triangle calculator (premium)
Features
Read full description

Use Trigonometry Calc to calculate sidelengths and angles in the right angled triangle. By the help of Pythagorean Theorem and some trigonometry functions you can in this app calculate side lengths and angles in any right angled triangle. Learn simple trigonometry. •Math •Trigonometry •Pythagorean Theorem Trigonometry Premium Go ad-free forever and unlock the advanced General Triangle Calculator (SAS/SSA/ASA). Solve any triangle, not just right triangles

About

RafterTools+ Dark

Features
Read full description

RafterTools+ Dark: Advanced Roof Framing Geometry, Stereotomy, Trigonometry & Roof Cutting-Framing In the evolving world of carpentry, mastering roof framing requires precision, deep knowledge, and the right tools. RafterTools+ Dark is designed to elevate both apprentices and seasoned carpenters by providing a comprehensive suite of calculators and resources, ensuring confidence and accuracy in every project. To truly thrive as a professional carpenter today, you need more than top-notch equipment—you need digital support. The RafterTools+ Dark app complements your toolkit, empowering you to transition from apprentice to journeyman, or become the most knowledgeable rough frame carpenter on any jobsite. Key Features and Calculators Equal Pitched Hip Roof Calculator Irregular Hip Roof Calculator Octagon Roof Calculator Timber Framing Angles Calculator Polygon Roof Calculator (3-16 sided) Irregular Hip Rafter Angles Calculator Bay Window Rafter Angles Calculator Bay Window Hip Roof Calculator Barrel Dormer Roof Calculator Eyebrow Dormer Roof Calculator Round Tower Roof Calculator Elliptical X-Y Coordinates Calculator Elliptical Hip Rafters Calculator Carpenter’s Calculator Roof Framing Knowledge Base Groin Vault Calculator With Barrel Groin Vaults With Gothic Groin Vaults With Parabolic Groin Vaults Comprehensive Knowledge Base The app includes a searchable roof framing knowledge base with links to over 300 roof framing techniques and more than 800 drawings covering geometry, stereotomy, and trigonometry. These resources make complex concepts accessible and practical for any skill level. The RafterTool+ Dark website has links to help files for each of the calculators. Customizable Controls With flexible control settings, users can adjust the animated blade speed, making it possible to keep up with fast-paced thinking and intricate calculations. This feature ensures the app adapts to your workflow and learning style. Whether you're aiming to perfect your craft or tackle challenging roof designs, RafterTools+ Dark is the digital companion that supports your journey to mastery in carpentry.

Screenshots

Trigonometry calc4 screens
RafterTools+ Dark4 screens

Verdict

The call

The clearest difference is price: Trigonometry calc at Free against RafterTools+ Dark's $17.99. Trigonometry calc also leads on iOS requirement (15.6 vs 26.0). RafterTools+ Dark's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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

Trigonometry calc is free to download; RafterTools+ Dark costs $17.99 up front. Trigonometry calc sells 1 one-off in-app purchase. RafterTools+ Dark asks for nothing beyond the download.

UpkeepUpdate frequency

Trigonometry calc ships an update every 3 months, RafterTools+ Dark every 3 weeks. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Trigonometry calc versus RafterTools+ Dark: the parameters behind the verdict, then further details
ParameterTrigonometry calcRafterTools+ Dark
PriceFree — better$17.99
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.0
Further details — not scored
Size10 MB47 MB
Age rating4+4+
DeveloperBo KalvslundSim Ayers

In-app purchases

1 purchases

Trigonometry calc

One-time1
  • Premium$0.99
None

RafterTools+ Dark

No in-app purchases

Questions

Is Trigonometry calc free?
Trigonometry calc is free to download, with in-app purchases available.
Is RafterTools+ Dark free?
RafterTools+ Dark costs $17.99, with no in-app purchases.
Do Trigonometry calc or RafterTools+ Dark have ads?
Trigonometry calc shows ads; RafterTools+ Dark does not.
Which is updated more often, Trigonometry calc or RafterTools+ Dark?
Trigonometry calc ships an update every 3 months, and RafterTools+ Dark every 3 weeks. Most recently, Trigonometry calc was updated on October 12, 2026 and RafterTools+ Dark on October 11, 2026.

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