Trigonometry Help vs レコーダー
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trigonometry Help
This app helps you quickly solve for unknown angles and sides of right-angled triangles. It provides a workings view for understanding the math, a scale drawing of the triangle, and a reference for basic trigonometric formulas. You can input angles in various formats and choose your desired decimal precision.
- Solve right-angled triangles
- Workings view for solutions
- Scale drawing of solved triangle
- Basic trig formulae reference
- Multiple angle input formats
- Customizable decimal places
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Trig Help is a simple triangle calculator that enables you to quickly and easily find unknown angles & sides of any right-angled triangle. Features Include: - Accurately solve right-angled triangles - Workings view, so you can see the math behind the solutions (requires optional upgrade) - View a scale drawing of your solved triangle - View a handy set of basic trig formulae - Enter angles in radians, decimal degrees or degrees, minutes, seconds - Select your preferred number of decimal places What two App Store reviewers had to say about Trig Help: "I could never remember those simple formulas. I always had to dig out my text books from MANY YEARS ago to refresh my memory. THIS LITTLE APP IS A DELIGHT TO USE! I love it! Even my engineer friends are impressed. THANKS!" 5 Stars "Easy to use and accurate with high degree of precision. Would recommend to any toolmaker." 5 Stars Also available for OS X on the Mac App Store.
レコーダー
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スピークバディ パーソナルコーチング用の音声録音アプリです。
Screenshots
Verdict
The clearest difference is price: レコーダー at Free against Trigonometry Help's $1.99. レコーダー also leads on in-app purchases (none vs 3). Trigonometry Help's advantage is iOS requirement (10.0 vs 12.2). On update cadence, 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
レコーダー is free to download; Trigonometry Help costs $1.99 up front. Trigonometry Help sells 3 one-off in-app purchases. レコーダー asks for nothing beyond the download.
Trigonometry Help ships an update every 13 months, レコーダー every 20 months. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.
| Parameter | Trigonometry Help | レコーダー |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.7 (477 ratings) — better | — |
| Positive reviews | 90.8% of reviews | — |
| Number of ratings | 477 — better | — |
| Update frequency | Every 13 months — better | Every 20 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 21 MB | 1 MB |
| Age rating | +4 | 4+ |
| Developer | Armchair Engineering | SpeakBUDDY Ltd. |
Bugs and requests
Trigonometry Help
Reported bugs
2 issues- Inconsistent performance on older devices
- Occasional crashes or freezes
Requested features
3 requests- Support for irregular triangles
- Ability to show step-by-step workings
- Option to switch between degrees/minutes/seconds and decimal values
レコーダー
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Trigonometry Help
- Trig Help Premium$0.99
- Trig Help Premium$1.99
- Trig Help Premium$3.99
レコーダー
No in-app purchases
