Trigonometry Calc vs CNC Lathe Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate side lengths
- Calculate angles
- Pythagorean Theorem
- Trigonometry functions
- Learn simple trigonometry
- General triangle calculator (premium)
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Solve right triangles in seconds. Enter two values and Trigonometry Calc finds the missing side or angle. CALCULATE SIDES • Find side a, b or the hypotenuse c with the Pythagorean theorem • Clear diagrams show which side you are solving for CALCULATE ANGLES • Find angle A from two sides using sine, cosine or tangent • Results in degrees ANY TRIANGLE – PREMIUM • Solve triangles without a right angle using SAS, SSA and ASA • See all missing sides and angles at once LEARN THE THEORY • The unit circle with sin, cos and tan explained • An illustrated walk-through of the Pythagorean theorem • All formulas the app uses, in one place GOOD FOR • Students in math, physics and technical subjects • Homework and checking your own calculations • Carpenters, builders and DIY projects that need angles and lengths PREMIUM One purchase removes all ads forever and unlocks the general triangle calculator. No subscription. Works on iPhone and iPad.
CNC Lathe Simulator
This educational tool simulates a CNC lathe for beginners in machine building. It allows users to learn G-code programming for turning operations with 3D visualization of tool movements and workpiece processing. Ideal for students and distance learning in metallurgy and engineering.
- G-code programming for turning operations
- 3D simulation of lathe and tool movements
- Workpiece surface visualization
- Control program file management
- Cutting tool geometric parameter setup
- Continuous and step-by-step program execution
- G-code reference guide
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CNC Lathe Simulator is a software simulator of a numerical control lathe is an educational methodological development intended for basic familiarization of novice machine building specialists with the principles of programming parts turning operations using standard G-code (ISO). The three-dimensional simulation model is based on a lathe with an inclined bed, equipped with a CNC system, a twelve-position turret head, a three-jaw chuck, a tailstock, a system for supplying lubricating and cooling liquid, and other units. The material is processed along two controlled axes. Field of application of the software product: educational process using computer technology: laboratory lessons of students in computer classes, distance learning, demonstration support of lecture material in the group of areas of training and specialties: «Metallurgy, Engineering and Material Processing». The main functions of the application: editing the code of control programs of a lathe, operations with control program files, setting up geometric parameters of a cutting tool, continuous/step-by-step execution of control program blocks, three-dimensional visualization of tool movements in the machine’s workspace, simplified visualization of the workpiece surface, calculation of processing modes, a brief reference guide on using G-code. https://sunspire.site/terms_of_service.html
Screenshots
Verdict
The clearest difference is review sentiment: CNC Lathe Simulator at 55% against Trigonometry Calc's 0%. CNC Lathe Simulator also leads on rating (4.2 vs 3.0) and in-app purchases (none vs 1). Trigonometry Calc's advantage is price (Free vs $9.99). On 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
Trigonometry Calc is free to download; CNC Lathe Simulator costs $9.99 up front. Trigonometry Calc sells 1 one-off in-app purchase. CNC Lathe Simulator asks for nothing beyond the download.
CNC Lathe Simulator holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: CNC Lathe Simulator has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Trigonometry Calc's written reviews are positive against 55% of CNC Lathe Simulator's.
Trigonometry Calc ships an update every 3 months, CNC Lathe Simulator monthly. Both last shipped on November 11, 2026.
| Parameter | Trigonometry Calc | CNC Lathe Simulator |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 3.0 (2 ratings) | 4.2 (14 ratings) — better |
| Positive reviews | 0.0% of reviews | 54.7% of reviews — better |
| Number of ratings | 2 | 14 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.6 |
| Further details — not scored | ||
| Size | 8 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Bo Kalvslund | 旭 陈 |
Customer experience
Trigonometry Calc
CNC Lathe Simulator
In-app purchases
Trigonometry Calc
- Premium$0.99
CNC Lathe Simulator
No in-app purchases
Questions
Is Trigonometry Calc free?
Is CNC Lathe Simulator free?
Which has better reviews, Trigonometry Calc or CNC Lathe Simulator?
Do Trigonometry Calc or CNC Lathe Simulator have ads?
Which is updated more often, Trigonometry Calc or CNC Lathe Simulator?
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