Pocket Slide Rule Expert vs Trigonometry 360
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pocket Slide Rule Expert
Learn to use a classic slide rule with this app. It offers precise calculations and an "auto-slide-rule" mode to demonstrate operations. Save and reuse slider positions for frequent calculations.
- Classic slide rule simulation
- Auto-slide-rule demonstration mode
- Precise cursor and slider control
- Save and reuse slider positions ('Snaps')
- 19 basic operations supported
- Multiplication, division, powers, logs, trig functions
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When it comes to nerd street cred, having a slide rule is not enough. You need to know how to use it! Hence, Pocket Slide Rule Expert. This has the style of a classic rule, including great precision, but can also show you how to DO calculations. Learn simply by watching auto-slide-rule mode. Select from 19 different basic operations, including: -Multiplication and Division -Squares, Cubes, arbitrary powers -Logarithms, both natural and base 10 -Trigonometric and reverse trig functions Think you can't perform precise calculations using a touch screen? Not at all! Try the newly-added "brakes" button. By holding it down, you can move the cursor and slider with extreme precision. Are you a power user? Then check out the 'Snaps.' With the click of a button, quickly save a slider position -- and reuse it time and time again. Multiply by the square root of 2 a lot? Make a button for it! Speed, accuracy, and a teacher right there with you.
Trigonometry 360
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Trigonometry 360 helps you understand trigonometry visually instead of simply memorizing formulas. Explore angles on an interactive unit circle and instantly see how the coordinates, quadrant, sine, cosine, tangent and cotangent values change. KEY FEATURES • Interactive Unit Circle Drag the point around the unit circle to change the angle in real time. View the angle in degrees and radians, point coordinates, quadrant information and live trigonometric values. • Trigonometric Value Table Browse exact trigonometric values for standard angles. Filter the table by sine, cosine, tangent or cotangent and save useful values to your favorites. • Clear Learning Content Learn fundamental concepts through understandable explanations, examples and helpful tips. Explore degrees and radians, the unit circle, quadrant signs, reference angles and trigonometric relationships. • Trigonometric Identities Quickly access fundamental identities, sum and difference formulas, double-angle identities and other frequently used relationships. • Advanced Quizzes Test your knowledge with different question categories. Review explanations, retry incorrect questions and track your progress. • Angle Converter Convert between degrees and radians. Find the normalized angle, quadrant and reference angle, then display the result on the unit circle. For example, enter 750° to see its equivalent angle between 0° and 360°, radian value, quadrant and reference angle. • Natural Trigonometric Search Search using expressions such as: sin(45) sin 45° cos π/3 tan 0.5 rad sin -30 cot 450 Trigonometry 360 recognizes the expression and displays the relevant trigonometric result. • Favorites Save frequently used trigonometric values and access them quickly whenever you need them. • Offline Access Use the core lessons, quizzes, value tables and calculation tools without an internet connection. Trigonometry 360 is designed for students, teachers and anyone who wants to learn, practice or review trigonometry in a visual and understandable way. Supported languages: English, Turkish, Spanish and Arabic.
Screenshots
Verdict
The clearest difference is price: Trigonometry 360 at Free against Pocket Slide Rule Expert's $0.99. Trigonometry 360 also leads on update cadence (monthly vs every 4 months). Pocket Slide Rule Expert's advantage is iOS requirement (9.0 vs 15.1). On ads, in-app purchases 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
Trigonometry 360 is free to download; Pocket Slide Rule Expert costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pocket Slide Rule Expert ships an update every 4 months, Trigonometry 360 monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Pocket Slide Rule Expert | Trigonometry 360 |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 16 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | TestTubeGames | Baran Polat |
In-app purchases
Pocket Slide Rule Expert
No in-app purchases
Trigonometry 360
No in-app purchases
Questions
Is Pocket Slide Rule Expert free?
Is Trigonometry 360 free?
Do Pocket Slide Rule Expert or Trigonometry 360 have ads?
Which is updated more often, Pocket Slide Rule Expert or Trigonometry 360?
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