Trigonometry Hong Kong vs Trig Function(Math Drills)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trigonometry Hong Kong
This app provides a comprehensive guide to trigonometric formulas essential for Hong Kong university entrance exams. It covers a wide range of formulas, from basic sine and cosine to more advanced compound and subsidiary angle identities.
- Compound Angle Formulas
- Subsidiary Angle Formulas
- Double Angle Formulas
- Triple Angle Formulas
- Half Angle Formulas
- Product-To-Sum Formulas
- Sum-To-Product Formulas
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Trigonometric Compound Angle formulas used in the public examination for the entrance of the universities in Hong Kong. Contents :- 1. Sine Formula 2. Cosine Formula 3. Tangent Formula 4. Compound Angle Formula 5. Subsidiary Angle Formula 6. Double Angle Formula 7. Triple Angle Formula 8. Half Angle Formula 9. T Formula 10. Product-To- Sum Formula 11. Sum-To- Product Formula 12. Principal Value 13. General solution For Trigonometric Functions
Trig Function(Math Drills)
Practice trigonometric functions offline with automated question generation and correctness judgment. Review tips and answers, and compete in Challenge Mode to improve your rank. Ideal for students needing to master trigonometry.
- Offline learning
- Automated question generation
- Correctness judgment
- Tips and answers
- Challenge Mode
- Rank improvement
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You can learn Trigonometric Function offline. Since the question generation and the correctness judgment of the answer are automatically performed, you can work on the drill learning as many times as you like. You can also see tips and answers. Score high in Challenge Mode to improve your rank!!
Screenshots
Verdict
The clearest difference is update cadence: Trig Function(Math Drills) at every 4 days against Trigonometry Hong Kong's every 34 months. Trig Function(Math Drills) also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Trigonometry Hong Kong ships an update every 34 months, Trig Function(Math Drills) every 4 days. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | Trigonometry Hong Kong | Trig Function(Math Drills) |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 34 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | See Yan Wong | 郷 田村 |
Customer experience
Trigonometry Hong Kong
Trig Function(Math Drills)
In-app purchases
Trigonometry Hong Kong
No in-app purchases
Trig Function(Math Drills)
No in-app purchases
Questions
Is Trigonometry Hong Kong free?
Is Trig Function(Math Drills) free?
Do Trigonometry Hong Kong or Trig Function(Math Drills) have ads?
Which is updated more often, Trigonometry Hong Kong or Trig Function(Math Drills)?
Other comparisons
