# Math Decoder vs Trig Function(Math Drills)

The clearest difference is price: Trig Function(Math Drills) at Free against Math Decoder's $0.99. Trig Function(Math Drills) also leads on update cadence (every 4 days vs every 36 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Trig Function(Math Drills) is free to download; Math Decoder costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Decoder ships an update every 36 months, Trig Function(Math Drills) every 4 days. The most recent releases landed on September 20, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Math Decoder | Trig Function(Math Drills) |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 28 MB | 28 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [郷 田村](https://appshunter.io/developer/1574588679) |

## What reviewers say

### Math Decoder

[App page](https://appshunter.io/ios/app/math-decoder/id1387526040)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trig Function(Math Drills)

[App page](https://appshunter.io/ios/app/trig-functionmath-drills/id1670535500)

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.

**Highlights:** Offline learning, Automated question generation, Correctness judgment, Tips and answers, Challenge Mode, Rank improvement

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Decoder free?

Math Decoder costs $0.99, with no in-app purchases.

### Is Trig Function(Math Drills) free?

Trig Function(Math Drills) is free to download, with no in-app purchases.

### Do Math Decoder or Trig Function(Math Drills) have ads?

Neither Math Decoder nor Trig Function(Math Drills) shows ads.

### Which is updated more often, Math Decoder or Trig Function(Math Drills)?

Math Decoder ships an update every 36 months, and Trig Function(Math Drills) every 4 days. Most recently, Math Decoder was updated on September 20, 2026 and Trig Function(Math Drills) on August 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*