# Trig Formula Unit Circle2026 — Formulas and unit circle drill

> Formulas and unit circle drill (iPhone/iPad app by hao du.)

- Source: https://appshunter.io/ios/app/trig-formula-unit-circle2026/id6780888265 (this page in markdown: same URL + `.md`)
- Developer: [hao du](https://appshunter.io/developer/1454457703)
- Category: Education
- Price: $0.29
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2026-06-18
- Data updated: 2026-08-10
- User reviews in markdown: https://appshunter.io/ios/app/trig-formula-unit-circle2026/id6780888265/reviews.md

## What is Trig Formula Unit Circle2026?

Trig Formula is an offline trigonometry review tool designed for high school students and self learners. It focuses on common test topics such as trigonometric values, reduction formulas, the unit circle, and radian-degree conversion. No login, internet connection, account registration, cloud sync, social features, or personal data collection is required.

Core features include quick lookup for common trigonometric formulas, organized by angle, radian, quadrant, and topic; visual unit circle practice for memorizing special-angle values; step-by-step reduction formula drills with accuracy and mistake tracking; radian-degree conversion and quadrant judgment exercises; and a local mistake book with mastery statistics stored only on your device.


## Version history (last 2 releases)

### 1.1 — 2026-08-04

Added a feedback feature.

### 1.0 — 2026-06-18

No release notes.

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All apps by hao du: https://appshunter.io/developer/1454457703

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-10.*