# TriCalc – Triangle Solver — Auto-solve sides and angles

> Auto-solve sides and angles (iPhone/iPad app by Keita Ogasawara.)

- Source: https://appshunter.io/ios/app/tricalc-triangle-solver/id6762830339 (this page in markdown: same URL + `.md`)
- Developer: [Keita Ogasawara](https://appshunter.io/developer/1524965899)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 23 MB
- Languages: English
- Released: 2026-04-27
- Data updated: 2026-06-19
- User reviews in markdown: https://appshunter.io/ios/app/tricalc-triangle-solver/id6762830339/reviews.md

## What is TriCalc?

Enter any combination of sides and angles, and Triangle Calculator instantly solves the missing values, draws the triangle,
and shows you the full results.

FEATURES
· Auto-solve from any valid input — sides (a, b, c) and angles (A, B, C)
· Calculates area, perimeter, and triangle classification (acute / right / obtuse, equilateral / isosceles / scalene)
· Supports multiple solving methods: Law of Cosines (SSS, SAS), Law of Sines (SSA, AAS/ASA)
· Detects and handles the ambiguous SSA case
· Real-time triangle visualization

PREMIUM (one-time purchase)
· Unlimited save & history — revisit any triangle anytime
· Ad-free experience
· Step-by-step solution with formulas

Whether you're studying trigonometry, working on a construction project, doing land surveying, or building a game, Triangle
Calculator gives you fast and accurate results.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium | $4.99 | one-time |



## Version history (last 3 releases)

### 1.2 — 2026-05-28

add Chinese language

### 1.1 — 2026-04-30

・bug fix

### 1.0 — 2026-04-27

No release notes.

## More apps by Keita Ogasawara

- [中学受験 まるごと歴史帳660](https://appshunter.io/ios/app/660/id1524965897)
- [中学受験 まるごと歴史帳660 広告あり版](https://appshunter.io/ios/app/660/id1528524973)
- [中学受験 時事問題 重大ニュース](https://appshunter.io/ios/app/id1541461712)
- [ずぼら家計簿](https://appshunter.io/ios/app/id6756205429)
- [SmartRecipe: AI fridge recipes](https://appshunter.io/ios/app/smartrecipe-ai-fridge-recipes/id6762037370)
- [中学受験漢字ドリル](https://appshunter.io/ios/app/id6762507282)

All apps by Keita Ogasawara: https://appshunter.io/developer/1524965899

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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 2026-06-19.*