# Trigonometry Quick Reference vs Tangent Lines to Circles Calc

The clearest difference is review sentiment: Trigonometry Quick Reference at 100% against Tangent Lines to Circles Calc's 0%. Trigonometry Quick Reference also leads on rating (5.0 vs 3.0) and update cadence (every 8 months vs every 23 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Trigonometry Quick Reference costs $0.99 and Tangent Lines to Circles Calc $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trigonometry Quick Reference holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Trigonometry Quick Reference's written reviews are positive against 0% of Tangent Lines to Circles Calc's.

Trigonometry Quick Reference ships an update every 8 months, Tangent Lines to Circles Calc every 23 months. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Trigonometry Quick Reference | Tangent Lines to Circles Calc |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trigonometry-quick-reference/id689382174/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/tangent-lines-to-circles-calc/id1630300212/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 23 months |
| Monetization | Paid | Paid |
| Size | 10 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Trigonometry Quick Reference

[App page](https://appshunter.io/ios/app/trigonometry-quick-reference/id689382174)

This app offers a concise overview of fundamental trigonometry concepts, including sine, cosine, tangent, and inverse functions. It serves as a quick reference tool for students to review key ideas and test their understanding with quizzes.

**Highlights:** Overview of basic trigonometry concepts, Explanations of sine, cosine, and tangent, Information on inverse functions, Unit circle, ranges, and domains, Quizzes to measure understanding, Detailed explanations on key topics

**Features:** macOS Compatibility

**In-app purchases:** none


### Tangent Lines to Circles Calc

[App page](https://appshunter.io/ios/app/tangent-lines-to-circles-calc/id1630300212)

This app instantly solves all types of tangent line problems for circles with interactive graphs and step-by-step solutions. It supports various calculation modes, coordinate systems, and is built for accuracy, making it ideal for students and professionals.

**Highlights:** Three powerful calculation modes, Live interactive graph visualization, Full step-by-step solutions, Cartesian & Polar coordinate support, High precision calculations, Slope-intercept and general form equations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry Quick Reference free?

Trigonometry Quick Reference costs $0.99, with no in-app purchases.

### Is Tangent Lines to Circles Calc free?

Tangent Lines to Circles Calc costs $3.99, with no in-app purchases.

### Which has better reviews, Trigonometry Quick Reference or Tangent Lines to Circles Calc?

Trigonometry Quick Reference is rated higher. Trigonometry Quick Reference averages 5.0 out of 5 from 1 ratings, while Tangent Lines to Circles Calc averages 3.0 from 1 ratings.

### Do Trigonometry Quick Reference or Tangent Lines to Circles Calc have ads?

Neither Trigonometry Quick Reference nor Tangent Lines to Circles Calc shows ads.

### Which is updated more often, Trigonometry Quick Reference or Tangent Lines to Circles Calc?

Trigonometry Quick Reference ships an update every 8 months, and Tangent Lines to Circles Calc every 23 months. Most recently, Trigonometry Quick Reference was updated on October 17, 2026 and Tangent Lines to Circles Calc on September 30, 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.*