# Sailing School vs Unit Circle Calculator PRO

The clearest difference is review sentiment: Unit Circle Calculator PRO at 100% against Sailing School's 48%. Unit Circle Calculator PRO also leads on ads (none vs shown) and rating (4.7 vs 4.4). Sailing School's advantage is price (Free vs $1.99). On ratings volume, in-app purchases, monetization model and device support there is nothing between them.

Sailing School is free to download; Unit Circle Calculator PRO costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Unit Circle Calculator PRO holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 10 and 25 respectively. Written reviews point the same way: 48% of Sailing School's written reviews are positive against 100% of Unit Circle Calculator PRO's.

Sailing School ships an update every 4 months, Unit Circle Calculator PRO monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sailing School | Unit Circle Calculator PRO |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.4 (10 ratings)](https://appshunter.io/ios/app/sailing-school/id500663978/reviews) | **[4.7 (25 ratings)](https://appshunter.io/ios/app/unit-circle-calculator-pro/id1606376541/reviews)** |
| Number of ratings | 10 | **25** |
| Positive reviews | 47.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 38 MB | 181 MB |
| Requires iOS | **14.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nautica SIA](https://appshunter.io/developer/486201925) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Sailing School

[App page](https://appshunter.io/ios/app/sailing-school/id500663978)

Learn to sail with this comprehensive, interactive app. Access a vast library of lessons, videos, and quizzes covering all essential aspects of sailing, from basics to advanced navigation. Track your progress and prepare for tests with engaging content.

**Highlights:** Interactive lessons with graphics and audio, Extensive video library (6+ hours), Animated visuals for concepts, Knowledge testing exams, Progress tracking statistics, Offline access to content

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Circle Calculator PRO

[App page](https://appshunter.io/ios/app/unit-circle-calculator-pro/id1606376541)

Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats including negative values, decimals, fractions, and pi. Save, share, and revisit past calculations.

**Highlights:** Unit circle visualization, Step-by-step calculation, Diagrams and animations, Supports negative values, decimals, fractions, and π, Calculation history, Shareable solutions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sailing School free?

Sailing School is free to download, with no in-app purchases.

### Is Unit Circle Calculator PRO free?

Unit Circle Calculator PRO costs $1.99, with no in-app purchases.

### Which has better reviews, Sailing School or Unit Circle Calculator PRO?

Unit Circle Calculator PRO is rated higher. Sailing School averages 4.4 out of 5 from 10 ratings, while Unit Circle Calculator PRO averages 4.7 from 25 ratings.

### Do Sailing School or Unit Circle Calculator PRO have ads?

Sailing School shows ads; Unit Circle Calculator PRO does not.

### Which is updated more often, Sailing School or Unit Circle Calculator PRO?

Sailing School ships an update every 4 months, and Unit Circle Calculator PRO monthly. Most recently, Sailing School was updated on October 23, 2026 and Unit Circle Calculator PRO on October 24, 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.*