# tcSpeeds vs Celestial Nav

The clearest difference is rating: tcSpeeds at 4.9 against Celestial Nav's 4.3. tcSpeeds also leads on review sentiment (100% vs 64%) and monetization model (free vs free with in-app purchases). Celestial Nav's advantage is update cadence (every 3 weeks vs every 7 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. tcSpeeds sells 1 one-off in-app purchase and Celestial Nav sells 6 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

tcSpeeds holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 10 and 10 respectively. Written reviews point the same way: 100% of tcSpeeds's written reviews are positive against 64% of Celestial Nav's.

tcSpeeds ships an update every 7 months, Celestial Nav every 3 weeks. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | tcSpeeds | Celestial Nav |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (10 ratings)](https://appshunter.io/ios/app/tcspeeds/id1441225371/reviews)** | [4.3 (10 ratings)](https://appshunter.io/ios/app/celestial-nav/id1569880598/reviews) |
| Number of ratings | 10 | 10 |
| Positive reviews | **100.0% of reviews** | 64.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 20 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [transitional continuum](https://appshunter.io/developer/1441225370) | [Skytip LLC](https://appshunter.io/developer/1569880600) |

## What reviewers say

### tcSpeeds

[App page](https://appshunter.io/ios/app/tcspeeds/id1441225371)

This app provides advanced sailing performance metrics using your device's GPS and sensors. It offers detailed speed, wind, and directional measurements, along with a proprietary performance index. Easily track your progress and compare it with others, with zero setup required.

**Highlights:** Advanced speed and velocity measurements, Proprietary Pilot Performance Index (PPI), Wind measurement with optional sensor, Waypoint navigation and tracking, Apple Watch extension, Real-time performance alerts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Performance Features | $2.99 | one-time |


### Celestial Nav

[App page](https://appshunter.io/ios/app/celestial-nav/id1569880598)

This app provides tools for celestial navigation, offering computations for celestial bodies and sight reductions. It includes an offline perpetual almanac and allows for quick capture of observation data for accurate course adjustments.

**Highlights:** Celestial navigational computations, Offline perpetual almanac, Quick celestial observation data capture, High accuracy sight reductions, Sight planning and reduction tools, Celestial fix computations

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version | $1.99 | per month |
| PRO Version | $7.99 | per 6 months |
| PRO Version | $9.99 | per year |
| 7 Day Trial License | $0.99 | one-time |
| 30 Day Trial License | $2.99 | one-time |
| PRO Version Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is tcSpeeds free?

tcSpeeds is free to download, with in-app purchases available.

### Is Celestial Nav free?

Celestial Nav is free to download, with in-app purchases available.

### Which has better reviews, tcSpeeds or Celestial Nav?

tcSpeeds is rated higher. tcSpeeds averages 4.9 out of 5 from 10 ratings, while Celestial Nav averages 4.3 from 10 ratings.

### Do tcSpeeds or Celestial Nav have ads?

Neither tcSpeeds nor Celestial Nav shows ads.

### Which is updated more often, tcSpeeds or Celestial Nav?

tcSpeeds ships an update every 7 months, and Celestial Nav every 3 weeks. Most recently, tcSpeeds was updated on September 30, 2026 and Celestial Nav on October 17, 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.*