# First Mate vs Tentsile Triangulator

The clearest difference is price: Tentsile Triangulator at Free against First Mate's $19.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Tentsile Triangulator is free to download; First Mate costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

First Mate ships an update every 3 weeks, Tentsile Triangulator monthly. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | First Mate | Tentsile Triangulator |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/first-mate/id1603120795/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Paid | — |
| Size | 3 MB | 1 MB |
| Requires iOS | 14.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Ricciardo](https://appshunter.io/developer/1585527362) | [Karl Arthur](https://appshunter.io/developer/1631478991) |

## What reviewers say

### First Mate

[App page](https://appshunter.io/ios/app/first-mate/id1603120795)

This app uses advanced marine engineering calculations to provide boat owners with real-time estimates of vessel range, fuel consumption, and engine performance. It helps plan trips and make adjustments on the go, offering a more affordable alternative to expensive integrated systems.

**Highlights:** Real-time range and fuel calculations, Engine output estimation (RPM, BHP, burn rate), Accounts for drag, weight, and environmental factors, Customizable vessel and engine specifications, Trip planning and on-the-go updates, Estimates displacement and fuel capacity

**Features:** macOS Compatibility

**In-app purchases:** none


### Tentsile Triangulator

[App page](https://appshunter.io/ios/app/tentsile-triangulator/id1631764282)

**In-app purchases:** none


## Frequently asked questions

### Is First Mate free?

First Mate costs $19.99, with no in-app purchases.

### Is Tentsile Triangulator free?

Tentsile Triangulator is free to download, with no in-app purchases.

### Do First Mate or Tentsile Triangulator have ads?

Neither First Mate nor Tentsile Triangulator shows ads.

### Which is updated more often, First Mate or Tentsile Triangulator?

First Mate ships an update every 3 weeks, and Tentsile Triangulator monthly. Most recently, First Mate was updated on November 3, 2026 and Tentsile Triangulator on October 27, 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.*