# Nautilus GPS — user reviews

> 4 indexed App Store user reviews of Nautilus GPS by Icarus Aviation Ltd, rated 1.90/5 from 12 ratings.

- Source: https://appshunter.io/ios/app/nautilus-gps/id1176272486/reviews
- App overview in markdown: https://appshunter.io/ios/app/nautilus-gps/id1176272486.md
- Rating breakdown: 5★ 2 · 4★ 0 · 3★ 1 · 2★ 1 · 1★ 8

## Most critical reviews (4 lowest-rated)

### 1/5 — App program failef

*2023-05-25*

Unit went through the programming sequence and received the “flash” acknowledgment from the GPS but “Start” button did not appear, I guess on the app. Deleting the app.

### 1/5 — Couldn’t get to work on newer devices starting with 2

*2022-08-21*

I watched two YouTube independent videos on how to do this (Ron Tiah and Abyss Scuba Diving). The app actually has instructions that show the digit is supposed to look like “1XXXX”. But my device SN starts with ‘2’.  About two seconds after the programming the device is supposed to flash twice but mine never did. I suspect it might have something to do the SN not starting with ‘2’. I actually tried changing my first digit to a ‘1’ but it said the serial number was invalid.

### 1/5 — Cannot enter serial number

*2022-02-28*

I have owned my Nautilus Lifeline for a few years and I really like it. Tried to use the app but t it wouldn’t take the serial number… Just another worthless app I suppose!

### 5/5 — Needs update for iOS 15

*2021-12-16*

Please update this app to improve compatibility with iOS 15

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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 2026-06-01.*