Gobius vs See Sailing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gobius
This application works with specific sensors to monitor fluid levels in tanks, displaying volume in percentages and liters. It provides installation guides, tank calculators for various shapes, and visual level indicators.
- Fluid level monitoring
- Volume display in % and liters
- Installation guides
- Tank calculator for non-rectangular tanks
- Visual fluid level indicators
- Waterproof sensor compatibility
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This app is designed to be used with the Gobius C and Gobius Pro sensors. The sensor is measuring sleeplessly from empty to full tank for all kinds of fluids. It gives you to volume in % and liters. The sensor is placed direct on top of the tank on plastic and glass fiber tanks. On metal tanks, you need a hole, at least 40 mm. Gobius C is ready to use; everything is in the box. You get the sensor with a 3M tape, a Quick Guide, 3M tissue, a cable to connect to a power source (12-24 V), and to use for external devices, like warning lights/buzzers, control systems, and analog gauges. The Quick Guide gives you a brief overview of installing the sensor. And the sensor is waterproof IP66. In the app you have everything; Installation Guide with instructions for mounting the sensor on the tank, setup/calculation and displaying the fluid level in different colors. The app has also a Tank Calculator for non-rectangular tanks, such as round and triangular tanks. Installation should take no longer than 15 minutes
See Sailing
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This is the IOS front end for See Sailing. Collects and uploads data from the See Sailing N2K gateway and NMEA over WiFi.
Screenshots
Verdict
Gobius and See Sailing are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Gobius ships an update monthly, See Sailing every 2 months. The most recent releases landed on July 22, 2026 and September 9, 2026 respectively.
| Parameter | Gobius | See Sailing |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 30 MB |
| Age rating | 17+ | 4+ |
| Developer | Gobius Sensor Technology AB | Atomic Droplet |
In-app purchases
Gobius
No in-app purchases
See Sailing
No in-app purchases
