Spacetime Clock vs Nauticus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spacetime Clock
Explore celestial mechanics and terrestrial positioning with this app. Visualize moon phases, Earth's rotation, and your location's latitude and longitude. It also includes a compass and level meter for your device.
- Moon phases visualization
- Earth rotation and revolution simulation
- Latitude and longitude display
- Compass functionality
- iPhone level meter
- Customizable background colors
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Time, calendars, the movements and positions of celestial bodies, and direction are all closely connected. This app brings together time and place in one view. Alongside the time and date, it shows the phases of the Moon, Earth’s rotation and orbit, latitude and longitude, compass direction, and the iPhone’s level. It lets you see and feel where you are in time and space at a glance. [Top of Screen] MOON: Moon phase (lunar age 0–29) HOURS: Hours (24-hour cycle) MINUTES: Minutes (60-minute cycle) SECONDS: Seconds (60-second cycle) [Center of Screen] The year, month, date, hour, minute, day of the week, and second are displayed. Earth completes one circuit around the center of the screen in 365 days (366 in a leap year). The display uses Earth’s axial tilt to approximate the amount of daylight at that time of year. It does not show precise sunrise or sunset times. The Earth and Moon graphics change depending on whether your current latitude is in the Northern or Southern Hemisphere. [Bottom of Screen] LATITUDE: Latitude (−90° to +90°; positive values indicate north, negative values south) LONGITUDE: Longitude (−180° to +180°; positive values indicate east, negative values west) COMPASS: Direction of north LEVEL: Level, measured along the iPhone’s X and Y axes Choose from four background colors: Space, Midnight, Twilight, and Sky Blue.
Nauticus
An interactive map companion for Subnautica players. Easily locate biomes, resources, wrecks, and points of interest to aid exploration and survival. Designed for quick access while playing, it helps both new and experienced players navigate the underwater world.
- Interactive underwater map
- Biome and location references
- Resource and point-of-interest tracking
- Wreck and entrance markers
- Simple navigation layout
- Quick use while playing
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Subnautica Map is an unofficial companion app designed to help you explore, navigate, and survive the depths. Find key locations, biomes, resources, wrecks, entrances, and points of interest with an easy-to-use interactive map. Whether you’re searching for materials, planning your next dive, or trying not to get lost in the deep, Subnautica Map gives you a cleaner way to track the world around you. Features: • Interactive underwater map • Biome and location references • Resource and point-of-interest tracking • Wrecks, entrances, and important areas • Simple navigation-focused layout • Built for quick use while playing Perfect for new players learning the ocean and experienced survivors planning efficient routes. Disclaimer: This is an unofficial companion app and is not affiliated with, endorsed by, or sponsored by Unknown Worlds Entertainment or Krafton. Subnautica is a trademark of its respective owner. Standard apple EULA
Screenshots
Verdict
The clearest difference is review sentiment: Spacetime Clock at 41% against Nauticus's 0%. Nauticus's advantage is monetization model (free vs paid) and device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.
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.
| Parameter | Spacetime Clock | Nauticus |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) — better | — |
| Positive reviews | 40.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | y-design | Colby Maloy |
Customer experience
Spacetime Clock
Nauticus
In-app purchases
Spacetime Clock
No in-app purchases
Nauticus
No in-app purchases








