Comparison

ISS Tracker vs Sleep Ride

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ISS Tracker

Monitor the International Space Station's live position and vital telemetry data in real-time. Track its orbit, altitude, velocity, and internal environmental systems. Ideal for space enthusiasts and students interested in space exploration.

Highlights
  • Real-time ISS position tracking
  • Interactive world map
  • Altitude and velocity data
  • Comprehensive telemetry monitoring
  • Environmental and power system data
  • Dark mode support
Features
Read full description

Find out when the International Space Station flies over you and exactly where to look. On a good night it’s brighter than any star. YOUR NEXT PASS, IN PLAIN WORDS “Tonight at 8:05 PM. Look west, low.” Each pass also says how long it’s visible and how bright it is, and has a round sky chart that shows its path, from where it appears to where it fades. See 14 days of passes, and the cloud forecast for the next ones. ALERTS FOR GOOD PASSES Get a heads-up a few hours before a good pass, and an alert 5 minutes before it starts. A good pass climbs at least 30° above the horizon, or is bright and long. If two weeks have none, you get alerts for the best low passes instead. You can turn on alerts for every visible pass in the app’s settings. A Live Activity counts down on your Lock Screen and in the Dynamic Island. FIND IT IN THE SKY Hold your phone up and follow the pointer to the station. Saw a bright, moving light? Ask “Was that the ISS?” and get a straight answer. No telescope needed. WHERE IS THE ISS RIGHT NOW? See it on a 3D globe, with the day and night sides of Earth, or on a live map with the ground track of its orbit. You can add Tiangong, China’s space station, and get its passes too. WHO’S UP THERE See the crew on board, and the next launches, dockings and spacewalks. ALWAYS ONE GLANCE AWAY Widgets show your next pass on the Home Screen and Lock Screen. A Control Center button opens the sky pointer. PRIVATE AND SIMPLE No account needed. Every pass is worked out on your phone, and your exact location is never sent to us. Apple Weather and Apple Maps use it for the cloud forecast and the place name. For iPhone and iPad.

About

Sleep Ride

Features
Read full description

Never miss your stop again — the commuter's nap guardian Ever wanted to close your eyes on the bus or train, but couldn't risk waking up three stops too late? Sleep Tight On Board exists for exactly that anxiety — and now there's a thoroughly jaded salted fish napping alongside you. Why this one? Location-precise wake-up. A high-accuracy geofence triggers a strong vibration and alarm the moment you enter your destination zone, with speed-aware early warning so fast stretches don't catch you out. Battery-smart tracking. GPS runs light while you're far out and only switches to high accuracy as you approach — long commutes included. Signal-loss protection. In tunnels and underground sections where GPS drops, it estimates from your last known speed. It would rather wake you early than let you overshoot. Raise a jaded salted fish. Waking up on time and getting off on time is how you feed it. It grows, changes expression, judges you, and reluctantly says something whenever you dismiss an alarm. Six moods with 120 lines each — 720 in total, written from scratch in all five languages, not translated. 76 accessories. One drawn automatically per level, across head, face, chest and hand, in five rarities. Draws are earned in-app for free only — never sold, never purchasable — and the odds are fully disclosed. Play with it, or be woken by it. Whack-a-fish, rock-paper-scissors, tic-tac-toe and gomoku, three games a day. Any of them can be set as your wake-up challenge: beat the fish or the alarm keeps ringing. Daily tarot. The full public-domain Rider-Waite deck. The fish comments based on the card and its own mood. The worst fortune grants the most EXP — your bad luck is its nutrition. Home screen widget & Dynamic Island. Start monitoring a saved place with one tap and watch the remaining distance live, without opening the app. Core features: Draw your wake-up radius directly on the map — works for metro, bus and rail Background monitoring with the screen off, so you can actually put the phone down Custom alarm sound from your own MP3s Long-press shortcuts, time alarms, white-noise sleep mode

Screenshots

ISS Tracker4 screens
Sleep Ride4 screens

Verdict

The call

The clearest difference is ads: ISS Tracker at none against Sleep Ride's shown. Sleep Ride's advantage is iOS requirement (14.0 vs 26.0). On price, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ISS Tracker ships an update weekly, Sleep Ride every 3 days. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
ISS Tracker versus Sleep Ride: the parameters behind the verdict, then further details
ParameterISS TrackerSleep Ride
PriceFreeFree
Rating4.8 (20 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings20 — better—
Update frequencyWeeklyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.014.0 — better
Further details — not scored
Size15 MB91 MB
Age rating4+4+
DeveloperLucent Enterprises Ltd.Longhong Chiang

In-app purchases

None

ISS Tracker

No in-app purchases

None

Sleep Ride

No in-app purchases

Questions

Is ISS Tracker free?
ISS Tracker is free to download, with no in-app purchases.
Is Sleep Ride free?
Sleep Ride is free to download, with no in-app purchases.
Do ISS Tracker or Sleep Ride have ads?
Sleep Ride shows ads; ISS Tracker does not.
Which is updated more often, ISS Tracker or Sleep Ride?
ISS Tracker ships an update weekly, and Sleep Ride every 3 days. Most recently, ISS Tracker was updated on November 4, 2026 and Sleep Ride on October 25, 2026.

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