Comparison

Ocean Watch vs Sun ETA

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

Head to head
About

Ocean Watch

Access tide predictions for over 3,300 stations across the US and Caribbean. Visualize tide data with stunning graphics and an interactive almanac. Plan your activities with offline access to predictions and custom notes.

Highlights
  • 3,300+ tide stations
  • Stunning graphics and visualizations
  • Offline tide predictions
  • Interactive almanac
  • Integrated station map
  • Custom notes and images
Features
Read full description

Find your tide. Ocean Watch tracks tides at 3,300+ stations on every US coast, on iPhone, iPad, Mac and Apple Watch. It works offline. • Offline forecasts. Decades of data and the prediction engine are built in, so the tide is there when the signal isn't. • Tidemarks. Set a height so you know when the water will float your dock or expose your beach. • Beauty with insight. Interactive graphs and visualizations that let you feel the flow over time. • Plan ahead. The Almanac lets you travel into the future and pick your window for fishing, sailing, surfing or paddling. • The big picture. The Weeks at a Glance view lets you see the monthly trends as the moon waxes and wanes. • The little picture. Apple Watch, no iPhone needed. Every station on your wrist, with always-on complications. • Widgets. The tide on your Home Screen and everywhere else. • Area Map. See what's here and where you're going. • Share and export. Send the current tide as a picture, or export a week as CSV or PDF. • Your place is special. We've supplied gorgeous local photographs for many areas, and you can add your own. Stations outside the US and Caribbean have limited support.

About

Sun ETA

Features
Read full description

Know exactly when the sun rises and sets, wherever you are. Sun ETA gives you a live countdown to the next sunrise or sunset, calculated in real-time based on your current location. Whether you're a photographer chasing golden hour, a runner planning an evening jog, or just someone who loves watching the sun go down, Sun ETA keeps you informed at a glance.

Screenshots

Ocean Watch4 screens
Sun ETA3 screens

Verdict

The call

The clearest difference is ads: Ocean Watch at none against Sun ETA's shown. Ocean Watch also leads on device support (4 vs 2). Sun ETA's advantage is update cadence (daily vs every 9 months) and iOS requirement (15.1 vs 26.0). On price 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

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

Ocean Watch ships an update every 9 months, Sun ETA daily. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Ocean Watch versus Sun ETA: the parameters behind the verdict, then further details
ParameterOcean WatchSun ETA
PriceFreeFree
Rating4.8 (2.7K ratings) — better—
Positive reviews73.6% of reviews—
Number of ratings2.7K — better—
Update frequencyEvery 9 monthsDaily — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size137 MB31 MB
Age rating4+4+
DeveloperBlue Bright Labs LLCSkiily LLC

Bugs and requests

Ocean Watch

Reported bugs

4 issues
  • App crashes when trying to open tide station details
  • Tide data sometimes stuck on wrong location
  • Apple Watch app not syncing or updating correctly
  • Issues with the app's widget not displaying accurate information

Requested features

5 requests
  • Add water temperature and wind speed data
  • Improve Apple Watch complication to show more detailed tide information
  • Expand coverage to more locations, especially in Canada and other countries
  • Add ability to set tide alerts or notifications
  • Improve stability and reliability to reduce crashes

Sun ETA

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Ocean Watch

No in-app purchases

None

Sun ETA

No in-app purchases

Questions

Is Ocean Watch free?
Ocean Watch is free to download, with no in-app purchases.
Is Sun ETA free?
Sun ETA is free to download, with no in-app purchases.
Do Ocean Watch or Sun ETA have ads?
Sun ETA shows ads; Ocean Watch does not.
Which is updated more often, Ocean Watch or Sun ETA?
Ocean Watch ships an update every 9 months, and Sun ETA daily. Most recently, Ocean Watch was updated on November 1, 2026 and Sun ETA on October 31, 2026.

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