Comparison

Tide Charts vs SeaState

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

Head to head
About

Tide Charts

Access worldwide tidal estimates, lunar data, and weather forecasts. Plan outdoor adventures with ease using current radar and offline predictions. Supports Apple Watch and includes a Today Extension for quick access.

Highlights
  • Worldwide tidal estimates
  • Lunar data
  • Weather forecast
  • Current radar
  • Offline predictions
  • Favorite station management
  • Apple Watch support
Features
Currently charting
Read full description

Finally a beautiful and simple way to view tides on your mobile device! In addition to worldwide tidal estimates at tide stations, you can see the lunar data, weather forecast, and current radar making your next outdoor adventure as easy to plan as possible. By default, the application will pick the closest tide station to you, but picking a different tide or weather station is as easy as viewing a map of your current location. You can also setup and quickly switch between many stored favorite stations if you need to. No internet access while outdoors? No problem. This app has been designed to give you tidal and lunar predictions without internet access! Tides at a glance • A clear chart of the whole day, with the current height marked and daylight hours shaded (lunar rise and set is the small gray bar on the bottom) • The times and heights of every high and low tide • Swipe left or right to move through the days, or pick a date on the calendar • Swipe down to see sunrise, sunset, moonrise, moonset and the phase of the moon • Subscribe for tide alerts that notify you before a chosen high or low tide • Home Screen widgets with today's tides and the next tide Worldwide Tidal Stations • Nearly 8,000 stations, from the coasts of the United States and Canada to Europe, Japan, Korea, Taiwan, Southeast Asia, Australia, New Zealand, South America and the Pacific islands • Find the nearest station with one tap, search by name, or browse the map, with satellite imagery when you want it • Keep your favorites one tap away Adjustable Height to Match Your Local Tide Table • Heights use the datum your local charts and tables use: MLLW in the United States, chart datum in Canada, Japan and Korea, LAT in Europe and Australia, MLWS in Peru and Ecuador (or you can choose your own from Mean Sea Level, MLLW, MLW, MLWS or LAT) Weather and Radar • Weather forecast is included for the station's location, with wind, temp, precipitation, and the day's high and low • Animated rain radar with a scrubber, so you can see what is coming Apple Watch • A full-screen tide chart on Apple Watch: turn the Digital Crown to step through highs, lows, sunrise, sunset and moon times, or drag to scrub through the next 30 days • Complications for every watch face, from a tide gauge to a chart of the next 24 hours, in the color you choose • Your favorite and nearby stations, with the current height and the next tide Tides is free with ads, however we do offer a one-time purchase to remove them if you would rather a clean distraction free experience.

About

SeaState

This marine weather app provides detailed forecasts for oceans worldwide, including swell height, wind, tides, and currents. It features a unique side-by-side comparison of conditions at two locations and an AI-powered briefing for go/no-go decisions.

Highlights
  • Worldwide marine weather forecasts
  • Side-by-side condition comparison
  • 24-hour wave height graphs
  • Redesigned wind page with compass rose
  • AI Captain's Brief for go/no-go advice
  • Passage planning with ETA
  • Safety Hub with emergency contacts and float plans
Features
Read full description

No guessing games, no scrolling through ten weather apps. Swipe the 7-day outlook for peak wind and wave height at a glance, then drill into hourly wind a full week out with gusts, true direction and Beaufort scale. The official NWS marine zone forecast comes straight from the source, written in plain English, free for every user. No subscription wall between you and the forecast that actually matters. See the whole picture on the chart. Toggle official NOAA ENC charts over Apple Maps for depth soundings, buoys and hazards at three detail levels, cached for when you lose signal offshore. Animated wind and current particle layers show you what's actually moving out there. Drag the time scrubber through the next 48 hours and watch conditions shift before you leave the dock. Tide stations are now plotted right on the chart. Tap any station for a 24-hour tide curve with the next high and low, so you can time the cut or the flat right. Have an AIS receiver aboard? Connect your boat's NMEA Wi-Fi gateway to see live depth, wind, water temperature and nearby vessel traffic on the chart, working offshore with no cell signal. Dropping the hook? Anchor Watch guards your position with a drag alarm and two-fix false-alarm protection, backed by Live Activity, Dynamic Island and Apple Watch alerts. Sleep easier. For the fishing crowd, sea surface temperature and current layers help you find the edges and breaks where fish stack up. SeaState is built for offshore anglers, cruisers, sailors, surfers and captains who want a straight answer, not a maybe. Download it and know before you go. SEASTATE PRO Unlock the full experience with SeaState Pro, available as monthly ($4.99) or yearly ($39.99) auto-renewing subscriptions, or a one-time lifetime purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vSY_MSMhZzNRZdRyUTLIYg2dysB6Yoo6szTZNGo12tEjolM4JxnRZflKeW21fHNcxzNn92tfcueboMY/pub

Screenshots

Tide Charts4 screens
SeaState4 screens

Verdict

The call

The clearest difference is ads: SeaState at none against Tide Charts's shown. SeaState also leads on rating (5.0 vs 4.8). Tide Charts's advantage is ratings volume (115K vs 3) and review sentiment (69% vs 50%). On price, update cadence, in-app purchases and monetization model 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. Tide Charts sells 1 one-off in-app purchase and SeaState sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SeaState holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Tide Charts has 115K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 69% of Tide Charts's written reviews are positive against 50% of SeaState's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Tide Charts ships an update every 3 weeks, SeaState every 2 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 5 level
Tide Charts versus SeaState: the parameters behind the verdict, then further details
ParameterTide ChartsSeaState
PriceFreeFree
Rating4.8 (115K ratings)5.0 (3 ratings) — better
Positive reviews69.1% of reviews — better50.0% of reviews
Number of ratings115K — better3
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#31 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.1 — better18.0
Further details — not scored
Size104 MB20 MB
Age rating4+4+
Developer7th GearTom Curry

Customer experience

Tide Charts

All ratings113,466 ratings
Positive95.9%
Neutral2.3%
Negative1.8%
Written reviews528 reviews
Positive69.1%
Neutral7.0%
Negative23.9%

SeaState

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Tide Charts

Reported bugs

4 issues
  • Tide data off by several hours
  • Tide graph not displaying correctly
  • App crashing on ad dismissal
  • Apple Watch complications freezing

Requested features

5 requests
  • Ability to set custom locations
  • Improved accuracy and data sources
  • Option to purchase ad-free version
  • Landscape mode support
  • More detailed tide height information

SeaState

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Tide Charts

One-time1
  • Remove Ads$1.99
3 purchases

SeaState

Subscriptions2
  • SeaState Pro Monthly7 Days trial$4.991 Month
  • SeaState Pro Yearly7 Days trial$39.991 Year
One-time1
  • SeaState Pro Lifetime$99.99

Questions

Is Tide Charts free?
Tide Charts is free to download, with in-app purchases available.
Is SeaState free?
SeaState is free to download, with in-app purchases available.
Which has better reviews, Tide Charts or SeaState?
SeaState is rated higher. Tide Charts averages 4.8 out of 5 from 115K ratings, while SeaState averages 5.0 from 3 ratings.
Do Tide Charts or SeaState have ads?
Tide Charts shows ads; SeaState does not.
Which is updated more often, Tide Charts or SeaState?
Tide Charts ships an update every 3 weeks, and SeaState every 2 weeks. Most recently, Tide Charts was updated on November 6, 2026 and SeaState on November 5, 2026.

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