Comparison

Tide Charts vs IslaBu

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

IslaBu

Features
Read full description

Over your morning coffee you know where to go. IslaBu tells you where the sun is on the Canary Islands, where the sea is calm, whether calima is coming – and why. TODAY ON YOUR ISLAND • The day's recommendation in one sentence: which beach and when. • Sky, temperatures and sea by part of the island – the north is often cloudy while the south is sunny. • UV, calima and sunset at a glance. • Official warnings from AEMET and the Government of the Canary Islands, always on top. A SCORE FOR EVERY BEACH – WITH THE WHY • Swim and beach scores from 0 to 100 for hundreds of beaches and natural pools. • We work out whether a beach is sheltered from today's waves: we know which way it faces and where the swell comes from. • Every number comes with a reason: "calm sea", "offshore wind", "waves 1.5 m". 48 HOURS AHEAD • Hour by hour: score, clouds, temperature, wind, waves and UV. • High and low tide, as a guide. • Water temperature, swell and wind direction. MAP AND FAVORITES • Every beach on the island on a map, colored by its score. • Save your favorite beaches – they stay on your phone only. • Directions to the beach in one tap. All 8 inhabited islands: Gran Canaria, Tenerife, Lanzarote, Fuerteventura, La Palma, La Gomera, El Hierro and La Graciosa. In English, Spanish, German, Czech and Polish. Free, no sign-up, no tracking. The score is a guide. Flags and lifeguards always come first. Data: AEMET, Gobierno de Canarias, Open-Meteo, Copernicus, OpenStreetMap, EEA. IslaBu by inBee.

Screenshots

Tide Charts4 screens
IslaBu4 screens

Verdict

The call

The clearest difference is in-app purchases: IslaBu at none against Tide Charts's 1. IslaBu also leads on ads (none vs shown) and update cadence (every 2 days vs every 3 weeks). Tide Charts's advantage is chart position (#24 vs unranked) and device support (4 vs 1). On price 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. IslaBu asks for nothing beyond the download.

UpkeepUpdate frequency

Tide Charts ships an update every 3 weeks, IslaBu every 2 days. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 5 level
Tide Charts versus IslaBu: the parameters behind the verdict, then further details
ParameterTide ChartsIslaBu
PriceFreeFree
Rating4.8 (114K ratings) — better—
Positive reviews68.7% of reviews—
Number of ratings114K — better—
Update frequencyEvery 3 weeksEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#24 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size104 MB12 MB
Age rating4+4+
Developer7th GearinBee, s.r.o.

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

IslaBu

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Tide Charts

One-time1
  • Remove Ads$1.99
None

IslaBu

No in-app purchases

Questions

Is Tide Charts free?
Tide Charts is free to download, with in-app purchases available.
Is IslaBu free?
IslaBu is free to download, with no in-app purchases.
Do Tide Charts or IslaBu have ads?
Tide Charts shows ads; IslaBu does not.
Which is updated more often, Tide Charts or IslaBu?
Tide Charts ships an update every 3 weeks, and IslaBu every 2 days. Most recently, Tide Charts was updated on October 29, 2026 and IslaBu on October 26, 2026.

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