Tide Charts vs IslaBu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Worldwide tidal estimates
- Lunar data
- Weather forecast
- Current radar
- Offline predictions
- Favorite station management
- Apple Watch support
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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.
IslaBu
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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
Verdict
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
Both are free to download. Tide Charts sells 1 one-off in-app purchase. IslaBu asks for nothing beyond the download.
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.
| Parameter | Tide Charts | IslaBu |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (114K ratings) — better | — |
| Positive reviews | 68.7% of reviews | — |
| Number of ratings | 114K — better | — |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #24 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 104 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | 7th Gear | inBee, 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
Tide Charts
- Remove Ads$1.99
IslaBu
No in-app purchases









