# 潮位アラート > Change your catch and ride the waves. Don't miss high and low tide notifications with this must-have app for fishing and surfing. Canonical page: [https://chrome-stats.com/d/com.osdw.tideAlert](https://chrome-stats.com/d/com.osdw.tideAlert) ## Overview - **ID:** `com.osdw.tideAlert` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** kabuzo - **Category:** WEATHER - **Downloads:** 57 - **Last updated:** 2026-03-14 - **First published:** 2026-03-14 - **Publisher country:** JP - **Data as of:** 2026-09-14 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.osdw.tideAlert) - **Website:** [https://osdw.com](https://osdw.com/) - **Privacy policy:** [https://www.osdw.com/%e3%83%97%e3%83%a9%e3%82%a4%e3%83%90%e3%82%b7%e3%83%bc%e3%83%9d%e3%83%aa%e3%82%b7%e3%83%bc/](https://www.osdw.com/%e3%83%97%e3%83%a9%e3%82%a4%e3%83%90%e3%82%b7%e3%83%bc%e3%83%9d%e3%83%aa%e3%82%b7%e3%83%bc/) ## Description [A must-see for anglers and surfers! Master the tides!] "Tide Alert" is an app that lets you easily and precisely check tide information (tide graphs) for ports and points across Japan.

It's more than just a tide chart. Its greatest feature is its **notification function**. It accurately notifies you of the desired tide timing (high tide/low tide) and sunrise/sunset times via push notifications. You'll never miss the best fishing or surfing time again.

Key Features

Easy-to-Read Tide Graph: The intuitive design lets you see the tide movements of the day at a glance.
Tide Alert Notification: Automatically receive notifications for high and low tide times. You'll never miss a moment, even if you're not looking at your smartphone.
Nearest Location Search: The GPS function instantly finds and displays the nearest observation point from your current location. Never get lost on a long trip.
Weather and Ocean Condition Map Integration: The popular "Windy" map is built into the app. Check wind direction, wave height, and cloud movement with just one tap.
Moon Phase/Tide Name Calendar: View tidal cycles, including spring and neap tides, on a calendar. Plan your weekend fishing trips and trips with ease.
Favorite Bookmarks: Register your favorite home spots and check them immediately after launching the app.
Recommended for:

Fishing: For those who want to avoid missing the best times before and after high tide, and want to know when the tide is low.
Surfing: For those who want to know the best tide times for good waves.
Clamming/Playing on the Rocks: For families who want to know the best times for low tide.
Boats/Marine Leisure: For those who want to check tide levels for safe navigation.
"Tide Alert" makes your marine life more convenient and comfortable. Download it now and head out to sea!

🗺️ Added bathymetric (bathymetric) display feature
・Displays the bathymetric topography of the entire country of Japan using bathymetric contours
・See water depth at a glance, perfect for finding fishing spots
・Automatically adjusts the level of detail based on the zoom level
🎛️ Map layer switching feature
・Toggles bathymetric contour display on/off
・Switches between standard map and satellite imagery
・Toggles the display of nautical chart layers (nautical aids)
・Optimized for smooth operation on low-spec devices
📍 Map feature improvements
・Added a scale bar to the map (for easier understanding of distance)
・Added location tracking mode
・Added fixed north (compass) mode
・More intuitive map navigation
⚡ Performance improvements
・Optimized bathymetric contour calculation
・Caching function for faster operation
・Disable bathymetric contours when needed for smoother operation
📚 Expanded tutorial
・Detailed explanation of how to use new features
・Added performance tips
Other minor improvements and bug fixes. ## Rankings - #2,201,598 — Overall ## Similar extensions and apps - [Tide and Weather - SurfTideΔ](https://chrome-stats.com/d/com.jjworkshop.android.surftidedelta) — 17,518 users - [潮時と天気 - 潮見表, 潮汐, 予報, 潮位表, 釣り](https://chrome-stats.com/d/kr.co.atcultures.moontidesjjj) — 79,564 users - [しおさい-潮見表／天気予報](https://chrome-stats.com/d/shiosai.mountain.book.sunlight.tide) — 291,317 users - [釣り潮スカウター -潮汐、潮流、日の出-](https://chrome-stats.com/d/com.takebit.tyosoku) — 173 users - [今日の潮汐 - 潮見表・タイドグラフ+ 海天気・海水温・釣り](https://chrome-stats.com/d/com.shark.ja_tide) — 32,453 users - [Tide Alert](https://chrome-stats.com/d/com.tidealert.app) — 15,165 users, 4.33 / 5 - [潮汐と天気 - 潮見表, 潮位グラフ, 天気情報, 海釣り](https://chrome-stats.com/d/com.wizsoft.japantide) — 4,795 users - [TideChart](https://chrome-stats.com/d/com.shoreresolutions.tidechartapp) — 98 users - [潮時計 - プロ専用タイドグラフ＆リアルタイム潮見表](https://chrome-stats.com/d/com.lockcalm.shiodokei) — 116 users - [タイドグラフBI / 4,000ヶ所の釣り場に対応した潮見表](https://chrome-stats.com/d/jp.bcreation.tidegraphbi) — 522,693 users - [潮流ちぇっく：釣りの潮流・転流チェック](https://chrome-stats.com/d/com.mssuccess.tidechecker) — 3 users - [潮見表 探鳥 潮干狩り 釣り](https://chrome-stats.com/d/jp.gr.java_conf.siranet.shiomi) — 185 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.osdw.tideAlert)