Mobile app · Education & science

Sameura Dam Monitor

Storage rates and related data for 125 dams in Japan including Sameura Dam.

Free, with trade-offs
Android
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Free, with trade-offsconfirmed by F-Droid
License: Apache-2.0 — Open source (permissive)confirmed by F-Droid
Open source: Yes
Commercial use: Yesconfirmed by F-Droid
Account required: not documented
Credit card required: Noconfirmed by F-Droid
Watermark: Not applicable
Ads: No
Platforms: AndroidEstablished by Android: F-Droid
Distribution: Available on F-Droid
Publisher: tecogonaz
Latest version: 1.0.0-beta.5 (18 October 2026)
Latest activity: 18 October 2026
Source code: github.com/tecogonaz0439/TCSameuraDamMonitor-android

Overview

Features described in its F-Droid listing: home screen widgets.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Home screen widget — check the real-time storage rate and message at a glance” — F-Droid, 10 November 2026
“Real-time data is fetched by default via sudmonitor (https://sudmonitor.kusugami-lab.net), a self-hosted, non-official caching relay of the same MLIT data; the official MLIT sources can be selected instead in the app…” — F-Droid, 10 November 2026

At a glance

Sameura Dam Monitor is free, with trade-offs: it relies on a non-free online service.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
No advertising
Commercial use allowed

Weaknesses

Flagged by F-Droid: relies on a non-free online service

Sources and checks

Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) — 6 November 2026
Last technical check: 6 November 2026
Description from F-Droid — F-Droid (citation courte)

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