2025/08/16 Support Android 16<br>2024/01/19 時間差補正機能を追加<br>2023/12/25 オススメ設定ボタンを追加、周波数表示のバグを修正、処理速度の最適化、その他<br>2023/12/24 初期提供バージョン
JJY 電波時計 時刻合わせ 標準電波 疑似送信アプリ is a tools app by FREE WING with 10,000+ downloads (about 23K estimated). +130 installs in the last 7 days. Released Dec 23, 2023. Install growth, rank history, SDKs and ad networks.
From the store listing: “For Japan: Use in places where JJY standard radio waves cannot reach or are difficult to receive when setting the time on a radio clock.”
