AtCoder Alarm vs 推しClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AtCoder Alarm
This alarm clock requires users to solve a simple programming problem to turn it off. Problems are randomly selected from past AtCoder "A" tasks. Ensure you wake up on time with this unique challenge.
- Solve programming problems to stop alarm
- Random AtCoder "A" task selection
- Ensures waking up
- Requires AtCoder pre-registration
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This App is an alarm clock that doesn't stop until solving an easy problem of AtCoder (competitive programming web site). The problem is chosen randomly from "A" tasks of past ABCs. Let's make sure to wake up! * Pre-registration with AtCoder is required.
推しClock
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OshiClock — 推しと一緒に、今日を乗り越える。 OshiClock(推しClock)は、推しの写真と推し色で毎日を彩る、ワークライフバランス・カウントダウンアプリ。 始業からランチ、終業までの残り時間をひと目で確認でき、次のイベントや記念日もまとめて管理。 忙しい日でも「推しと一緒なら頑張れる」そんな時間を届けます。 主な機能 ホーム画面 推しの写真を背景に設定(選択・ズーム・トリミング対応) 推し色のデジタル時計(秒単位で更新、視認性の高い白縁取り) 始業 / ランチ開始 / ランチ終了 / 終業までの残り時間を自動表示 次回イベントまでのカウントダウン 記念日からの経過日数 AdMob バナー広告(画面下部) 推し設定 背景写真の選択・クロップ 推し色テーマ(HSV カラーピッカーで自由に設定) イベント管理(タイトル+日付で追加・削除) 記念日設定(名称+日付) 通知設定 通知の一括 ON/OFF 土日祝の通知スキップ(日本の祝日に対応) ホーム画面のカウントダウン表示切替 始業 / ランチ開始 / ランチ終了 / 終業の通知時刻とメッセージを個別設定
Screenshots
Verdict
The clearest difference is update cadence: AtCoder Alarm at daily against 推しClock's every 2 months. 推しClock's advantage is iOS requirement (13.0 vs 15.5). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
AtCoder Alarm ships an update daily, 推しClock every 2 months. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.
| Parameter | AtCoder Alarm | 推しClock |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Daily — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Kiichi Ito | AKIHIRO FURUSAWA |
In-app purchases
AtCoder Alarm
No in-app purchases
推しClock
No in-app purchases









