AteIt! vs Caffeine Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AteIt!
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食べたものを写真で記録する、シンプルな食事日記アプリ。 カメラで撮ってタップするだけ。面倒な栄養計算や食品データベースの検索は不要です。カレンダーに並ぶ食事の写真を見返すだけで、自分の食生活が一目でわかります。 主な機能: - カレンダー表示(月/週切り替え)で食事を一覧 - 写真撮影またはライブラリから簡単に記録 - 絵文字とメモで気分や内容をひとこと添えられる - お酒・お菓子・運動タグでカレンダーにアイコン表示 - データ画面で記録の統計・月別グラフを確認 - 食事記録リマインダー(記録がない日だけ通知) - 体重記録とグラフ表示(オプション) - 体重記録リマインダー通知 - ダークモード対応 無料で1日4件まで記録可能。広告は表示されません。 【Premium プラン】 - 1日20件まで記録可能 - 過去の指定した日付にも記録可能 - 記録データをクラウドに保存 - 複数端末で同期可能 利用規約: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ プライバシーポリシー: https://koboji.github.io/ateit_pages/
Caffeine Clock
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Not how much you drank - how much is still in you now, and how much will still be there at bedtime. One tap to log Set up to four usual drinks and log them the moment you tap. Mistaps are undoable, and you can move a record to "1 hour ago" afterwards. The hours you could not see The ring at the centre - the Caffeine Halo - shows what is estimated to remain. It also shows the estimate at your bedtime and when it will be mostly gone. Connect Health (Pro) Compare the estimate at bedtime with your time asleep, night wakings, and next-morning HRV, using your records only. The analysis stays on this device and is never sent anywhere. Widgets and Apple Watch Check from the Lock Screen, Home Screen, or your watch face - and log right there. Apple Watch logs offline and syncs later without duplicates. Two themes Calm roast and crema tones, or a dark base with electric accents. Switch any time in Settings. Never blames you Days without records are not failures. No streak pressure, and notifications carry neutral wording only. No account No sign-in. Your records stay on your device. Caffeine Clock Pro (one-time purchase) unlocks sleep relations, every widget, Apple Watch, custom presets, and CSV export. Logging, estimates, the calendar, and today's and weekly stats stay free. Note: caffeine amounts shown are estimates, not measurements. Do not use them for medical, medication, or driving decisions.
Screenshots
Verdict
The clearest difference is update cadence: Caffeine Clock at every 2 days against AteIt!'s every 2 weeks. 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. AteIt! sells 2 in-app purchases, starting at $0.49 per month and Caffeine Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
AteIt! ships an update every 2 weeks, Caffeine Clock every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | AteIt! | Caffeine Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 6 MB |
| Age rating | 4+ | 12+ |
| Developer | koji yanagida | kazunari aoki |
In-app purchases
AteIt!
- Premium(月額)$0.491 Month
- Premium(年額)$5.991 Year
Caffeine Clock
- Caffeine Clock Pro$9.99








