SeeLock vs Dueday
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SeeLock
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## Lock your phone with a timer you already know ## Focus, and collect over 100 emoji SeeLock is a focus app that helps you reach your goals by locking your phone behind a clean, familiar-feeling timer. There are more than 100 emoji to discover — the more you focus, the more you collect, so staying focused actually stays fun. Restriction modes make sure you can't unlock early. Turn on Strongest Mode to block stopping the lock timer and prevent the app from being deleted. Add a passcode lock, and even switching restriction modes is protected. Make SeeLock your own. Set a background wallpaper and theme color to create a SeeLock only you have. Light and Dark Mode are both supported. 【More features】 - A familiar, simple timer — lock your phone in a tap - Automatic locking during the time slots you set - Full-screen alerts when the timer ends, even while Focus is on - Easily choose which apps get locked - Organize your past lock sessions with tags - Set a weekly goal for total lock time - Collect the emoji you earn in the Emoji Book - Share your phone-lock progress - Track your daily screen time - Visualize how often you lock with heatmaps and the lock timer - Check the timer outside the app with Live Activities and widgets - Back up your records with iCloud Terms of Use: https://clock-app.com/en/terms Privacy Policy: https://clock-app.com/en/privacy
Dueday
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Dueday is a simple, focused deadline countdown app. Add the dates that matter and see exactly how many days are left — at a glance, on your home screen, and right when you need a reminder. WHY DUEDAY Deadlines pile up: project due dates, exams, submissions, bills, trips, anniversaries. Dueday keeps them all in one place and counts down the days so nothing sneaks up on you. BIG, CLEAR COUNTDOWN Every deadline shows the days remaining as a bold D-day count (D-7, D-DAY, D+3). Your list is automatically sorted by the nearest due date, so the most urgent item is always on top. HOME SCREEN WIDGET Add the Dueday widget to your home screen and always see the days left for your next deadline — no need to open the app. The countdown updates every day on its own. REMINDERS Get a local notification before each deadline. Choose on the day, 1 day, 3 days, or 1 week before — per deadline. ORGANIZE YOUR WAY - Color-code each deadline - Add an optional note - Edit or delete any time PRIVATE BY DESIGN Dueday works fully offline. There is no login and no account. All your data stays on your device (local database) and is never uploaded. MADE TO BE EASY - Clean Material 3 design - Light and dark mode - English and Japanese - Free to use (contains ads) Add your first deadline and let Dueday count the days for you.
Screenshots
Verdict
The clearest difference is in-app purchases: Dueday at none against SeeLock's 6. Dueday also leads on ads (none vs shown). SeeLock's advantage is update cadence (weekly vs every 2 weeks). On price, device support and iOS requirement 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. SeeLock sells 6 in-app purchases, starting at $1.99 per month. Dueday asks for nothing beyond the download.
SeeLock ships an update weekly, Dueday every 2 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.
| Parameter | SeeLock | Dueday |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 97 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomoki Uda | Yuki Okawa |
In-app purchases
SeeLock
- Focus月間プラン (割引価格)$1.991 Month
- Focus月間プラン$1.991 Month
- Focus年間プラン (割引価格)$19.991 Year
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- Focus年間プラン$19.991 Year
- Focus 買い切りプラン (割引価格)$44.99
- Focus 買い切りプラン$44.99
Dueday
No in-app purchases








