OneClock vs Study Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneClock
This app offers a variety of customizable clock styles for desktop and mobile devices. Enjoy features like adjustable display modes, font customization, and transparency settings, with multiple clock designs available.
- Multiple clock styles (Flip, Digital, Dial)
- Desktop display on macOS
- Customizable font and transparency
- Portrait and landscape modes
- Screen not quenching
- Home screen and widget support
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OneClock - Flip Clock And Desktop Clock #iOS Version - Switch between portrait and landscape mode - The screen not be quenched - Switch between the different clock styles - Custom 24h Format - Custom Tag - Custom One_Click Menu - Home Screen Clock (Small, Medium) - Hour Widget - Minute Widget - Second Widget #macOS Version - Many Clock Styles - The clock can be displayed on the desktop - The clock can customize the font - The clock can set the transparency - There are multiple screensavers - Dark Theme And Light Theme Styles: Flip Clock Digital Clock Dial Clock More Styles Will Come... We offers yearly subscriptions. The subscription prices are: $0.99/month $9.99/Year -You can subscribe to yearly plan. The prices are in US dollars. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. -Payment will be charged to iTunes Account at confirmation of purchase. -Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the period. -Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. -Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. -Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: http://docs.onenice.tech/#/OneClock/privacy Terms of Service: http://docs.onenice.tech/#/OneClock/terms Terms of Use: :https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact us: hi@onenice.tech
Study Tracker
This app helps you focus on your studies and track your time by subject. It offers various timers, detailed statistics, and customization options to create your ideal study environment. Sync your progress across devices and stay motivated with exam countdowns.
- Study time tracking by subject
- Multiple timer options (Pomodoro, countdown, stopwatch)
- Daily and weekly study statistics
- Exam countdowns and widgets
- Customizable themes and sounds
- iCloud sync across devices
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Study Tracker helps you focus on learning and see where your study time goes. Whether you are preparing for exams, working toward a qualification, or learning on your own, start with one focused session. Track time by subject and review your daily and weekly effort. STUDY BY SUBJECT Create subjects and study plans for reading, lectures, practice questions, review, and more. Record time for each activity and see how you divide your effort. FIND YOUR FOCUS Choose a full-screen clock, stopwatch, countdown timer, or Pomodoro timer. Switch between flip-clock and digital displays to suit reading, timed practice, or focused study. SEE YOUR EFFORT ADD UP Review your study calendar, daily and weekly statistics, and time spent on different subjects. Add missed sessions manually and create a study poster to save or share. KEEP YOUR EXAM DATE IN VIEW Set your target date and see how many days remain. Add countdown widgets to your Home Screen and Lock Screen to keep your goal in sight. Lock Screen widgets require iOS 16 or later. MAKE IT YOUR STUDY SPACE Choose a theme, adjust the clock's text size, colors, and display options, and settle in with rain, wind, or river sounds. SYNC AND KEEP YOUR TIMER VISIBLE Sync study records between iPhone and iPad using the same Apple Account with iCloud enabled. Picture in Picture lets you keep a timer visible while using other apps, on supported devices and systems. Start with one session today. Give your effort a record you can look back on. PREMIUM AND PURCHASES Study Tracker is free to download and includes basic timing and study recording. Premium unlocks unlimited subjects and study plans, detailed statistics, additional customization, and more. Premium is available through a monthly auto-renewable subscription or a one-time lifetime purchase. The subscription period is one month. The price and currency are displayed before purchase and confirmed by the App Store. Payment is charged to your Apple Account when you confirm the purchase. Monthly subscriptions renew automatically until canceled. Manage or cancel in Settings > your Apple Account > Subscriptions. Canceling renewal normally preserves access until the end of the current paid period. A lifetime purchase is a one-time payment with no automatic renewal. Buying lifetime Premium or deleting the app does not cancel an existing monthly subscription. Manage that subscription separately. Use Restore Purchases in the app to restore eligible purchases. Terms of Use: https://www.gudelabs.com/study-tracker/en/terms.html Privacy Policy: https://www.gudelabs.com/study-tracker/en/privacy.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact: zach@gudelabs.com
Screenshots
Verdict
The clearest difference is monetization model: Study Tracker at freemium against OneClock's subscription. Study Tracker also leads on update cadence (every 10 days vs every 3 months) and ratings volume (28 vs 9). OneClock's advantage is review sentiment (83% vs 52%). On price, rating, ads and in-app purchases 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. OneClock sells 2 in-app purchases, starting at $0.99 per month and Study Tracker sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 3.9 for OneClock against 4.0 for Study Tracker. Both are backed by a comparable volume of ratings — 9 and 28 respectively. Written reviews are what separate them: 83% of OneClock's written reviews are positive against 52% of Study Tracker's.
OneClock ships an update every 3 months, Study Tracker every 10 days. The most recent releases landed on November 2, 2026 and November 13, 2026 respectively.
| Parameter | OneClock | Study Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (9 ratings) | 4.0 (28 ratings) — better |
| Positive reviews | 83.0% of reviews — better | 51.5% of reviews |
| Number of ratings | 9 | 28 — better |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Freemium — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Chengdu Reinvent Technology Co., Ltd. | Shenzhen Gude Aipu Technology Co., Ltd |
Customer experience
OneClock
Study Tracker
Bugs and requests
OneClock
Not enough reviews yet to summarise bugs or requests.
Study Tracker
Reported bugs
16 issues- Cannot add new records
- Demo data cannot be removed
- Automatic study data that is not mine
- Calendar dates are incorrect
- Premium features not unlocked after purchase
Show 11 moreShow fewer
- Timer doesn't notify when app is in background
- Switching to 'today' view in premium doesn't work
- Flip clock design changes not applying
- Calendar bug with incorrect days
- Mac app has a grey window at the bottom
- Data deleted or not updating
- Closing iCloud sync results in data loss
- Timer won't buzz if app is minimized
- Cannot add subjects even after unlocking premium
- Cannot add study subjects after unlocking premium
- Deleting a record causes app to exit
Requested features
33 requests- Add study time goals
- Ability to take notes on study sessions
- Sync study sessions across devices
- Add a Monday-start option for the calendar
- Ability to choose colors for courses and theme
Show 28 moreShow fewer
- Make plans under courses collapsable
- See breakdown of time spent on each plan within a course
- Change analysis time period (daily, weekly, monthly)
- Make test date at the top removable
- Add option for multiple tests/exam dates
- Allow editing of course and plan names
- Add daily time pie chart
- Set a start time for tracking (for re-takes)
- Add widgets for the app
- Ability to reset stats without deleting
- Option to have no exam day
- Add more white noise options and relaxing music
- More theme color options
- More clock styles, including those with background images
- Add a check-in/attendance feature
- Add a timetable feature with reminders
- Add a section for ticking off tasks
- Ability to edit study records (subject name)
- Improve app exit after deleting a record
- Desktop widgets
- Mobile and tablet data sharing
- Customizable exam types and subjects
- Add a daily plan feature with goal check-ins
- Add a feature to edit subject names
- Add a feature to start and stop timers from widgets
- Add a feature to customize exam names
- Add a feature to edit course titles easily
- Add a feature to reset all data with one click
In-app purchases
OneClock
- Monthly$0.991 Month
- Yearly$9.991 Year
Study Tracker
- Premium (Month)$0.991 Month
- Premium (Lifetime)$9.99








