Comparison

OneClock vs Study Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Study Tracker

This app helps you track your study time, set custom courses and plans, and utilize various timers like Pomodoro and countdown for efficient learning. It offers detailed statistics, white noise for focus, and exam countdowns with widgets. Data syncs across devices via iCloud.

Highlights
  • Track study time
  • Customize courses and study plans
  • Pomodoro and countdown timers
  • Detailed study statistics
  • White noise for focus
  • Exam countdowns and widgets
  • Multi-device iCloud sync
Features
Read full description

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

OneClock4 screens
Study Tracker4 screens

Verdict

The call

The clearest difference is monetization model: Study Tracker at free with in-app purchases against OneClock's subscription. Study Tracker also leads on update cadence (fortnightly vs every 3 months) and ratings volume (29 vs 9). OneClock's advantage is review sentiment (83% vs 51%). 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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

Study Tracker holds the better App Store score, 4.1 against 3.9. Both are backed by a comparable volume of ratings — 9 and 29 respectively. Written reviews complicate that: 83% of OneClock's written reviews are positive against 51% of Study Tracker's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OneClock ships an update every 3 months, Study Tracker fortnightly. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
OneClock versus Study Tracker: the parameters behind the verdict, then further details
ParameterOneClockStudy Tracker
PriceFreeFree
Rating3.9 (9 ratings)4.1 (29 ratings) — better
Positive reviews83.0% of reviews — better50.8% of reviews
Number of ratings929 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size11 MB14 MB
Age rating4+4+
DeveloperChengdu Reinvent Technology Co., Ltd.Shenzhen Gude Aipu Technology Co., Ltd

Customer experience

OneClock

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews47 reviews
Positive83.0%
Neutral4.3%
Negative12.8%

Study Tracker

All ratings29 ratings
Positive75.9%
Neutral0.0%
Negative24.1%
Written reviews65 reviews
Positive50.8%
Neutral18.5%
Negative30.8%

In-app purchases

2 purchases

OneClock

Subscriptions2
  • Monthly$0.991 Month
  • Yearly$9.991 Year
2 purchases

Study Tracker

Subscriptions1
  • Premium (Month)$0.991 Month
One-time1
  • Premium (Lifetime)$4.99

Questions

Is OneClock free?
OneClock is free to download, with in-app purchases available.
Is Study Tracker free?
Study Tracker is free to download, with in-app purchases available.
Which has better reviews, OneClock or Study Tracker?
Study Tracker is rated higher. OneClock averages 3.9 out of 5 from 9 ratings, while Study Tracker averages 4.1 from 29 ratings.
Do OneClock or Study Tracker have ads?
Neither OneClock nor Study Tracker shows ads.
Which is updated more often, OneClock or Study Tracker?
OneClock ships an update every 3 months, and Study Tracker fortnightly. Most recently, OneClock was updated on September 26, 2026 and Study Tracker on September 30, 2026.

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