TimerTiTi vs PrepLibrary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TimerTiTi
This app helps you track study time with customizable timers and stopwatches. Visualize your progress with daily, weekly, and monthly graphs. Includes a to-do list feature and screen-always-on functionality.
- Timer and stopwatch modes
- Customizable target and timer times
- Daily, weekly, and monthly progress graphs
- To-do list functionality
- Always on screen option
- Flip to start recording
- Customizable background and graph colors
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Timer for study, TimerTiTi 타이머티티 A different study every day with your own color! Post #TimerTiTi on Instagram! TiTi Features - Record Measurement - Timer Mode (Recording progresses even at the end of the app) - Record measurement - Stopwatch mode (recorded even at the end of the app) - Record Settings - Target Time, Timer Time Settings - History Settings - Set Month, Week, Daily Target Time for Log Window Display - Log Daily - Provides a cumulative time graph for each 24-hour time zone - Log Daily - Provides a cumulative time graph by record name - Log Week - Provides graphs of accumulated hours by week and by top five recorded names - Log Home - Provides total cumulative time and cumulative time graphs for each of the top five record names - Log Home - Provides the current Month cumulative time graph - Log Home - Provides a cumulative time graph for each of the top five current Month recorded names - Log Home - Provides the current Week cumulative time graph - Notification - 5 minutes before timer expires, notification of shutdown - Notification - Stopwatch 1-hour elapsed notification - Control - Always on screen function - Control - Flip to start recording - Color - Timer & Stopwatch Background Color Color Customization - Color - 12 Graph Theme Colors (Dark & Light Mode) - Todolist - Provides the ability to add, modify, check, and delete Todolist - instagram : @study_withtiti / email : contact.timertiti@gmail.com -
PrepLibrary
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PrepLibrary – Learn, Share & Grow PrepLibrary is your companion for smarter exam preparation. Organize your studies, attend live classes, practice mock tests, set personalized study goals, and stay focused on your academic journey—all in one learning platform. Whether you are preparing for competitive examinations, entrance tests, professional certifications, or academic assessments, PrepLibrary helps you plan your preparation, practice consistently, and track your progress. KEY FEATURES Virtual Classrooms Join live online classes and learning sessions from anywhere. Participate in structured learning experiences and stay connected with your classes and study activities. Interactive Test Series Practice with online tests and mock examinations to assess your preparation. Review your performance, identify areas for improvement, and work toward better results. Personalized Study Goals Set study goals based on your learning needs. Organize your preparation, plan your study activities, and track your progress toward your academic objectives. Focus Sessions Create dedicated study sessions using timers and productivity tools. Build consistent study habits and make the most of your planned study time. Focus Mode / Focus Shield Reduce distractions during your study sessions with Focus Mode, also known as Focus Shield. Select apps you want to avoid while studying and use focus restrictions to help you stay on track during an active session. Progress Tracking Keep track of your study activities, test performance, and learning progress. Understand your strengths, identify topics that need more attention, and plan your next steps. Community-Based Learning Connect with fellow learners through community features that encourage discussion, collaboration, peer interaction, and knowledge sharing. BUILT FOR YOUR LEARNING JOURNEY PrepLibrary brings together essential tools for a more organized and productive approach to learning: • Attend live classes and learning sessions. • Practice mock tests and assess your preparation. • Set personalized study goals. • Create focused study sessions. • Reduce distractions during study time. • Monitor your learning progress. • Connect and learn with a community of students. Whether you are attending a class, preparing for an examination, practicing a mock test, or working toward your daily study goals, PrepLibrary helps you make your study time more purposeful. PrepLibrary – Plan your preparation. Stay focused. Practice consistently. Track your progress.
Screenshots
Verdict
The clearest difference is update cadence: PrepLibrary at every 4 days against TimerTiTi's monthly. 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.
TimerTiTi ships an update monthly, PrepLibrary every 4 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.
| Parameter | TimerTiTi | PrepLibrary |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (24 ratings) — better | — |
| Positive reviews | 87.0% of reviews | — |
| Number of ratings | 24 — better | — |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 113 MB | 250 MB |
| Age rating | 9+ | 12+ |
| Developer | Minsang Kang | PREPLIBRARY LLP |
In-app purchases
TimerTiTi
No in-app purchases
PrepLibrary
No in-app purchases








