TimerTiTi vs Cogi
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 -
Cogi
This app helps you retain insights from books you've read. It resurfaces your highlights and quotes daily using spaced repetition, ensuring that important ideas stick with you over time. Engage with content through simple swipe gestures and track your progress.
- Daily highlight cards with swipe gestures
- Spaced repetition for memory retention
- Quote Mix for content control
- Customizable daily highlight count
- Shareable quote cards
- Streak tracking and leaderboard
- iCloud sync
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You read great books. You highlight powerful ideas. Then you forget them. Cogi fixes that. It takes the quotes and highlights from the books you've read and resurfaces them daily using spaced repetition. The same memory technique used by language learners and medical students. Ideas come back to you at scientifically timed intervals so they actually stick. Every morning, Cogi serves you a handful of highlights on beautiful, minimal cards. Swipe right if it resonated, left to see it again sooner, or up to remove it. That's it. No clutter, no feeds, no noise, just the wisdom you already collected, working its way into how you think. Features: - Daily highlight cards with swipe gestures - Spaced repetition intervals that adapt to your reviews - Quote Mix to control which books appear more or less - Customizable daily highlight count (3 to 15) - Share beautifully designed quote cards - Streak tracking with a global leaderboard - iCloud sync across all your devices - Light and dark mode - Completely free, no ads Cogi is built for readers who believe the best ideas deserve more than one reading.
Screenshots
Verdict
The clearest difference is rating: Cogi at 5.0 against TimerTiTi's 4.3. Cogi also leads on update cadence (every 3 days vs monthly). TimerTiTi's advantage is ratings volume (23 vs 2) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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.
Cogi holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: TimerTiTi has 23 ratings behind it against 2, so its average is the more settled of the two.
TimerTiTi ships an update monthly, Cogi every 3 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.
| Parameter | TimerTiTi | Cogi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (23 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 87.0% of reviews | — |
| Number of ratings | 23 — better | 2 |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 113 MB | 3 MB |
| Age rating | 9+ | 17+ |
| Developer | Minsang Kang | Prince Malik |
Customer experience
TimerTiTi
Cogi
In-app purchases
TimerTiTi
No in-app purchases
Cogi
No in-app purchases









