3 Second vs My Mark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3 Second
Easily capture and organize daily moments with short video clips. This app simplifies journaling by focusing on brief recordings, offering features like automatic sorting, mood filters, and time-lapse views to help you revisit memories and track your personal growth.
- Quick 3-second video recording
- Automatic calendar view
- Mood-enhancing filters
- Monthly & yearly timelapse
- Time Machine for past dates
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3 Second – Capture Today in 3 Seconds Do long diary entries feel overwhelming? Tired of complex editing? With 3 Second, just 3 seconds is all it takes. Capture tiny moments from your day and let them grow into meaningful memories over time. Key Features • Quick 3-second video recording Capture your day instantly in a simple, focused format. • Automatic calendar view sorted by date All your moments are organized by day, so you can revisit memories at a glance. • Mood-enhancing filters Apply filters to give your 3-second clips a special feeling. • Monthly & yearly timelapse Watch an entire month or year unfold in just seconds. • Time Machine for each date Revisit moments from the same day in past years and see how far you’ve come. Even in a busy life, don’t miss the moments that matter. All it takes is 3 seconds. Experience the passage of time. Meet your past self with 3 Second. Terms of Use: https://han.gl/HCCwV Privacy Policy: https://han.gl/Wclkw
My Mark
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Turn Your Thoughts into Power. The AI Journal for the Main Character Era. Are you tired of staring at a blank page? My Mark is not just a place to write—it is an intelligent companion that listens, analyzes, and guides you toward your best self. Blending the depth of Shadow Work with the beauty of a Cinematic Timeline, My Mark is the ultimate tool for mental clarity and aesthetic living. WHY MY MARK IS DIFFERENT: Unlike static diary apps that just store your words, My Mark helps you understand them. Using advanced, private AI, we turn your daily entries into actionable insights, helping you break cycles of anxiety and manifest your goals. MASTER SHADOW WORK & CBT • Guided Healing: Access specialized prompt libraries designed for Shadow Work, Inner Child Healing, and Cognitive Behavioral Therapy (CBT). • Somatic Insights: Track not just what you feel, but where you feel it. Connect your emotions to your body for deeper trauma integration. • AI Coach: Stuck? Ask your journal. "Why have I been feeling anxious lately?" "What are my recurring patterns?" Get instant, personalized answers based on your history. LIVE YOUR MAIN CHARACTER ENERGY • Cinematic Timeline: View your life as a beautiful, scrolling stream of memories, not boring calendar grids. Combine photos, voice notes, and text into a visual legacy. • Aesthetic Themes: Customize your sanctuary with "Dark Mode," "Light Mode," and color accents that match your vibe. • Manifestation Logs: Dedicated spaces to script your future and track your goals. UNCOMPROMISED PRIVACY (THE VAULT) • Zero-Knowledge Encryption: We cannot read your entries. You own your data. • Biometric Lock: Secure your journal with FaceID, TouchID, or a custom PIN. • Offline First: Your secrets stay on your device. FAIR PRICING • No Monthly Subscriptions: We believe mental health shouldn't have a rental fee. Enjoy a generous free tier, or unlock everything with a simple one-time upgrade. Yours forever. Perfect for fans of: The Shadow Work Journal, Day One, Reflection, and 1 Second Everyday. Download My Mark today and start writing your own story.
Screenshots
Verdict
The clearest difference is update cadence: 3 Second at daily against My Mark's fortnightly. My Mark's advantage is iOS requirement (15.1 vs 18.6). 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. 3 Second sells 5 in-app purchases, starting at $3.99 per month and My Mark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
3 Second ships an update daily, My Mark fortnightly. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.
| Parameter | 3 Second | My Mark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 94.8% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Daily — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 266 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Cheol Kim | MANOGARAN P |
In-app purchases
3 Second
- YesToDay Premium$3.991 Month
- YesToDay Premium3 Days trial$19.991 Year
- Yearly Special Price$19.991 Year
- Upgrade Lifetime$19.99
- Upgrade Lifetime$29.99
My Mark
- Lifetime Premium$29.99









