Stamp vs Pattern
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stamp
This app automatically logs your non-meeting activities, like reading or exercise, as calendar events. It offers a one-tap timer for manual logging and integrates with Strava and Whoop for seamless workout and sleep tracking. Your calendar will finally reflect your entire day.
- One-tap start/stop timer
- Strava integration for workouts
- Whoop integration for sleep and recovery
- Syncs with Apple, Google, and Outlook Calendar
- Customizable activities with names and colors
- Live Activity on Lock Screen and Dynamic Island
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Stamp - Calendar Logger Your calendar shows every meeting. But where did the rest of your day go? The hours you spent reading, studying, or at the gym — they just disappear. Stamp logs them as calendar events automatically, so your calendar finally reflects your whole day. STAMP IS NOT A HABIT TRACKER No streaks. No check-ins. No badges. Stamp is a calendar tool — specifically the write layer that calendar apps have always been missing. It does one thing and does it well. HOW IT WORKS Log anything with a one-tap timer. Tap start when you begin, tap stop when you're done — the session appears in your calendar with the exact start and end time. Connect Strava and workouts go straight to your calendar the moment you finish a run or ride, no timer needed. Connect Whoop and your sleep sessions, workouts, and a daily recovery summary with HRV and recovery score appear in your calendar automatically every day. KEY FEATURES One-tap start/stop timer per activity Strava integration — workouts sync to your calendar automatically when you finish Whoop integration — sleep sessions, workout activities and daily recovery summary with HRV and recovery score sync automatically Connects to Apple, Google, and Outlook Calendar Customize activities with names and colors Adjust session times and add a note before saving Live Activity on the Lock Screen and Dynamic Island while a session is running Timer keeps running if you leave the app Session history — last 30 days at a glance, with links back to Strava and Whoop activities Works offline — sessions sync to your calendar when you reconnect
Pattern
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Pattern reads the seven days you just lived and tells you what they mean. Apple Watch already tracks your sleep, HRV, heart rate and steps. Your calendar already holds every meeting and focus block. None of those apps look across the lines. Pattern does — fully on your device. Each morning you get one short paragraph: "Tuesdays your HRV drops 12% — the days you had three back-to-back meetings before noon." No number dumps, no medical advice, no charts to interpret. The pattern itself. Deep Work sessions are built in. Tap to start a 25, 50 or 90 minute focus block — the timer is wall-clock anchored so it survives the screen locking. Each session gets a one-tap reflection: deep, shallow, or interrupted. Over time Pattern correlates which sessions actually moved you, and adjusts what it suggests next. Everything stays local. The language model runs on device — Apple Foundation Models on iOS 26, or a downloaded open-source model. Your health data, your calendar, your reflections, your sessions — all live in a Files-visible folder on your iPhone. No account, no sync, no servers.
Screenshots
Verdict
The clearest difference is in-app purchases: Stamp at none against Pattern's 1. Stamp also leads on iOS requirement (15.1 vs 17.0). Pattern's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads 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. Pattern sells 1 one-off in-app purchase. Stamp asks for nothing beyond the download.
Stamp ships an update every 3 weeks, Pattern every 3 days. Both last shipped on November 5, 2026.
| Parameter | Stamp | Pattern |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 39 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Piovesan | Mustafa Ergisi |
In-app purchases
Stamp
No in-app purchases
Pattern
- Pattern Full Access$9.99









