ObjectiveX vs Stamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ObjectiveX
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ObjectiveX is a lightweight calendar app designed to keep your projects and daily plans clear and organized. Instead of juggling complex tools, ObjectiveX gives you a simple space to log objectives, track progress, and stay focused on what matters most. Clean calendar interface Create and manage projects with ease Switch quickly between logging, calendar, and home Minimal design for distraction-free planning Stay on top of your objectives — one step at a time.
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
Screenshots
Verdict
ObjectiveX and Stamp are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | ObjectiveX | Stamp |
|---|---|---|
| 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 |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 27 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Hyeongsik IM | Robert Piovesan |
In-app purchases
ObjectiveX
No in-app purchases
Stamp
No in-app purchases









