Pocket Watch Box
by Fumihiro Kawasaki
· Lifestyle
· Free
On the App Store since April 2026
· Data updated
Pocket Watch Box is made and published by Fumihiro Kawasaki. AppBrain is an independent app data site and isn't affiliated with Fumihiro Kawasaki. The app name, icon, screenshots and description belong to Fumihiro Kawasaki and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- July 24, 2026
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Releases
Updates seen on the App Store- Version
- 1.0.2
- Launched
- April 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 39.1 MB
- Content rating
- Everyone
Technologies used by Pocket Watch Box
About the app and developer
About Pocket Watch Box
Pocket Watch Box is a lifestyle app developed by Fumihiro Kawasaki.
User Ratings
The app has no ratings yet.
App Information
Pocket Watch Box is freely available from the App Store. The app size is 39.11 MB. The latest version available is 1.0.2. The last update was on July 24, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since April 2026.
Developer information for Fumihiro Kawasaki
Address:
Store listing
By Fumihiro Kawasaki, from the App Store
Screenshots by Fumihiro Kawasaki, from the the App Store listing
Description by Fumihiro Kawasaki Written by the developer, not by AppBrain. Click to read.
Turn your iPhone into an acoustic timegrapher. Catalog every pocket watch
with the depth a serious collector deserves — by sound, by sight, by data.
Pocket Watch Box is a private collection manager designed for enthusiasts
of mechanical pocket watches, antique stopwatches, and vintage chronographs.
Every detail — from the antique typography to the on-device acoustic
timegrapher — exists because a real collector wanted it.
— FEATURES —
CATALOG
• Up to 10 photos per timepiece, with subject-aware background cleanup
• Detailed specs: caliber, BPH, escapement, jewels, complications, case
• Purchase records, provenance, accessories
• Operating videos to capture each watch in motion
ACOUSTIC TIMEGRAPHER (Curator)
• Detect BPH, daily rate, beat error, and stability from your iPhone mic
• Live oscilloscope-style waveform visualization
• Autocorrelation-based detection for mechanical accuracy
• No external $5,000 machine required
LONG-TERM RATE TRACKING (Curator)
• Manual drift logs and acoustic readings on a single trend chart
• Catch slow degradation before your watch needs service
SERVICE & OH REMINDERS
• Track every overhaul, service, and component change
• Configurable reminders 30 days before each watch is due
ICLOUD SYNC (Curator)
• Quietly synced across all your Apple devices
• Stored only in your private iCloud — the developer cannot see it
COLLECTION INSIGHTS (Curator)
• Total value across multiple currencies
• Maker, era, condition, and operating-status breakdowns
• CSV export for permanent archival
— CURATOR PLAN —
Pocket Watch Box is free for up to 10 timepieces with banner ads. Become a
Curator to unlock unlimited timepieces, every diagnostic tool, iCloud sync,
collection statistics, exports, and an ad-free experience.
• Curator · Monthly (auto-renewable subscription)
• Curator · Yearly (auto-renewable subscription, best value)
Subscriptions automatically renew unless turned off at least 24 hours before
the end of the current period. Manage and cancel from your Apple ID
settings.
— PRIVACY-FIRST —
No accounts. No servers. No tracking. Your collection lives on your device
— and, optionally, in your private iCloud. Audio analyzed by the Acoustic
Timegrapher is processed entirely on-device and is never recorded or
transmitted.
— CRAFTED BY A COLLECTOR —
Built by a pocket watch collector who couldn't find a tool that respected
the craft. Every detail exists because a real collector wanted it.
Terms: https://lineocean.com/pocketwatchbox/
Privacy: https://lineocean.com/pocketwatchbox/
with the depth a serious collector deserves — by sound, by sight, by data.
Pocket Watch Box is a private collection manager designed for enthusiasts
of mechanical pocket watches, antique stopwatches, and vintage chronographs.
Every detail — from the antique typography to the on-device acoustic
timegrapher — exists because a real collector wanted it.
— FEATURES —
CATALOG
• Up to 10 photos per timepiece, with subject-aware background cleanup
• Detailed specs: caliber, BPH, escapement, jewels, complications, case
• Purchase records, provenance, accessories
• Operating videos to capture each watch in motion
ACOUSTIC TIMEGRAPHER (Curator)
• Detect BPH, daily rate, beat error, and stability from your iPhone mic
• Live oscilloscope-style waveform visualization
• Autocorrelation-based detection for mechanical accuracy
• No external $5,000 machine required
LONG-TERM RATE TRACKING (Curator)
• Manual drift logs and acoustic readings on a single trend chart
• Catch slow degradation before your watch needs service
SERVICE & OH REMINDERS
• Track every overhaul, service, and component change
• Configurable reminders 30 days before each watch is due
ICLOUD SYNC (Curator)
• Quietly synced across all your Apple devices
• Stored only in your private iCloud — the developer cannot see it
COLLECTION INSIGHTS (Curator)
• Total value across multiple currencies
• Maker, era, condition, and operating-status breakdowns
• CSV export for permanent archival
— CURATOR PLAN —
Pocket Watch Box is free for up to 10 timepieces with banner ads. Become a
Curator to unlock unlimited timepieces, every diagnostic tool, iCloud sync,
collection statistics, exports, and an ad-free experience.
• Curator · Monthly (auto-renewable subscription)
• Curator · Yearly (auto-renewable subscription, best value)
Subscriptions automatically renew unless turned off at least 24 hours before
the end of the current period. Manage and cancel from your Apple ID
settings.
— PRIVACY-FIRST —
No accounts. No servers. No tracking. Your collection lives on your device
— and, optionally, in your private iCloud. Audio analyzed by the Acoustic
Timegrapher is processed entirely on-device and is never recorded or
transmitted.
— CRAFTED BY A COLLECTOR —
Built by a pocket watch collector who couldn't find a tool that respected
the craft. Every detail exists because a real collector wanted it.
Terms: https://lineocean.com/pocketwatchbox/
Privacy: https://lineocean.com/pocketwatchbox/