Kaikoku: Pocket Watch Alarm
Fantasy clock, timer & alarm
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
From a junior-high notebook, unearthed and unsealed: an arcane pocket watch for grown-ups.
Kaikoku is a classic × chuuni pocket-watch alarm app — built from a notebook the developer wrote in junior high and rediscovered decades later.
An antique pocket watch hangs from a real-physics chain in your palm. Snap the hunter lid shut and power gathers; open it and the day is unsealed. By night, wind the dial to cast one of twelve zodiac arcana. By day the sun seals your sorcery — six solar arts answer instead. Shut the lid and wind, and six seal-curses act upon the lid itself.
Rites await: cover the sensor to summon a fleeting night; every hour the watch examines its keeper by Face ID — strangers are shown a magic circle bearing an inviting sigil. Spin too far — thirty-six turns, one full day of the arcane world — and the chain sunders, until you resummon the watch by rite.
It keeps real time too: alarms with six bells, a magic hourglass timer, a chronograph with Live Activities, an Apple Watch companion that resonates with your pocket watch, widgets, StandBy, and a wall-pinned grimoire recording your deeds and chants.
Every spell, art, and bell is free. Ads help keep the watch wound — forge the Pact (lifelong or monthly) to still them for good, or invoke a brief Farsight rite to send them away for a while.
Time is no stream, but an illusion dwelling in the heart. The one true magic is to carve the now.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Minor bug fixes and stability improvements throughout.
The developer, 株式会社Cavemen.jp, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CAVEMEN JP, K.K.
- Size
- 32.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Incense Offering (Fine) $2.99
- Invited Pact $1.99
- Lifetime Pact $2.99
- Incense Offering (Small) $0.49
- Incense Offering (Grand) $5.99
- Copyright
- © 2026 CAVEMEN JP, K.K.