크론 표현식 빌더
Build & preview cron schedules
Free · Designed for iPad. Not verified for macOS.
A Korean-language tool for editing numeric five-field Unix cron expressions (minute, hour, day of month, month, weekday). It does not execute jobs or guarantee server execution.
Supports numbers, *, comma lists, inclusive ranges and positive steps after * or ranges; 0 and 7 mean Sunday. Names, seconds, years, Quartz special tokens, Jenkins H and AWS EventBridge expressions are unsupported. Restricted day fields use OR; a day field containing * uses AND. Check the target cron implementation.
Includes 16 presets, Korean explanations, a syntax reference, local history, bookmarks, copying and OS sharing.
Preview calculation uses the device local timezone. UTC only changes the display of the same instants; it does not reinterpret a UTC server schedule. Missing DST times are skipped and repeated times appear twice with their offsets. Server clock-change policies can differ.
Up to five times are searched within 28 years or 200,000 minute checks. Impossible dates and search limits are distinguished. An empty preview does not prove a server will never run.
Ads, tracking authorization requests and runtime font downloads have been removed. Calculations and history operate on the device. The UI is Korean; this English listing is a translation, not an English UI promise.
Ratings & Reviews
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v1.0.8 Update
Fixed raw-input validation, day-field OR matching and range/step handling. Clarified that UTC changes the display of device-local calculations. Existing history and bookmarks are preserved. Removed ads and tracking authorization requests.
The developer, HeungYeol Kim, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HeungYeol Kim
- Size
- 19.3 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- Korean
- Age Rating
4+
- 4+
- Copyright
- © 2026 ddojai