root@cronparser:~# ./cron-toolkit --boot

Cron schedules, decoded on Android.

A terminal-style toolkit for system administrators, DevOps engineers, and backend developers who need to parse, build, and document cron expressions without guessing.

Get the app Try the parser

5-field: standard cron format
Offline: works without accounts
API 24+: Android 7.0 and later

   ____ ____   ___  _   _
  / ___|  _ \ / _ \| \ | |
 | |   | |_) | | | |  \| |
 | |___|  _ <| |_| | |\  |
  \____|_| \_\\___/|_| \_|

[ OK ] Parser module loaded

[ OK ] Builder module loaded

[INFO] Ready for operations

$ ./cron-parser

Check a cron expression before it reaches production.

INPUT CRON EXPRESSION

root@cronparser:~#

SELECT OPERATION

Built around the cron work you actually do.

Cron Parser

Translate standard 5-field cron expressions into plain English with immediate validation and readable error states.

Cron Builder

Assemble schedules through an interactive builder, preview the generated expression, then copy the result into your job definition.

Cron Manual

Keep syntax, special characters, examples, best practices, and debugging reminders in your pocket.

SYSADMIN FLOW

From mystery string to deployable schedule.

Paste a cron entry from a server, verify what it means, adjust the schedule with the builder, and copy the result. The app keeps the interface familiar with monospace type, command prompts, status messages, and dark terminal colors.

Parse Understand expressions like 0 2 * * 1-5 without mental math.
Build Select minutes, hours, days, months, and weekdays with a guided UI.
Copy Move the generated expression into scripts, monitoring jobs, or documentation.

$ man cron

The cron reference stays close.

Field ranges, operators, common schedules, and operational tips are available inside the app, so you can double-check syntax even when you are away from your workstation.

+------------- minute (0 - 59)
| +----------- hour (0 - 23)
| | +--------- day of month (1 - 31)
| | | +------- month (1 - 12)
| | | | +----- day of week (0 - 6)
| | | | |
* * * * *

ANDROID TOOLKIT

Ready for your admin phone.

Designed for Android 7.0 and later. Built with Kotlin and Jetpack Compose, packaged as a focused cron utility for everyday operations.

View build guide