CronMaster Visual

Visual Cron Schedule Editor & Next-100 Execution Simulator

Visual cron schedule architecture and validation station. Eliminates cron syntax mistakes by generating and validating 5-field and 6-field cron expressions, simulating the next 100 execution timestamps, and detecting concurrent job collisions.

Purchase License ($19.99) Open Live Web Portal

Real Desktop Application Screens • Captured from the Running Program

100% Native Executable Node-Lock Verified

Head-to-Head Competitor Analysis

Why CronMaster Visual is cheaper, faster, and more secure than Cronitor ($480/yr) / Cronhub ($228/yr).

Comparison Metric	CronMaster Visual	Cronitor ($480/yr) / Cronhub ($228/yr)
License Model & Price	$19.99 (One-Time Perpetual)	$228 to $480/year
Annual Financial Savings	Save $200 - $460/yr every single year
Competitor Drawbacks	Heavy recurring SaaS monitoring fees, web-based tools with no standalone local generation or systemd unit export
Why Vivian Is Better	One-time $19.99 perpetual license, 100% offline desktop tool, instant Kubernetes and systemd timer export
Execution Environment	100% Offline Air-Gapped	Mandatory cloud check-in
Runtime Telemetry	Zero Telemetry (0.00KB sent)	Cloud telemetry & user tracking

Engineering Specifications & Features

Visual 5-field (POSIX) and 6-field (Quartz/Extended) cron schedule builder

Next-100 execution simulator calculating exact wall-clock timestamps taking DST into account

Job collision detector: flags overlapping schedules that could cause server load spikes

Human-readable English translation of complex cron expressions in real-time

Timezone conversion simulator verifying how crons trigger across UTC, EST, PST, and CET

Export schedules to crontab syntax, Kubernetes CronJob YAML, and systemd timer units

Graphical Interface (GUI) Architecture

Interactive time picker dials (Minute, Hour, Day, Month, Weekday), calendar preview heat map, timeline execution list, and export buttons.

Headless CLI Reference & Execution

CronMaster Visual includes a headless command-line binary ready for automation pipelines, cron daemons, and CI/CD runners:

# Headless command execution:
cronmaster --sim-sample --expr '*/15 2-4 * * 1-5' --sim-count 10 --tz UTC
# Cryptographic node-lock activation:
cronmaster --activate YOUR-CROCKFORD-KEY

Core Architecture & Asymmetric Security

Lightweight deterministic C++ time-calculation engine using standard C++20 chrono libraries with zero memory allocations.