Cron Lab Downloads & RevenueCron Lab: Crontab Editor · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperJohn Haas
CategoryDeveloper Tools
PriceFree
Released
Rating★ 5.0 (2)
Version1.0.3
Age rating4+
First seen by us
12 Oct 2026
12 Oct 2026Cron Lab: Crontab Editor update history & changes
Last change · 4 events since 6 Aug 2026Full timeline ↓🆕First spotted by AppInsider🆕Its developer released another app: Indigo: Retro Game Emulator📦Version 1.0.3
Full timeline · 4 events
- 🆕Cron Lab: Crontab Editor first spotted by AppInsiderUnited States (found via developer)
- 🆕Cron Lab: Crontab Editor: its developer released another app: Indigo: Retro Game Emulator
- 📦Cron Lab: Crontab Editor version 1.0.3Fixes schedules that were read wrongly, including 'mon-fri 9am'.
Reads more of the ways people write schedules: "every quarter hour", "at 1730", "at 9 and 5 on weekdays", "each day at eight thirty".
Clearer plain-English descriptions, especially for time windows and repeating steps.
Says why it can't build a schedule when cron genuinely can't express it.… more - 🆕Cron Lab: Crontab Editor released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
2 ratings
Measured
Cron Lab: Crontab Editor on the App Store
App details
App ID
6783486115
Publisher
John Haas
On the store since
Aug 2026
Under a year
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
21 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
2 ratings
Measured
Ratings
2
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Developer Tools apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Cron Lab: Crontab Editor
Cron Lab reads and writes cron schedule expressions. Type one like "*/15 9-17 * * 1-5" and it tells you, in plain English, what it means, when it will run next in your timezone, and what might quietly break it.
Cron Lab is free. Four features (Convert, In words, backup and restore, and the Home Screen widget) are part of Cron Lab Pro, a one-time $0.99 in-app purchase.
Everything else listed below is free, and there is no subscription.
FREE
• Plain-English translation. Every expression becomes a clear sentence as you
type, with a field-by-field breakdown below it.
• Next runs. Accurate, DST-safe previews for any IANA timezone, in 12- or
24-hour time.
• Visual builder. Tap together a valid expression: every N minutes, specific
days, ranges, steps, and lists.
• Schedule doctor. Explains why an expression never runs (February has no
30th), warns about leap-year-only dates, and flags the day-of-month /
day-of-week OR rule that surprises almost everyone.
• Examples and reference. A categorized library of common schedules and a
built-in syntax cheat sheet.
• Your library. Save and label expressions, and browse recent history.
CRON LAB PRO (a one-time $0.99 in-app purchase)
• Convert. Turn a standard crontab line into Quartz, Spring @Scheduled, AWS
EventBridge, Jenkins, Kubernetes CronJob, or GitHub Actions. Handles the
tricky parts (seconds, day-of-week numbering, the "?" rule) and includes
copy-ready snippets, like the full CronJob YAML.
• In words. Type "every weekday at 9am" or "the 1st of the month at noon" and
get the matching expression.
• Backup and restore. Save your whole library to a JSON file and load it back.
• Home Screen widget. Pin a schedule to see its meaning and next run without
opening the app.
PRIVATE BY DESIGN
• No ads, no tracking, no account. Your schedules never leave your device.
• Works completely offline.
• Clean, minimal design with full light and dark mode.
• VoiceOver labels, legible contrast, large tap targets.
• Supports 5-field crontab and 6-field (seconds) expressions, names (JAN-DEC,
SUN-SAT), ranges, steps, lists, and @shortcuts (@daily, @reboot, and more).
Cron Lab Pro is a one-time $0.99 in-app purchase, not a subscription.
Cron Lab is free. Four features (Convert, In words, backup and restore, and the Home Screen widget) are part of Cron Lab Pro, a one-time $0.99 in-app purchase.
Everything else listed below is free, and there is no subscription.
FREE
• Plain-English translation. Every expression becomes a clear sentence as you
type, with a field-by-field breakdown below it.
• Next runs. Accurate, DST-safe previews for any IANA timezone, in 12- or
24-hour time.
• Visual builder. Tap together a valid expression: every N minutes, specific
days, ranges, steps, and lists.
• Schedule doctor. Explains why an expression never runs (February has no
30th), warns about leap-year-only dates, and flags the day-of-month /
day-of-week OR rule that surprises almost everyone.
• Examples and reference. A categorized library of common schedules and a
built-in syntax cheat sheet.
• Your library. Save and label expressions, and browse recent history.
CRON LAB PRO (a one-time $0.99 in-app purchase)
• Convert. Turn a standard crontab line into Quartz, Spring @Scheduled, AWS
EventBridge, Jenkins, Kubernetes CronJob, or GitHub Actions. Handles the
tricky parts (seconds, day-of-week numbering, the "?" rule) and includes
copy-ready snippets, like the full CronJob YAML.
• In words. Type "every weekday at 9am" or "the 1st of the month at noon" and
get the matching expression.
• Backup and restore. Save your whole library to a JSON file and load it back.
• Home Screen widget. Pin a schedule to see its meaning and next run without
opening the app.
PRIVATE BY DESIGN
• No ads, no tracking, no account. Your schedules never leave your device.
• Works completely offline.
• Clean, minimal design with full light and dark mode.
• VoiceOver labels, legible contrast, large tap targets.
• Supports 5-field crontab and 6-field (seconds) expressions, names (JAN-DEC,
SUN-SAT), ranges, steps, lists, and @shortcuts (@daily, @reboot, and more).
Cron Lab Pro is a one-time $0.99 in-app purchase, not a subscription.
Latest updates
1.0.3
Fixes schedules that were read wrongly, including 'mon-fri 9am'.
Reads more of the ways people write schedules: "every quarter hour", "at 1730", "at 9 and 5 on weekdays", "each day at eight thirty".
Clearer plain-English descriptions, especially for time windows and repeating steps.
Says why it can't build a schedule when cron genuinely can't express it.
