Comparison

When · Days That Matter vs ClockWork

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

When · Days That Matter

Features
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When (formerly #DAYS) helps you keep the dates that shape your past, present, and future. Birthdays, anniversaries, and the days a plan begins or ends can all live on one continuous timeline. ONE STORY, MORE THAN ONE DATE Add beginnings, endings, and other moments to the same record, so its full arc stays together—not just a countdown number. SEE TIME CLEARLY Browse what has passed, what is in progress, and what is coming next. When uses each actual date and keeps the exact day count visible. HOME SCREEN WIDGETS Keep important dates and photos on your Home Screen. Each widget size can have its own event and composition. GENTLE, USEFUL REMINDERS Set custom and milestone reminders. Notifications are scheduled locally on your device, with no account required. FREE & PREMIUM Create up to 10 records for free, with iCloud sync and timelines included. Premium unlocks unlimited records, advanced reminders, poster widget layouts, and celebration effects. A one-time purchase unlocks Premium permanently. Your records are designed with privacy in mind. If you enable iCloud, sync is provided by Apple CloudKit. Purchases are handled by Apple’s StoreKit. Questions or feedback? Email aloooone@proton.me Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ClockWork

Features
Read full description

Alarms that ring only on days you actually work. ClockWork follows the official public holidays and makeup workdays of the country you choose, so your alarm stays silent on days off — no more switching it off by hand. ■ SMART ALARMS · Workday alarm: follows holidays and makeup days automatically · Shift alarm: work X days, rest Y days cycles · Interval alarms: repeat reminders inside a time window (stand up, drink water, eye breaks) · Specific date / rotating weeks / yearly (birthdays) / monthly (rent, bills) · Custom shuffle ringtone pool: import songs you love and play one at random each ring · Ringtone trimming: set exact begin/end times, view an energy strip and use a suggested clip · Snooze length and skip-on-leave days ■ CALENDAR · Gregorian + lunar calendar + 24 solar terms; holidays and makeup days at a glance · This month's workdays / rest days, month and year progress · Check-in projects and records (Pro) ■ WORLD CLOCK · Live time differences and day/night for the cities you follow · Time conversion (free): pick any city as the reference and see the rest ■ COUNTDOWNS · Target date, repeat periods and periodic reminders · Assign to small / medium / large widget groups ■ WIDGETS · Monthly/weekly calendar, world clock, countdown and check-in widgets ■ VERSION BACKUP · Automatic daily snapshots, keep 7 / 15 days · Optional sync to your own iCloud — sign in with the same Apple ID on a new device to restore ■ ABOUT PRO The free version includes alarms, calendar and world clock basics, plus a 30-day Pro trial. Pro unlocks countdowns, check-in, interval alarms, leave-day schedules for the ringing calendar and unlimited random alarm sounds. · Lifetime purchase ¥20 (one-time) Privacy first: your data stays on your device by default; backups are optional and go to your own iCloud. No location or contacts collection, no ads, no third-party analytics SDKs.

Screenshots

When · Days That Matter4 screens
ClockWork4 screens

Verdict

The call

The clearest difference is update cadence: ClockWork at every 2 days against When · Days That Matter's every 2 weeks. When · Days That Matter's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. When · Days That Matter sells 1 one-off in-app purchase and ClockWork sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

When · Days That Matter ships an update every 2 weeks, ClockWork every 2 days. The most recent releases landed on November 14, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 4 level
When · Days That Matter versus ClockWork: the parameters behind the verdict, then further details
ParameterWhen · Days That MatterClockWork
PriceFreeFree
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size6 MB79 MB
Age rating4+4+
Developer杰龙 刘德华 周

In-app purchases

1 purchases

When · Days That Matter

One-time1
  • When Premium · Lifetime Access$0.99
1 purchases

ClockWork

One-time1
  • ClockWork Pro (Lifetime)$2.99

Questions

Is When · Days That Matter free?
When · Days That Matter is free to download, with in-app purchases available.
Is ClockWork free?
ClockWork is free to download, with in-app purchases available.
Do When · Days That Matter or ClockWork have ads?
Neither When · Days That Matter nor ClockWork shows ads.
Which is updated more often, When · Days That Matter or ClockWork?
When · Days That Matter ships an update every 2 weeks, and ClockWork every 2 days. Most recently, When · Days That Matter was updated on November 14, 2026 and ClockWork on November 10, 2026.

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