Comparison

Clocktower Time Tracker vs Calume

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

Head to head
About

Clocktower Time Tracker

Features
Read full description

Log your day in a swipe and watch your billable total add up. Clocktower is a visual time tracker for people who bill for their hours: drop your hours as a stack of colored blocks, assign each to a project, and see the total in real time. LOG WITH JUST A SWIPE Swipe up to drop a time block, then tap a project to assign it. No forms, no fiddly start and stop. Add a note if you want one. BUILT TO INVOICE Give each project its own hourly rate and Clocktower turns tracked hours into billable totals automatically. When it is time to bill, filter by project and date range and export a clean timesheet. REMINDERS SO NOTHING SLIPS Turn on daily reminders to log your hours. Your timesheet stops being a guess at the end of the week. KNOW WHERE THE HOURS WENT Reports break your time down by project and by week, with earnings shown in your own currency. START A TIMER IN A TAP Running late on logging? Start a live timer from the app, the home screen widget, or the Lock Screen, and it lands in the right block. ON EVERY DEVICE Clocktower runs on iPhone, iPad, and Mac, and your hours sync privately through iCloud across all of them. There is no account to create and no sign up. PRIVATE BY DESIGN Clocktower has no ads and no tracking. Your time data stays in your own iCloud, not on our servers. Clocktower is free to track up to five projects. Clocktower Pro unlocks unlimited projects. Clocktower Pro is available as an auto-renewing monthly or yearly subscription, or as a one time lifetime purchase. Subscription prices are shown in the app before you buy. Payment is charged to your Apple Account at confirmation. A subscription renews automatically unless you turn off auto-renew at least 24 hours before the current period ends. You can manage or cancel anytime in your Apple Account settings. Terms of Use: https://clocktowerapp.com/terms/ Privacy Policy: https://clocktowerapp.com/privacy/

About

Calume

Features
Read full description

Calume โ€” a time tracking app for people who treat time as a resource. Track every hour with a single tap. See your full day on one timeline. Get honest reports. Built for focus, designed with care. Calume requires a Calume Pro subscription for access. Start with a 7-day free trial; you can cancel anytime. Start a timer with one tap โ€” stopwatch or countdown, your call. Every session lands on your day timeline the moment you stop, building a complete picture of how you spend your time. Plan your day with tasks, attach timers, and watch your schedule unfold in real time. Calume keeps your intentions and your reality side by side so you can see where time actually goes. Track any activity โ€” work, focus, sleep, rest, reading, exercise, creative time, or anything else that matters to you. Assign colors to categories and your timeline becomes instantly readable at a glance. Weekly and monthly reports show hours per activity with clear, honest numbers. Set goals and see your progress day by day. No gamification, no streaks โ€” just the data you need to make better decisions about your time. Calume syncs with Apple Health and your calendar to fill in context automatically. Privacy Policy: https://calume.app/privacy Terms of Use: https://calume.app/terms

Screenshots

Clocktower Time Tracker4 screens
Calume4 screens

Verdict

The call

The clearest difference is update cadence: Clocktower Time Tracker at every 2 days against Calume's fortnightly. Clocktower Time Tracker also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Clocktower Time Tracker sells 3 in-app purchases, starting at $2.99 per month and Calume sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Clocktower Time Tracker ships an update every 2 days, Calume fortnightly. The most recent releases landed on September 14, 2026 and September 23, 2026 respectively.

Scorecard2 real differences ยท 4 level
Clocktower Time Tracker versus Calume: the parameters behind the verdict, then further details
ParameterClocktower Time TrackerCalume
PriceFreeFree
Update frequencyEvery 2 days โ€” betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac, Apple Watch โ€” betteriPhone, iPad
Requires iOS18.017.0 โ€” better
Further details โ€” not scored
Size22 MB23 MB
Age rating4+4+
DeveloperLauri KieksiDANIEL HAVLAS

In-app purchases

3 purchases

Clocktower Time Tracker

Subscriptions2
  • Clocktower Pro Monthly$2.991 Month
  • Clocktower Pro Annual$19.991 Year
One-time1
  • Clocktower Pro (Lifetime)$49.99
3 purchases

Calume

Subscriptions3
  • Chronicle Pro Monthly$8.991 Month
  • Chronicle Pro Yearly7 Days trial$19.991 Year
  • Chronicle Pro Yearly7 Days trial$34.991 Year

Questions

Is Clocktower Time Tracker free?
Clocktower Time Tracker is free to download, with in-app purchases available.
Is Calume free?
Calume is free to download, with in-app purchases available.
Do Clocktower Time Tracker or Calume have ads?
Neither Clocktower Time Tracker nor Calume shows ads.
Which is updated more often, Clocktower Time Tracker or Calume?
Clocktower Time Tracker ships an update every 2 days, and Calume fortnightly. Most recently, Clocktower Time Tracker was updated on September 14, 2026 and Calume on September 23, 2026.

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