Comparison

Clock vs OpenAlarm

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

Head to head
About

Clock

Manage your time effectively with customizable alarms, world clock, stopwatch, and countdown timer. Wake up on time, track activities, and stay connected across time zones with this easy-to-use utility.

Highlights
  • Customizable alarms
  • World time zones
  • Stopwatch with laps
  • Countdown timer
  • Repeat alarms on selected days
  • Adjustable snooze duration
Features
Read full description

Alarm Clock & Timer is a simple, fast, and reliable time management app designed to help you stay on schedule every day. Whether you need to wake up on time, track workouts, or check world time zones, this app gives you everything in one clean and easy-to-use interface. Alarm Clock Wake up your way with powerful and customizable alarm features: • Create multiple alarms • Repeat on selected days • Adjustable snooze duration • Choose different ring tones • Manage, edit, or delete alarms easily • Reliable daily wake-up performance World Clock Stay connected across time zones: • Add multiple cities • View current time worldwide • Perfect for business, travel, and remote teams Stopwatch Track every second with precision: • Accurate time tracking • Lap time recording • Easy start, stop, and reset controls Timer Perfect for workouts, study sessions, cooking, or productivity: • Simple countdown timer • Quick setup • Reliable alert when time ends This app contains subscription Monthly pro at $1.99 and Yearly pro at $9.99 to use ads free versions of the premium app which can cancel anytime. To learn about our privacy policy, please visit: https://bhaskarrao2209.blogspot.com/2025/12/privacy-policy.html For our terms of use, please visit: https://bhaskarrao2209.blogspot.com/2025/12/terms-of-service.html All-in-one clock app with smart alarms, world clock, stopwatch with laps, and easy countdown timer.

About

OpenAlarm

Features
Read full description

OpenAlarm is the alarm clock for mornings when a normal alarm is too easy to silence. Build alarms around the way you actually wake up: • Require one or more disarm challenges: Math, Memory, Steps, Shake, or Scan • Set a snooze budget so snoozing eventually stops being an option • Enable a wake-up check that asks whether you are still awake a few minutes later • Schedule repeating weekday and weekend alarms • Skip or move one occurrence without changing the repeating schedule • Start nap countdowns and pause or extend them • Control active naps from the Lock Screen and Dynamic Island OpenAlarm uses Apple’s alarm system so scheduled alarms remain dependable. Your alarms and settings stay on your device. There are no accounts, ads, analytics, or tracking. OpenAlarm is free and open source.

Screenshots

Clock4 screens
OpenAlarm4 screens

Verdict

The call

The clearest difference is in-app purchases: OpenAlarm at none against Clock's 2. OpenAlarm also leads on ads (none vs shown) and update cadence (every 8 days vs every 2 months). Clock's advantage is rating (3.4 vs 3.0) and device support (3 vs 1). On price and ratings volume 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. Clock sells 2 in-app purchases, starting at $1.99 per month. OpenAlarm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Clock holds the better App Store score, 3.4 against 3.0. Both are backed by a comparable volume of ratings — 7 and 10 respectively.

UpkeepUpdate frequency

Clock ships an update every 2 months, OpenAlarm every 8 days. Both last shipped on October 24, 2026.

Scorecard6 real differences · 3 level
Clock versus OpenAlarm: the parameters behind the verdict, then further details
ParameterClockOpenAlarm
PriceFreeFree
Rating3.4 (7 ratings) — better3.0 (10 ratings)
Number of ratings710 — better
Update frequencyEvery 2 monthsEvery 8 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size39 MB104 MB
Age rating4+4+
DeveloperBhaskar RaoDaniel Gretzke

In-app purchases

2 purchases

Clock

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$9.991 Year
None

OpenAlarm

No in-app purchases

Questions

Is Clock free?
Clock is free to download, with in-app purchases available.
Is OpenAlarm free?
OpenAlarm is free to download, with no in-app purchases.
Which has better reviews, Clock or OpenAlarm?
Clock is rated higher. Clock averages 3.4 out of 5 from 7 ratings, while OpenAlarm averages 3.0 from 10 ratings.
Do Clock or OpenAlarm have ads?
Clock shows ads; OpenAlarm does not.
Which is updated more often, Clock or OpenAlarm?
Clock ships an update every 2 months, and OpenAlarm every 8 days. Most recently, Clock was updated on October 24, 2026 and OpenAlarm on October 24, 2026.

Other comparisons