Comparison

Alarm Clock HD vs PreventPro

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

Head to head
About

Alarm Clock HD

Wake up gently with your favorite music or sounds using this advanced alarm clock. It offers customizable nightstand displays, sleep tracking, and a sleep timer to help you unwind. Enjoy features like local weather and an instant flashlight, with an option to go ad-free via subscription.

Highlights
  • Unlimited alarms with Apple Music or custom sounds
  • Sleep tracking
  • Customizable nightstand display
  • Sleep timer
  • Local weather information
  • Instant flashlight
  • Screen saver for OLED displays
Features
Read full description

Sleep better and start the day with your favorite tunes. Are you curious to see how much you slept? Then, track your sleep in the app. Alarm Clock HD is the app to help you enjoy restful sleep and wake up worry-free. How Alarm Clock HD helps you sleep better: • Unlimited Alarms: Apple Music or Alarm Sounds • Customize Nightstand display colors • Sleep Timer • Local Weather Information • Instant Flashlight - shake the device • Full watchOS 2 support • Screen Saver - for devices with OLED display WAKE UP ON TIME: Proper Alarm Settings • Keep the app open and running always to have your alarm go off and play the sounds you’ve set for ‘Music'. When your app is open, you can use the volume slider within the app. When the app is in the background, use the device volume to set your volume. • Make sure your battery is charged and have your notifications turned on before you go to sleep, when the battery level goes below 30% it might not sound. This is due to prevent the device from dying and the alarm not going off. • Keep your Apple Music available on your device The music you can select consists of everything you have available on your ‘Apple Music' app on your device. If the music is saved on your iCloud, and not on the device itself, it won’t be available. NEVER MISS AN ALARM When you close the app and do not have it running in the background, the alarm will use the device volume instead and play the notification sound system. The app will close itself automatically after 10 hours of inactivity. This is due to prevent the device from dying and the alarm not going off. When your device is muted, set to ‘Do Not Disturb’, or your device volume is set to 0, the alarm won’t play properly. It will still show the notification without any sound. This is due to Apple’s restrictions as we are unable to access the app settings when the app is closed, only when it’s open or running in the background. SUBSCRIPTION IN ALARM CLOCK HD Upgrade to a Premium Membership and receive the following ongoing value: • Ad-Free • News & X feeds (Twitter) • Premium Customer Support Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy >> WE LOVE FEEDBACK As always, we appreciate your feedback. Please email us at support@impalastudios.com with any suggestions or questions, our support team is ready and happy to help. WAKE UP YOUR WAY, EVERY DAY

About

PreventPro

This app helps new homeowners proactively manage their property. It offers structured checklists for monthly inspections, tools to calculate the financial impact of delaying repairs or dealing with pests, and a budget builder for long-term maintenance planning.

Highlights
  • Monthly home inspection checklists
  • Pest risk financial impact calculator
  • Cost of delaying repairs calculator
  • Prevention budget builder
  • Professional inspection report export
Features
Read full description

Built for Homeowners Your first year in a new home is overwhelming. PreventPro gives you structure. Instead of reacting to problems, you plan for them. Run monthly inspections. Estimate what waiting actually costs. Budget for prevention before damage compounds. Self-Inspection System Know what to look for. • Crawlspace • Attic • Kitchen & Baths • Exterior Follow a structured checklist built for real homeowner risk. Export professional inspection reports anytime. Pest Risk Calculator Rodents. Termites. Roaches. Carpenter ants. Select the pest. Choose how long you wait. See the projected financial impact. Small problems compound. PreventPro shows you how fast. Cost of Waiting Calculator What happens if you delay repairs? Enter: • Fix cost today • Months delayed • Worsening rate • Living with it cost See the real total impact. No guesswork. Just math. Prevention Budget Builder Plan inspections. Estimate long-term maintenance. Build an annual protection strategy. Your home is an asset. Treat it like one. Designed for: • First-time home buyers • New homeowners • Young families • Military relocations • Real estate buyers post-closing

Screenshots

Alarm Clock HD4 screens
PreventPro4 screens

Verdict

The call

The clearest difference is ads: PreventPro at none against Alarm Clock HD's shown. PreventPro also leads on rating (5.0 vs 4.5). Alarm Clock HD's advantage is ratings volume (104K vs 1) and update cadence (fortnightly vs every 5 weeks). On price, in-app purchases, monetization model 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. Alarm Clock HD sells 11 in-app purchases, starting at $1.49 per month and PreventPro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PreventPro holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Alarm Clock HD has 104K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Alarm Clock HD ships an update fortnightly, PreventPro every 5 weeks. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
Alarm Clock HD versus PreventPro: the parameters behind the verdict, then further details
ParameterAlarm Clock HDPreventPro
PriceFreeFree
Rating4.5 (104K ratings)5.0 (1 ratings) — better
Positive reviews31.7% of reviews—
Number of ratings104K — better1
Update frequencyFortnightly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.6
Further details — not scored
Size234 MB5 MB
Age rating4+4+
DeveloperImpala StudiosNewville Distribution LLC

Customer experience

Alarm Clock HD

All ratings104,303 ratings
Positive88.4%
Neutral4.7%
Negative6.9%
Written reviews928 reviews
Positive31.7%
Neutral8.2%
Negative60.1%

PreventPro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Alarm Clock HD

Reported bugs

4 issues
  • Alarm randomly snoozing itself
  • Alarm not working when phone is muted
  • Alarm sound not playing
  • Alarm screen freezing/crashing

Requested features

4 requests
  • 24-hour clock option
  • More alarm sounds/tones
  • Ability to use own music files
  • Do not disturb mode

PreventPro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

Alarm Clock HD

Subscriptions11
  • Premium member - 1 month$1.491 Month
  • Premium Features - Weekly$1.997 Days
  • Premium Features - Monthly3 Days trial$2.591 Month
Show 8 more
  • Upgrade to Premium Features$5.496 Months
  • Premium Yearly$9.991 Year
  • Premium Yearly3 Days trial$11.991 Year
  • Upgrade Your Alarm Clock3 Days trial$14.991 Year
  • Premium yearly$19.991 Year
  • Premium yearly3 Days trial$19.991 Year
  • Premium yearly3 Days trial$24.991 Year
  • Premium yearly3 Days trial$29.991 Year
1 purchases

PreventPro

One-time1
  • PreventPro Pro – Lifetime Access$29.99

Questions

Is Alarm Clock HD free?
Alarm Clock HD is free to download, with in-app purchases available.
Is PreventPro free?
PreventPro is free to download, with in-app purchases available.
Which has better reviews, Alarm Clock HD or PreventPro?
PreventPro is rated higher. Alarm Clock HD averages 4.5 out of 5 from 104K ratings, while PreventPro averages 5.0 from 1 ratings.
Do Alarm Clock HD or PreventPro have ads?
Alarm Clock HD shows ads; PreventPro does not.
Which is updated more often, Alarm Clock HD or PreventPro?
Alarm Clock HD ships an update fortnightly, and PreventPro every 5 weeks. Most recently, Alarm Clock HD was updated on October 20, 2026 and PreventPro on October 18, 2026.

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