Comparison

Alarm Clock HD vs Nightglow

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

Nightglow

Transform an old iPhone into a beautiful, always-on bedside clock. Offers analog and digital display modes with customizable colors, brightness, and optional smart charging to preserve battery health. Designed for simplicity and elegance, it gives retired devices a new purpose.

Highlights
  • Always-on clock display
  • Analog and digital modes
  • Customizable clock color
  • Adjustable brightness
  • Optional smart charging
  • Local weather display
Read full description

Night Clock gives your old iPhone a beautiful second life. Set that spare or retired iPhone on your nightstand or desk, turn it sideways, and it becomes a gorgeous always-on clock — inspired by iOS StandBy mode, but delightfully simple. No accounts. No setup. No clutter. Just open it and it works. THREE CLEAN MODES • Analog — a classic clock face with local weather and battery status • Digital 12h — a full-screen 7-segment LED display of hours and minutes • Digital 24h — a 7-segment display with hours, minutes, and seconds SIMPLE BY DESIGN • Swipe left or right to switch modes • Swipe up or down anywhere to set the perfect nighttime brightness • Remembers your last mode, so it's ready the moment you open it • Screen stays on, so the time is always there when you glance over • Nothing pops up at launch — weather and Home access are asked for only when you turn those features on MAKE IT YOURS • Weather in °C or °F — set to your region by default, yours to change • Pick the clock color with a slider and watch it change live • Choose when the battery indicator appears, or keep it always on • Reset every setting in one tap SMART CHARGING (optional) Keep your old battery healthy. Pick a Home-compatible smart plug that powers the charger, and Night Clock switches it on when the battery drops to your chosen level and off when it's charged enough — so the phone isn't held at 100% around the clock. MADE FOR OLD DEVICES Don't retire your lovely old iPhone in a drawer. Night Clock runs beautifully on older models and turns them into the perfect bedside or desk clock — useful, elegant, and effortless. That's it. A clock that does one thing wonderfully. COMPATIBILITY & FEATURES BY DEVICE Some features depend on how new your iPhone is. The clock itself works on every supported device — the extras switch on for newer models: • iPhone 8 and newer — full experience, including local weather and optional smart charging through Home. iPhone 8 is the oldest model that supports weather and Home. • iPhone 7, iPhone 7 Plus, iPhone 6s, iPhone 6s Plus, and iPhone SE (1st gen) — the clock, color, brightness, and battery features work great, but weather and Home are not available on these models, so those features are automatically hidden. Either way, your old iPhone makes a wonderful bedside clock.

Screenshots

Alarm Clock HD4 screens
Nightglow3 screens

Verdict

The call

The clearest difference is in-app purchases: Nightglow at none against Alarm Clock HD's 11. Nightglow also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.6). Alarm Clock HD's advantage is review sentiment (32% vs 0%) and ratings volume (104K vs 3). On price, rating 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. Nightglow asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Alarm Clock HD holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Alarm Clock HD has 104K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 32% of Alarm Clock HD's written reviews are positive against 0% of Nightglow's.

UpkeepUpdate frequency

Alarm Clock HD ships an update fortnightly, Nightglow every 2 months. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Alarm Clock HD versus Nightglow: the parameters behind the verdict, then further details
ParameterAlarm Clock HDNightglow
PriceFreeFree
Rating4.5 (104K ratings) — better4.3 (3 ratings)
Positive reviews31.6% of reviews — better0.0% of reviews
Number of ratings104K — better3
Update frequencyFortnightly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size234 MB1 MB
Age rating4+4+
DeveloperImpala StudiosBoris Vanin

Customer experience

Alarm Clock HD

All ratings104,303 ratings
Positive88.4%
Neutral4.7%
Negative6.9%
Written reviews933 reviews
Positive31.6%
Neutral8.1%
Negative60.2%

Nightglow

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
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

Nightglow

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
None

Nightglow

No in-app purchases

Questions

Is Alarm Clock HD free?
Alarm Clock HD is free to download, with in-app purchases available.
Is Nightglow free?
Nightglow is free to download, with no in-app purchases.
Which has better reviews, Alarm Clock HD or Nightglow?
Alarm Clock HD is rated higher. Alarm Clock HD averages 4.5 out of 5 from 104K ratings, while Nightglow averages 4.3 from 3 ratings.
Do Alarm Clock HD or Nightglow have ads?
Alarm Clock HD shows ads; Nightglow does not.
Which is updated more often, Alarm Clock HD or Nightglow?
Alarm Clock HD ships an update fortnightly, and Nightglow every 2 months. Most recently, Alarm Clock HD was updated on October 31, 2026 and Nightglow on October 24, 2026.

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