NN Clock vs Flip Clock 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NN Clock
This application offers a straightforward and powerful alarm clock experience with an elegant analog interface. It simplifies alarm setting and management, allowing for custom wake-up sounds and background changes. The app also integrates with HealthKit for sleep tracking.
- Set alarms by moving alarm hand
- Swipe to dismiss alarms
- Start timer by turning ring
- Customizable background images
- HealthKit sleep registration
- 8 built-in alarm sounds
- Music library integration
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The No Nonsense Alarm Clock was made to be simple and easy to use, yet powerful and flexible. What is does, it does good: "Perfect minimal analog clock I'm a huge fan of analog clocks with good alarms for iPhone and this one is in my top 5. I currently have 23 ( just counted) and many aren't clean, simple and just good, this is a keeper. "Awesomely Simplistic This app has an elegant watch interface and simply and dependably does what it's supposed to. More wake-up tones would be welcome, but adding to this app might defeat its appeal. Highly recommended! ... The longer I have had this app, the better it gets. Very intuitive and increasingly feature-rich I have discovered." "KISS Approach - it just works Well, this application is such a find. It keeps everything at the most basic level and in doing so it is pure genius. Couldn't ask for anything more even though it is so "less" than what the other apps try to promise" "Simple, works, looks great. I'm embarrassed to say how much I've spent buying alarm clock apps. This is by far the best one, and it is free. It just works. Looks great, easy to set the alarm or multiple alarms. Enormous snooze button. Very well done!" Key features: - Set an alarm by simply moving the alarm hand - Choose between 3 alarms and alarm-off by swiping the alarm window - Start a timer/countdown by turning the ring - Change background images (new) - Register sleep in HealthKit When the alarm goes off you don't have to choose between two buttons - there is only one: Snooze. The alarm sound can be chosen from 8 different build-in alarms, which all work even when the app is in the background or the device is suspended. When the app is in the foreground it can play any song you select from your Music library - slowly fading in if you choose. The brightness of the screen is easily adjusted by sliding two fingers up or down the main view. The Alarm Clock looks great on your night stand.
Flip Clock 3D
Enhance your workspace with a realistic 3D mechanical flip clock. This app helps improve focus and productivity during work or study sessions by providing a clear time display. Customize with various fonts and themes, and utilize the alarm feature when the app is active.
- Vivid 3D mechanical components
- Adjustable viewing angles
- 12/24 hour mode switching
- Multiple font and theme options
- Foreground alarm functionality
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This app uses high quality 3D models to bring beautiful machanical style flip clock to your screen. Put it on your desk, you can easily track time. When you're working or studying, it's great to improve your productivity and help you get focus. Key features: # vivid 3D machanic components and gears # you can view the clock at different angles # switch between 12 hour or 24 hour mode # multiple fonts and themes # alarm functionality (works only when app is in foreground)
Screenshots
Verdict
The clearest difference is rating: Flip Clock 3D at 4.8 against NN Clock's 3.8. Flip Clock 3D also leads on update cadence (weekly vs every 6 months) and review sentiment (100% vs 77%). NN Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume 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
Both are free to download. Flip Clock 3D sells 1 one-off in-app purchase. NN Clock asks for nothing beyond the download.
Flip Clock 3D holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 36 and 25 respectively. Written reviews point the same way: 77% of NN Clock's written reviews are positive against 100% of Flip Clock 3D's.
NN Clock ships an update every 6 months, Flip Clock 3D weekly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.
| Parameter | NN Clock | Flip Clock 3D |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (36 ratings) | 4.8 (25 ratings) — better |
| Positive reviews | 76.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 36 — better | 25 |
| Update frequency | Every 6 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 7 MB | 206 MB |
| Age rating | 4+ | 4+ |
| Developer | Jon Juhl Nørrelykke | 乃君 黄 |
Customer experience
NN Clock
Flip Clock 3D
Bugs and requests
NN Clock
Reported bugs
7 issues- Setting background images doesn’t work - no OK or apply button
- Error message saying alarm could not be set
- Cannot set background, app hangs on cropping screen
- Green needle does not align perfectly with white marks
- App dims out in the middle of the night
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- Songs from iTunes library don't play
- Alarm only works when phone is unlocked and in the app
Requested features
11 requests- Update app to fix background image setting
- Fix green needle alignment issue
- Add multiple alarms at the same time
- Add snooze button functionality
- Add repeating days option for alarms
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- Include vibration option
- Option to leave screen on all night
- More watch face choices
- Color selection for clock display
- Option to disable snooze
- More wake-up tones
Flip Clock 3D
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NN Clock
No in-app purchases
Flip Clock 3D
- Unlock all contents$1.99
Questions
Is NN Clock free?
Is Flip Clock 3D free?
Which has better reviews, NN Clock or Flip Clock 3D?
Do NN Clock or Flip Clock 3D have ads?
Which is updated more often, NN Clock or Flip Clock 3D?
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