# AtomicClock: NTP Time — user reviews > 238 indexed App Store user reviews of AtomicClock by Timo Partl, rated 4.80/5 from 5,497 ratings. - Source: https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews - App overview in markdown: https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049.md - Rating breakdown: 5★ 4,850 · 4★ 457 · 3★ 96 · 2★ 31 · 1★ 63 ## What do users think of AtomicClock? Overall sentiment: positive **Pros** - 🚀 Accurate time - 👍 Highly customizable - 🚀 Precise to the second - 👍 Easy to use - 👍 Helpful for setting watches - 👍 Great for hobbyists and professionals - 👍 Excellent time standard for watches - 👍 Simple and straightforward **Cons** - 🐛 Server connection issues - 🔍 Limited time zone options - 💰 Ads diminish clock view - 🔍 Lacks some advanced features - 🔍 Redundant for some users **Commonly reported bugs** - Crashes on certain iOS versions - Occasional freezing of hands - Countdown timer sound not working **Most requested features** - Add GMT/dual time display - Implement widget support - Add different second hand sounds - Allow setting background color to match watch - Include alarm/timer functionality ## Newest reviews (12 of 238) ### 4/5 — Minute beep is late *2026-03-09, version 3.6.17* Update: I’ve discovered if “Acoustic Ticking” is enabled the 5-second countdown beeps work correctly. Can you explain why on my iPhone 16 pro max (iOS is up to date) the 5-second beep count to the top of the minute is one second late? The beep starts at 56 seconds and the minute long beeps occurs at 1 second after the 0 minute. Thanks ### 4/5 — Minute beep is late *2026-02-17, version 3.6.17* Can you explain why on my iPhone 16 pro max (iOS is up to date) the 5-second beep count to the top of the minute is one second late? The beep starts at 56 seconds and the minute long beeps occurs at 1 second after the 0 minute. Thanks ### 5/5 — Atomic Clock *2025-11-12, version 3.6.12* I did have an app on my iPhone that would sync with servers to get the precise time. When I got my new iPhone that little app was no longer available so I looked for an app that would give me precise time. Atomic Clock does just that and the one time charge was around $6.00 I believe. ### 5/5 — Exactly what I need for accurate time *2025-11-02, version 3.6.10* I use this app to adjust time when we change the time in November and March. And periodically when I notice a clock is not perfectly set. I like each clock set to the exact time. Nice features. I’ve noticed a few people mention ads. It’s an ad at top that you can easily adjust to a very small size. It’s usually the width of a pencil. And the developer should make some money for their time and effort. Great app. Many nice features I appreciate. ### 5/5 — Fine app, shows the Internet Network Time Protocol (NTP) *2025-10-09, version 3.6.8* Fine app, it shows, to 1/100 of a second, the Time per the Internet Network Time Protocol, or NTP. The NTP is coordinated from hundreds of atomic clocks around the world. Everything now runs off NTP: TV, radio, satellites, GPS, air and seaborne navigation, fiber optic communications, everything. ### 4/5 — 1 issue *2025-10-07, version 3.6.8* The app is really good, except trying to pay for the pro version will not allow me to use what is in my account. Always wants to go to the primary of my family account. ### 5/5 — I don’t like when the clock face and hand is pro version *2025-10-06, version 3.6.8* Clock ### 2/5 — Works, but… *2025-09-25, version 3.6.7* Too many ads ### 5/5 — Thank you *2025-09-24, version 3.6.7* Thank you for this app. It is great to set my automatic watches! I use it daily and am glad to support you. A one time charge is perfect! Thanks again. ### 4/5 — Useful *2025-09-24, version 3.6.6* A very helpful utility. Thank you. ### 5/5 — It works well. *2025-09-01, version 3.6.6* I just have one suggestion: please add a louder click every 5 seconds to it similarly to what it does at the start of every minute. Otherwise, this is a very nice and useful clock. ### 5/5 — Great app *2025-08-31, version 3.6.6* I use this app for astronomy, and also for setting and checking my watches. Easy to use, with many features. ## Most critical reviews (10 lowest-rated) ### 1/5 — Useless app *2026-05-06, version 3.6.19* I purchased this app to use on the top of my phone while I’m in the background working and I’m not able to do that. I got a unprofessional message from one of the developer, which is not something of a professional company. I simply requested a refund and have not received it. I will all install your app as you requested, but please assist me with my refund. ### 1/5 — Useless app *2026-04-16, version 3.6.18* I need to be able to toggle my clock to the top of my iPhone and I can’t. Unless I’m able to do that I wasted my money purchasing this app. ### 1/5 — Do track me *2026-03-03, version 3.6.17* 5 seconds in the app asked to track me. Immediately deleted it. ### 1/5 — Was great, now worthless *2025-11-03, version 3.6.10* They smelled the money. Now its unusable. Advert covers clock unless you pay up. Delete! ### 1/5 — Free version not usable *2025-11-03, version 3.6.10* There is a trial version but it’s not usable, because of ads covering the face of the clock. Hard to review. I can hear the ticking though. ### 1/5 — EXCESSIVE Advertising *2025-10-28, version 3.6.10* Excessive advertising, deleted app. ### 1/5 — No button to reject all contents *2025-10-20, version 3.6.10* No possibly to say no to all vendors. The list was soo long I have rather uninstalled it than going through all of them. ### 1/5 — Werbeflut *2025-09-24, version 3.6.7* Werbung zu aufdringlich und überdeckt die angezeigte Uhr. Werbung arbeitet mit Fake Schließenbuttons die beim Betätigen die Werbung öffnen. Lapidare Entwicklerantwort: dann muss man halt die Pro Version kaufen. Meine Antwort: nee, dann wird deinstalliert ### 1/5 — Un assaut de pub!!! *2025-08-02* Une honte, un harcèlement incessant de pubs qui vous cache l'essentiel de ce qui vous intéresse, à savoir le cadran. J'efface immédiatement. **Developer response:** The free version is ad supported and you can collapse the ads banner with a single tap. You can also get rid of the ads permanently with a small one-time purchase - no subscription. This help to keep the lights on and puts food on my table. Reviews like these really make me question what I am doing. Am I such a bad person? La version gratuite est financée par la publicité et vous pouvez masquer la bannière d'un simple clic. Vous pouvez également supprimer définitivement les publicités en effectuant un petit achat unique, sans abonnement. Cela m'aide à subvenir à mes besoins et à nourrir ma famille. Ce genre de critiques me pousse à me poser des questions. Suis-je si malhonnête ? ### 1/5 — Leider wird die Uhrzeit durch die Werbung verdeckt *2025-07-29, version 3.6.4* App ist damit sinnlos! ## Most praised reviews (10 highest-rated) ### 5/5 — A needed reference point. *2026-08-11, version 3.6.22* It works. No issues detected at present… ### 5/5 — Best new Atomic Clock I found on the Internet *2026-08-10, version 3.6.22* While the different features and options are fairly basic, this is the simplest to read, gives you the information you really need, like what time is it so it is now my go to for checking time and setting my analog and mechanical clocks and watches. ### 5/5 — Just works! *2026-07-09, version 3.6.22* Been using for years and decided to pay up… It does just what it’s supposed to… great for setting clocks it is!!! ### 5/5 — I like the split second display. *2026-06-06, version 3.6.22* Split second display is desirable. I used radio timing in the 1960’ while in the USAF. So useful that a Cesium-beam frequency standard was flown regularly to our sites. I don’t NEED it, but enjoy it. Thank you. ### 5/5 — Great iPhone app for working with radio-controlled watches *2026-03-28, version 3.6.18* This app has the most useful handset designs and display options for the iPhone. I use it to gauge timekeeping for all my watches. And I use it in conjunction with the Clockwave and Junghans apps for setting radio-controlled watches. atomic-clock apps I’ve seen for iPhones. I use this many times every day. It’s a keeper!!! ### 5/5 — Very Helpful App *2026-03-09, version 3.6.18* Being able to sync with different time servers is a great feature. This makes setting watches for a synced time very easy! The unlock for premium gives a lot of options. Simple and clean with many options to customize. ### 5/5 — Great App *2026-02-12, version 3.6.16* It helps me fine tune my Grandfather clock. ### 5/5 — The best *2026-02-01, version 3.6.16* I have used this app for several years. It is fantastic and I use it daily to set and track the accuracy of my watches. ### 5/5 — 1 out of 3!… *2025-12-29, version 3.6.13* One of my top three favorite atomic clock apps!!! ### 5/5 — Brilliant App *2025-11-21, version 3.6.13* Brilliant time keeper.. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*