SailBot vs AtomicClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SailBot
Automate sailing race starting signals with this advanced air horn system. Connect via Bluetooth to your iOS device to manage custom start sequences, choose from pre-set ISAF options, or create your own. Ideal for sailing schools, yacht clubs, and race committees seeking a portable and reliable solution.
- Bluetooth connectivity
- Automated starting sequences
- Customizable start sequence editing
- Pre-set ISAF starting sequences
- Portable and durable construction
- iOS app control
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Start your sailing races with style! Connect over Bluetooth to SailBot™, the most advanced air horn system for starting sailing races. Sailbot™ is simply the most flexible and convenient way to automate the audible signals at the start of any sailing race. Sailing schools, yacht clubs, and sailing teams will love the ease of use and durability of construction. Compact, robust, reliable and ready for action; SailBot™ was designed from the ground up to be an integral part of any RC toolkit. Make your Race Committee job easier by automating your starting sequences today! SailBot™ is a self-contained and portable unit that connects to your iPhone or iPod Touch by Bluetooth technology. SailBot™ is the only automatic sailboat race start controller that offers custom start sequence editing and modification. Choose from one of the many included ISAF starting sequences, modify them or create your own. The options are limitless. All software for controlling the horn is contained in the app on your iPhone or iPod Touch so updates are automatic and your device is always up to date. Say goodbye to hard-wired sequences forever! Requires Bluetooth 4.0: iPhone 4s or greater, and iPad 3 or greater
AtomicClock
This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.
- Precise time from NTP servers
- Customizable clock faces
- Select or add time servers
- Local and UTC views
- 12/24 hour modes
- Customizable time format
- Acoustic ticking
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Check precise NTP reference time at a glance. AtomicClock helps you set watches, wall clocks, cameras, and other devices, compare local time with UTC, and follow moments when every second matters. Clear analog and digital time AtomicClock displays current time from NTP servers that reference atomic clocks. Choose a predefined server or add your own, then view local or UTC time in a clean analog or digital clock. Customize your reference clock • Switch between 12-hour and 24-hour time • Customize the time format • Choose from multiple clock faces and hands • Use a smooth, fluid second hand • Add acoustic ticking or the Greenwich Time Signal • Tap the screen to hide information and controls, freeze the display, or mute ticking Details for precise time checks View technical NTP information, including round-trip time and server stratum. Whether you are checking a timestamp, preparing a camera, aligning a wall clock, or setting a watch by hand, the seconds remain clear and easy to follow. AtomicClock is free to use. AtomicClock Pro is available as a one-time purchase with no subscription. It unlocks your preferred clock face, hands, and font, removes ads, and includes upcoming Pro features. AtomicClock displays NTP reference time for comparison and does not change your device’s system time. Results can vary with the selected server, network conditions, and device behavior.
Screenshots
Verdict
The clearest difference is in-app purchases: SailBot at none against AtomicClock's 1. SailBot also leads on ads (none vs shown) and review sentiment (100% vs 84%). AtomicClock's advantage is update cadence (every 3 weeks vs every 8 months) and ratings volume (5.5K vs 5). On price 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. AtomicClock sells 1 one-off in-app purchase. SailBot asks for nothing beyond the download.
AtomicClock holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 100% of SailBot's written reviews are positive against 84% of AtomicClock's, so the app with the better star average is not the one people write more warmly about.
SailBot ships an update every 8 months, AtomicClock every 3 weeks. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.
| Parameter | SailBot | AtomicClock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) | 4.8 (5.5K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 84.2% of reviews |
| Number of ratings | 5 | 5.5K — better |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 22 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Slope LLC | Timo Partl |
Customer experience
SailBot
AtomicClock
Bugs and requests
SailBot
Not enough reviews yet to summarise bugs or requests.
AtomicClock
Reported bugs
3 issues- Crashes on certain iOS versions
- Occasional freezing of hands
- Countdown timer sound not working
Requested features
5 requests- Add GMT/dual time display
- Implement widget support
- Add different second hand sounds
- Allow setting background color to match watch
- Include alarm/timer functionality
In-app purchases
SailBot
No in-app purchases
AtomicClock
- Lifetime Pro Version$6.99








