Sydvesti is a Helsinki-based company that is passionate about creating meaningful apps by combining advanced technical solutions with clean and simple designs.

Our expertise is in Apple Watch development and in the ability to create innovative, engaging and fun apps to boost and support a healthy lifestyle. Apps we have made have been featured by Apple, TechRadar, The Wall Street Journal, The Independent, CNET, 9to5mac, Make Use Of etc.

Our technical focus is to create apps for Apple Watch and iPhone. We have developed native iOS apps with Swift since its release and watchOS apps since the introduction of watchOS 2.

Sleep Details sleep tracker for Apple Watch


Learn about your sleep habits with Sleep Details. Sleep Details tracks your sleep related data and shows you daily Sleep Score based on data collected by your Apple Watch.

Sleep Details uses data stored in the iPhone Health app.  Sleep Details tracks following sleep related data: Sleep time, Activity while sleeping, Heart rate, Heart rate variability (HRV) and Blood oxygen levels.


“Sleep stats that matter” -Apple

“Best Sleep Apps for the Apple Watch” -Make Use Of 

Sleep Details sleep tracker for Apple Watch and iPhone

Coloring Watch 

Start coloring and shut yourself off from the rest of the world. Coloring Watch is the first coloring book made exclusively for Apple Watch. Start a coloring session and Coloring Watch will measure your heart rate while coloring. Share your ready images with your friends easily from Coloring Watch gallery on iPhone. 

Coloring Watch is featured on Apple “Our Favorite Apple Watch Apps”Techradar’s “The best Apple Watch apps” and The Independent’s “12 best Apple Watch apps” –lists.

“The best Apple Watch apps of 2021” -Techradar

“Best apps to download now for your new Apple Watch” -Cult Of Mac



Heart Rate Variability measurements recorded by your Apple Watch can give you insight on the stress level your body is under. By using HRV Tracker to track short-term measurements and long-term trends, you can see how your workload during the day, workout sessions or sleeping etc. affect your body’s readiness, recovery and stress level.

“With Sleep Watch, HRV Tracker and Breathe on the Apple Watch, I was able to change the most unhealthy part of my life.” –CNET, Jason Hiner


Training Today

Sydvesti did the technical implementation of Training Today for Betoli Ltd.

Training Today constantly monitors your Health Data from Apple Watch to determine your Readiness To Train (RTT). Training Today can help to avoid overtraining injury and let you know when is the best time to work hard, or to take it easy. Training Today uses the advanced capabilities of Apple Watch to monitor your health 24hrs a day and processes that data to create a simple accurate guide to help you to reach your training goal.

Training Today for Apple Watch helps coach you on workout intensity and rest days.”



How breathtaking it is to climb the stairs to the top of the tallest building in the world? How heavy exercise is dancing and how much sweating does it take to light a lamp? No matter the place or time, accept the challenge and get yourself moving with the Milestones for Watch.

All challenges are completed by being active. Milestones reads your activity data directly from your Apple Watch and shows the progress in the challenge by coloring illustrated black and white images with vibrant colors.


Pulse 24

Pulse 24 is an easy to use heart rate tracker for Apple Watch. With Pulse 24 you can examine in detail your resting and activity heart rate directly on your Apple Watch. Pulse 24 will also keep you notified with dynamic notifications when your resting heart rate is outside your limit values.

Pulse 24 lets you examine all of your recorded heart rate points within 24 hours on a minute level. This way you can easily get detailed information of your daily heart rate directly on your watch. 



Stepics is an uniquely illustrated activity tracker where puzzles are solved by using your daily steps as game energy. Solving puzzles will bring the illustrations to life, unlock new puzzles and reward you with new Stepics iMessage stickers.

Solve a variation of unique picture puzzles. Flip and drag pieces to build a picture that matches with the word hint associated with the puzzle.


Memory Moves

Memory Moves is a standalone app designed exclusively for Apple Watch that encourages daily activity while testing your memory. Memory Moves uses your daily Move ring data and transforms your activity into memory game turns. By being active, you will not only improve your memory, but test your memory and advance in the memory game. By completing levels you will get rewarded with images that you can use as complications to personalise your watch faces.


Mount Burnmore

Mount Burnmore blends wearable tech with gamification in a fun way. Mount Burnmore is a puzzle game that transforms your active energy (your calories burned as registered by your Apple Watch Activity App) into game energy, which you use to solve routes to the top of mountains. The more active energy you generate, the more game energy you’ll have to play!

The best Apple Watch apps we’ve used in 2019  TechRadar

“Love the Concept”  Apple Watch Cast

“Now, this is the sort of thing that takes advantage of Apple Watch’s capabilities in a fun, interesting, and potentially-beneficial way!”  Mac Daily News