OK, OK I know I wasn’t going to plan to do a ‘review’ of this new Sleep app but I had hoped to write something at least a little bit original.
I have the TicWatch S2 and last night I charged it up so that I could immerse my left wrist in a night of fun with the new TicSleep feature. Rest assured, the night of fun did NOT happen as the S2 is not (yet) compatible with the TicSleep app.
Compatability is currently only for the TicWatch Pro and this summer’s release of the Pro 4G/LTE version.
How it Works:
It automatically does it’s stuff when you go to bed. You then wake up to the full estimated glories of your night’s sleep stages and heart rate movements either on the app or the watch itself.
One interesting featurette that MIGHT be worth testing out when this finally comes to the S2 model is the SMART ALARM function. Details on exactly how that works are a little sketch but it’s probably in line with what (IIRC) Withings did a couple of years back with their bedside sleep monitor. In that you will be woken up slightly earlier than your alarm if you are detected to be in a LIGHT sleep stage, the theory being that it is best not to interrupt other sleep stages by waking at ‘the wrong time’
Last Updated on 21 January 2026 by the5krunner
My favourite kit and nutrition
- Injinji – Runners protect your toes. Avoid discomfort and minor injury. Run more. run faster. I use them.
- Garmin 90-degree charging adapter — the small adapter that keeps your charging cables tidy. Essential for race day. I use one.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session. I use one.
- Ravemen FR300 — front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters. I use one.
- Body Glide – The Blue anti-chafe stick that all swimmers and many runners use. I use it.
- Maurten — the race nutrition trusted by elite athletes. Gels and drink mix engineered to be easy on the stomach. I use them.
- Garmin Varia RTL515 — radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch. I use this model.
- Favero Assioma Pro RS2 — the power meter pedals most serious cyclists end up choosing. Accurate, easy to move between bikes. I use this model.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
