For best accuracy of laps and times pause your workout when not swimming (for example resting). When we’re not swimming, we tend to move around in the water and produce a lot of signals that might be interpreted as swimming and can result in inaccuracies.
Swimmo might also count additional laps if you swim very slowly. If that’s the case, try to use kicks/drill mode to improve accuracy.
To ensure accuracy, please do not change the stroke type during a lap. Only one style of swimming per lap is supported.
If by any chance your lap is missed, Swimmo should correct itself, just keep swimming. Our algorithms look at the whole workout and corrects any mistakes it detects.
If you still have Swimmo not counting laps, make sure to push off the wall intensely while turning. Longer glide should improve accuracy.
If you’re performing kicks/drill sets, use Swimmo’s kicks/drill mode (see question: Can Swimmo measure kicks and drills sets?) if you’re swimming using regular strokes – do not use this mode.
There are also other irregularities that can cause miscalculation of laps like stopping to swim in the middle of the lap, very long pauses between laps etc.