Strong for Apple Watch is creating Duplicate Workouts (Troubleshooting)

Duplicate Workouts on Apple Watch can occasionally appear on your device, often caused by either poor internet connection or connectivity, or due to limited system resources on your watch. 

This makes it challenging to track down the root cause as it's not directly under our control. While we are not able to reproduce this consistently, we are working on a long term solution.

Why are duplicates occurring?

Duplicates are typically created when the connection between Apple Watch and iPhone is disrupted in some way. Strong competes with other apps for system resources and bandwidth for the connection between Apple Watch and iPhone. Mistakenly informed that the connection was lost or compromised, Strong retains the workout on iPhone to preserve your data.

Since the iPhone and Apple Watch connection is not controlled directly by Strong and instead via standard Apple Watch connectivity protocols (and mainly in the background), the exact conditions of the connection state during a workout are very difficult to replicate in general testing.

Finish your Workout on Apple Watch

As a general guideline, please Finish your Workout on Apple Watch. This will bring the app into the foreground, allocating as many system resources to the Apple Watch to keep the connection active.

• If your workout location/gym's WiFi connection is compromised or poor in any way, this is very likely to affect performance.
• If your workout contains a large amount of "data" (Note: this is more likely to compose of Heart Rate data as opposed to e.g. weight and reps logged, although the overall complexity and length of your workout may be a factor), this  increases the likelihood of an issue
• If you are using an older Apple Watch model, this also increases the likelihood of an issue (but not necessarily.)
• Do not engage in heavy multitasking on Apple Watch, especially towards the end of your workout as other apps may initialise background processes. (This is also not recommended in general for stability reasons)
• The probability of issues may correlate with the overall number of workouts you have stored in your account/Strong Cloud. (If this is a larger contributing factor, we will be able to directly address this in future Strong updates).

Please also ensure that you've followed the general guidelines for Strong for Apple Watch.

What can I do?

Please try to ensure you have the best possible network connection at all times.

We're currently limited in the support we can provide for this issue. Providing bug reports will not necessarily help for this case, due to inability to reproduce these issues consistently. All relevant information we have relating to this is included in this document.

However, we ARE working towards a larger rebuild of the underlying architecture and sync solutions (including a fully Independent Apple Watch app), which will eliminate this issue in a future update.