Hi kevinpbs
I apologize for any inconvenience caused.
We have detected that is some iOS devices the app can run out of memory when processing too much information.
In every update, we work in order to improve the general performance of the processing of the ATUM APP and in improving the sync time of the store. In the next days, we will release a new update (Beta 4) that improves the performance and allows to choose which elements you want to sync in order to limit the charge.
Best Regards,
Andrea.