Yes, Solar power 2.0 is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
Solar power 2.0 is free.
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Unfortunately there appear to be no recommended parameters for LiFePO4 batteries. Worse still, after months of using the app it suddenly ceased to function on both my iphones and my ipad and deleting and reinstalling the app has not fixed the problem.
I’ve not used any other solar interface so I don’t have anything to compare but this app works and is fairly easy to understand the setup. Only thing I would add is historical data which isn’t supported.
