Exactly better buy a garmin or wahoo elemnt roam for that price and you get all the relevant data via Ant+ and you have proper buitin gps navigation for your trips.Garmin Edge 530 can be had for under £200. This does less, no built in GPS, maps, temperature etc.
At under £100 I might be tempted, just to tidy things up, but I would probably still wait for it to be on sale for £70 or so before I would actually buy it.
If you could select more power levels, so a super ECO and a TrailPlus from it (rather than having to get the phone out) then that is the sort of feature that might make me keener to have it.
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