Ok, I've found an interesting bug (I think?) with the game that lets me get free coins and stardust. Of course, if I'm a noob and never realised you can claim gym rewards WITHOUT waiting 21 hours after first conquering, then feel free to ignore this entire post and just call me a noob.
Here's what I did step-by-step:1)
I took over a gym in the morning, but lost it by the evening.2)
Next morning I took over the gym again. Once it was mine again, I went to my eggs, tapped on one, then pressed "Start Incubation". my only incubator (the infinite one), was in use.3)
I tapped on the store icon from the egg-incubator menu. It took me to the store (obviously). However
in the top right it showed me a shield with the number '1' in it. I pressed that and it gave me 10 coins and 500 stardust, and started the gym countdown (21 hours).4)
I lost the gym again (of course), that afternoon. The following morning (Friday) I repeated steps 2-3 and got 10 more coins, and 500 more stardust. Again I lost the gym a few hours later.5)
Weekend happened and I didn't visit the gym (too busy getting Shadow of Mordor plat). I went again on Monday morning, took the gym, got more coins and Stardust.
Factors that may play a role:
- Accessing the shop from the egg incubation menu, rather than from the main menu, after conquering a gym.
- One time I took the same gym in the morning and had it til late at night. When I woke up the next morning, it was gone. I am fairly confident that I had the gym for over 21 hours, but lost it before I could claim my prize. Maybe this got my account entangled with that gym and caught up in an endless loop. Now, every time I take over that gym, maybe it assumes I've had it for over 21 hours.
- I don't interact with any other gym - I'm terrified of losing my free stuff so my only gym interactions involve that one specific gym and only following the steps above.
P.S. If any of you manage to replicate my results, please don't share it with the rest of the internet, as it will get patched out pretty damn fast. That said 10 coins a day is pretty shit - best we can hope for is a free incubator every 2 weeks, so I won't cry if I end up losing it.