Wouldnt recommend—at the moment

In short, its just lacking in general. Gameplay is simple, but too much so, and many elements are absurd &/or contrary to previous games (read: battling (ugh), Candies, and Stardust, among others). Very grindy, but without the connection one builds with a Pokémon by spending hours with them training in other games. As soon as a bigger number comes in, the old ones off to Willow, and the only way to level or evolve them is to catch more of them, to inevitably be thrown out. On the technical side, distance tracking is bad. Lag causes slingshotting, making the game think Im in a car even if Im sitting still. Riding a bike is too fast for the games liking, another discrepancy with the other games. Data & battery usage are pretty atrocious, too. No trading, no locations aside from stops and Gyms, no battle strategy, no Poké tracking (and no love for rural players).

Edit: Not really any better than it was the first time around, and in some ways its actually worse. New Poké tracking is bad — in the city, it literally tells you where to walk, and in the country, it gives you nothing. Few things are more exciting than seeing a Venusaur pop up in the sightings, nor more infuriating than knowing it will probably disappear long before I can stumble upon it as I walk (cant run, or Id be "moving too fast") randomly around (and it did). There also seems to be precisely zero correlation between a mons usefulness, or my catch bonus, or its CP, and how difficult it is to catch. Why does a great throw with a great ball from a level 25 trainer with +3 catch bonus fail to catch a 160 CP Weedle — twice? Why is it that an excellent throw with a great ball fails on a dual-type Pokémon with a +3 and +2, and it runs away after the first throw? All the other problems I mentioned previously are still there, except now with a chokehold on speed only exacerbated by the slingshotting. It also crashes about 50% of the time on startup. The lack of any social aspect to the game is also becoming more frustrating. Theres very little "game" to be found in this game. So much potential, so little delivery.

Gamma-I17 about Pokémon GO, v1.31.0