Comments on the game (demo, in-browser. Might add more if I play more.) :
1. There's an odd delay with the bar at the bottom of the screen, if you hit the spacebar, there's something like a 0.25 to 0.5 second delay before it registers. Might be an in-browser Itch thing though.
2. Since there's no loading screen, the game repeats the audio rapidly, giving me a headache while it loads.
3. I wish "START EXPERIMENT" could be hit by pressing space.
4. The game's income is WAY too low for a game with such simple gameplay, sitting here doing run after run just to buy one upgrade is a pain. The average player probably has to do 4-6 runs just to buy their first upgrade.
5. With how long it takes to buy your first upgrade, it's a pain that it doesn't tell us what the two upgrades do. I mean, my assumption is that "tube" makes the left meter fill faster and that "juice control" makes the right meters fill slower, but that's just a guess, the game doesn't say.
6. Why's the game $20? That's an ungodly huge amount for a game this early in development, especially since it sounds like the only things paywalled right now are the other characters, who I assume play the same way as the first girl. TBH the game should be cheaper until it's more developed
7. Dunno if the shop upgrades fix this or not, but the game's got that issue where the gameplay is quick enough that the player isn't really allowed to look at the lewd parts, we're too busy looking at the right and bottom of the screen to have a chance to watch the girl filling.
7a. Suggestion: keep minigame as-is, but have the filling process be more of a "cash out" system. You do the minigame (in-lore, you're processing and creating the "juice" as the girl gets increasingly nervous(/horny?) watching the tanks fill.) There's a slight multiplier to juice production as the game goes on, so the player is rewarded for going longer and doing better. The game ends if the player chickens out and ends the round, or lets the right meters max out. If the player quits before it maxes out, they then get to inflate the girl with the processed juice, but if they max out the meters, the tanks burst and they get nothing. This way, there's a new risk/reward system and the player gets to watch the girl inflate.
8. Might be worth considering a one-handed mode.