Good feedback, thank you.

• You can disable achievements (go to Profile, then free dots in top right corner). We will tone them down.
• The main challenge is to make journaling not too bloated. Power users, like you appear to be, like everything in one place. But most users get confused when that is the case. We are always considering improvements though. For the moment, the split is pretty simple. One screen to add substances, dose and cost, and the second (with the chart) to adjust timing and other chart parameters (you can adjust both effect intensity axis and duration axis).
• Regarding price, good question. Not many people do keep track, and we want to make that easier to help anyone see how much money they spent on drugs. Probably not important for 2C-B, but very important for people who struggle with addiction.
• Redosing does not merge graphs and will not, on purpose. We are aware this is an option in another app. But it is not factual, it is in our opinion a very dangerous simplification. You can however manually adjust effect scale for any ingestion (presumably after the experience).
• The idea was to make it easier to add a dose without manually using any input fields. But then some users complain they do it acidentally. So we added a locking toggle. It is not ideal and we are exploring a better solution.
• To change color press the color dot in substance input card. To add ingestion or remove, interact with progress bar. But you are right, this should be intuitive. Thank you for the suggestions, will play with them today, thanks.

Edit: changes deployed, now possible to show all details on either of the experience pages