When checked against 2 good field guides and verified with spore prints, this app is correct about 80% of the time. That’s acceptable for what I would use it for, a preliminary assessment to follow up on. What’s not acceptable is the ANNOYING ads every time I use it. Stupid music with obnoxious sound effects and you can’t get rid of it. You are held hostage and forced to watch the ad to the end. If you try to ID another shroom, you must endure it again. I deleted the app.