Photo-based disease recognition is real and useful — with the right expectations: a differential list of 2–4 likely causes with distinguishing signs, not a single verdict. In Bulgaria there is a second layer global apps miss: treatment is regulated by the Plant Protection Act and Ordinance 12/2023 — only products authorised in Bulgaria (the BFSA register is authoritative), professional-category rules apply, label doses are mandatory, and everything goes into the journal.
Zemedelko's photo-diagnosis mode returns a differential list, checks BFSA's monthly phytosanitary bulletins for your region, and recommends only registered products.