Plants rarely tell you what's wrong. Their history does.
Sabz is a plant-care app for iPhone. When something looks off, a Check-up reads the care history you've already recorded — watering, light, repotting, the move to a colder room — and works out the likely cause with you.
iPhone · iOS 18 or later · No account needed
Most likely overwatering, beginning about three weeks ago
Moderate confidence. The watering pattern and the yellowing fit, but root rot can't be confirmed from a photo.
No water for at least two weeks — check the top 5cm before the next one.
It looks for the cause, not the symptom
Yellow leaves have a dozen explanations. Sabz narrows them down using what actually happened to this plant — how often you watered, when the light changed, how long since it was repotted — and tells you which explanation the history supports.
Your observations count
You're standing in front of the plant; Sabz isn't. Describe what you see in your own words — "the soil smells sour", "only the lower leaves" — and watch the diagnosis change to account for it.
Honest, rather than confident
When the evidence is thin, Sabz says so, names what it would need to be surer, and gives you the safest next step in the meantime. It would rather be useful than sound certain.
"Two weeks of history isn't much to go on. This could be transplant stress or a draught from the window. Move it away from the glass, log what happens for a week, and run another Check-up."
Private by design
No account, no sign-in, no analytics. Your plants, photos, care history and diagnoses stay on your device. Photos leave only to be read — to identify a species, or as part of a Check-up — and are discarded straight after.
Read the privacy policyPet safety you can check
Toxicity for 104 species, taken from the ASPCA's published lists for cats and dogs, with the source shown. A general guide, not veterinary advice — in an emergency, call a vet.
Calm reminders
Watering reminders that adapt to the plant and the season. No streaks, no badges, nothing to keep alive but the plant.
Start with one plant you're worried about.