Support
Questions and requests are welcome at freetokyo2020@yahoo.co.jp. A reply may take a few days.
Frequently asked questions
Where do I find the mode-of-action group code?
On the product label or packaging in front of you. Fungicides usually carry a FRAC code and insecticides an IRAC code — 3, M5, 4A and so on — though where it is printed varies by country and by product. Rosetare has no table that looks the code up from an active ingredient. In exchange, a product from any country registers the same way.
My label has no group code on it.
You can still add the product and record the spray with the code left blank. That spray simply cannot take part in a check, and Rosetare will say so — "no code entered, nothing to compare" rather than "no overlap". The manufacturer's technical sheet, or your national pesticide register, often carries the code.
My product has more than one active ingredient.
A product in your library can hold several ingredients, each with its own group code and target category. Spray a mix and every group in it is recorded and taken into the check.
It says it cannot compare yet, and shows no result.
One of three things, each with its own wording. 1. This is the first spray recorded in that zone. 2. The earlier sprays in that zone have no group code entered. 3. This spray has no group code entered. None of them means "no overlap" — Rosetare will not dress missing data up as a clean result.
The same group came round again. Is that bad?
Rosetare does not judge. It reports how many sprays back the group appeared, and which group it was, and nothing more. Whether it matters depends on the products, the pest or pathogen, and how the season has gone. The judgement is yours.
If I edit a product later, do past checks change?
No. Group codes are written down as a snapshot at the moment you record the spray. Correcting the library afterwards never rewrites a past record or a past check.
Why are sprays recorded against a zone rather than a plant?
Because resistance builds in the population of pathogens and pests living in a place, not inside a single bush. Plants exist to record things like exposure; sprays do not attach to them.
If I delete a zone, do its sprays go too?
Deletion has two layers. Archiving takes the zone out of the lists and out of the rotation check, but keeps every spray record — they still appear in the spray history and the CSV export, and restoring the zone resumes the check where it left off. Permanent deletion removes the spray records with it — and the app counts them and shows you that number before asking you to confirm.
A disease card says there is not enough data.
Conditions are judged from a history of hourly weather, so a few days have to accumulate first. The card tells you how many more days are needed. Rosetare never shows that state as "conditions not met".
How do you measure how long the leaves were wet?
It is not measured. It is estimated from temperature and relative humidity, using a humidity threshold that varies with your climate zone. The error is roughly ±1.5 to 2 hours, and that note stays on the risk screen permanently — it cannot be switched off. If it does not match your own garden, settings let you shift the threshold by up to ±5%. When every plant in a garden is marked as sheltered from rain, rainfall is not counted towards wetness.
Is there a single combined risk score for all five diseases?
No. The five need genuinely different conditions, so averaging them would destroy the information. The five cards are independent of one another.
Why does the powdery mildew card look different from the others?
Deliberately. That score adapts an approach published for a related pathogen group (grape powdery mildew, the UC IPM Gubler-Thomas Risk Index) and has not been validated for the fungus on roses. It is formatted differently so you can tell at a glance that it is borrowed, and the card names its source.
I would rather not share my location.
You do not have to. In "Place and climate" you can search for a place name or type a latitude and longitude. Those two paths alone drive every feature, Premium included. Rosetare also never asks for location permission during onboarding.
Where does the weather come from? Does the app go online?
From Apple's WeatherKit, and that is the only thing the app goes online for. Your garden's latitude and longitude go to Apple, and the hourly weather for that point comes back. The exchange is with Apple, not the developer, who runs no server and receives none of your records.
Can I use it for roses on a balcony or under glass?
The records and the rotation check work as normal. But if every plant in a garden is marked as indoors or greenhouse, disease conditions are not shown. Outdoor weather does not describe those conditions, and showing something misleading is worse than showing nothing.
It asked me whether I saw the disease.
Once the latent period for that disease has passed, Rosetare asks once whether it actually appeared. Answering is optional. Until you do, the risk screen keeps the note that how well the model matches your area has not been checked yet.
Can I switch to Fahrenheit?
Yes, in settings. Thresholds are always compared in Celsius and converted only for display, so switching units never moves a threshold or changes a result.
Can I change the language?
Yes, in settings; the default is your device language. Rosetare is available in English, Japanese, German, French, Spanish, Italian, Dutch and Brazilian Portuguese.
I am changing phones. Can I move my records?
There is currently no device-to-device sync and no restorable backup. The CSV export writes your spray history out as text but cannot be read back into the app. A migration path is under consideration.
What format is the CSV?
ISO 8601 dates, a full stop as the decimal mark, commas between fields — fixed, regardless of your language or region settings. The export is free.
How do I cancel my subscription?
From Settings → Apple Account → Subscriptions on your device. Cancelling never deletes the gardens, zones or records you have created; you keep reading, editing, deleting and exporting them.
I changed phones and Premium is gone.
Try "Restore purchases" on the purchase screen or in settings. You need to be signed in with the same Apple Account you bought it with.
Will it tell me whether to spray today?
No. Rosetare does not take a position on whether you should spray. It checks your records and shows whether published infection conditions have been present. What to do about it is for you to decide, from the product label, the rules where you live, and your own look at the plants.
Requirements
iPhone and iPad running iOS 17.0 or later. Weather by Apple Weather.