Privacy Policy

Power of Grass · Last updated August 1, 2026

Big Grass Guy ("the app," "we," "us") is a lawn-care app published by Power of Grass. We built it to be private by default: the app has no user accounts, shows no ads, and does not track you. Most of your information stays on your device. This policy explains the few cases where data leaves your device, and why.

Information we handle

• Lawn photos (only when you run an AI diagnosis). When you choose to scan a photo, that image is sent to our diagnostics service and to the AI providers that generate the result — Anthropic, and Plant.id (Kindwise), a plant and weed identification service that identifies the plants in your photo. The photo is used only to produce your diagnosis, is not stored by us afterward, is not linked to your identity, and is not used to train AI models. If you never use the AI scan feature, no photos ever leave your device.
• Location. If you grant location access (or set a region for a lawn), we use your location or region to fetch a local weather forecast (via Open-Meteo) and to provide regional context for an AI diagnosis. We do not store your location on our servers or use it to track you.
• Lawn-care data you enter — journal entries, soil tests, schedules, and watering logs, including any photos you attach to entries — is stored only on your device and is not transmitted to us.
• AI scan results — when you run a lawn scan, a short summary of the general problem categories it found (for example “broadleaf weeds”) is saved only on your device to power eco-friendly follow-up tips on your home screen. The photo is not saved for this, and you can clear this history any time in the app’s Settings.
• Subscriptions. If you subscribe to Big Grass Guy Pro, the purchase is handled entirely by Apple through the App Store, or by Google through Google Play, depending on which version of the app you installed. We never receive your payment details; we only learn from Apple or Google whether your subscription is active.

How we use information

We use the information above only to provide the features you ask for — diagnosing a photo, showing your local weather, and unlocking Pro. We do not use it for advertising, profiling, or tracking, and we do not sell or rent it to anyone.

Service providers

We share data only to the extent needed to run these features:

• Anthropic — processes the photo you submit to generate the AI diagnosis.
• Plant.id (Kindwise) — analyzes the photo you submit to identify the grass, weeds, and plants in it, improving diagnosis accuracy.
• Apple — processes any subscription purchase made through the App Store.
• Google — processes any subscription purchase made through Google Play.
• Open-Meteo — provides the local weather forecast.

These providers process the data on our behalf to deliver the feature and under their own terms.

Data retention

Photos submitted for diagnosis are processed in transit to produce your result and are not retained on our servers afterward. On-device data remains until you delete the relevant entries, lawn, or the app itself.

Data security

Any photo you submit for a diagnosis is transmitted over encrypted (HTTPS) connections to our diagnostics service and providers. Because the app uses no accounts and keeps your journal, soil tests, schedules, and logs on your device, there is no central database of your personal lawn data for anyone to breach.

Data deletion

Because Big Grass Guy has no accounts, all of your personal data lives on your device. You can delete any lawn, entry, or log within the app, clear your AI scan history under Settings, and uninstalling the app permanently removes everything stored on the device. Diagnosis photos are never retained on our servers, so there is nothing further to request deletion of.

Your choices

• You control camera, photo-library, and location permissions in your device's system settings (iOS Settings, or Android App info → Permissions), and can change them at any time.
• You can delete any lawn, journal entry, soil test, or log within the app, and deleting the app removes all on-device data.
• You can clear your saved AI scan history in the app under Settings → Scan history.
• You can manage or cancel a subscription in your Apple ID account settings (App Store) or in the Google Play app under Payments & subscriptions (Google Play), depending on where you subscribed.

Children

Big Grass Guy is not directed to children and does not knowingly collect information from children.

Changes to this policy

If we change this policy, we will update the “Last updated” date above and post the new version at this URL.

Contact

Questions about this policy? Contact us at [email protected].