OnionGuard is an AI-powered mobile app that helps onion farmers detect crop diseases early so they can protect yields and reduce losses. Using your phone camera, OnionGuard analyzes photos of onion plants and instantly flags common problems such as Alternaria, Bulb Blight, caterpillar damage, Fusarium and virosis, then offers recommended treatments. Farmers and extension officers will find the app useful because it runs its machine learning model on-device, works without internet, supports local languages and stores scan history to track field health over time—making rapid, informed decisions easier during the growing season.
⭐ Instant disease detection on-device: take a photo and get a fast diagnosis for common onion ailments.
⭐ Treatment recommendations: receive practical, disease-specific advice to help manage infections and pests.
⭐ Voice support in preferred languages: listen to step-by-step treatment instructions for field use.
⭐ Scan history and analytics: track past scans, monitor trends and watch crop health evolve over time.
⭐ Freshness assessment: evaluate the quality and market-readiness of harvested onions.
⭐ Offline operation and multilingual support: OnionGuard runs without internet and includes English plus local languages.
✅ Early detection reduces the risk of large harvest losses by enabling quicker interventions.
✅ On-device AI means the app works in remote fields without a data connection.
✅ Designed for smallholder needs: useful for individual farmers, extension officers and farm administrators tracking multiple users.
✅ Scan history and analytics help farmers make data-driven decisions about treatment and harvest timing.
❎ Limited to onion crops and the set of diseases the model has been trained to recognize; other pests or conditions may not be identified.
❎ Initially developed for the Upper East Region of Ghana, so some recommendations or recognition may be optimized for local varieties and growing conditions.
OnionGuard was developed to support smallholder farmers in the Upper East Region of Ghana, with a focus on accessible, on-device machine learning, local language accessibility and practical field tools for disease management.
File size： 32.00 M Latest Version： 1.2.0
Requirements： Android Language： English
Votes： 192 Package ID： com.onionguard.app
Developer： Nathaniel Adika
Must Have Tools Apps for Android
Equip yourself with our all-in-one toolbox app for everyday tasks and projects. Instantly convert between units, calculate tips, scan documents, manage files, and more with handy productivity tools. Includes a level, compass, QR code reader, ruler, speedometer, decibel meter, and flashlight. Save frequently used tools to your customizable dashboard for one-tap access. Track billable hours, wages, budgets, and invoices. Annotate screenshots, magnify labels, and sign PDFs on the go.
LIVE A HERO
Retro Hero Mr Kim
Empire of Passion
Arcane Quest Legends
Magic Snap: Momotaro
AllStar Manga Heroes
Lunescape
ONE PIECE Thousand Storm JP
Tap Titans 2
