Kenyan agritech startup Rhea Soil Health Management has secured $100,000 in convertible note financing from Obudu Capital funding a commercial expansion of its soil-testing technology into Tanzania as the company shifts from research and development towards wider deployment.
The investment will finance the expansion of Rhea’s RHEA AgriPad programme, with the startup targeting deployment of 100 devices and soil-testing services for 5,000 farmers in Tanzania.
Co-founded by Priscilla Wakarera and Soinato Leboo, Rhea is positioning the AgriPad as a field-level soil intelligence tool for farmers who often have limited access to laboratory testing and detailed information on soil health and nutrient requirements.
The funding comes as East African agriculture faces pressure to raise productivity while improving fertiliser efficiency and managing increasingly volatile climate conditions.
Smallholder farmers across the region remain heavily dependent on rainfed production, making soil health and efficient input use critical to farm performance.
At the centre of Rhea’s model is the RHEA AgriPad, a portable soil-testing device that uses sensors and machine-learning algorithms to analyse soil conditions in the field.
It is designed to assess parameters including nutrient levels and pH and translate the resulting data into fertiliser recommendations.
Those recommendations can be delivered digitally through channels such as WhatsApp, allowing farmers to receive field-specific information without relying exclusively on conventional laboratory testing.
A patent application filed by Rhea in 2025 describes a handheld soil-testing system combining GPS information with a web-based fertiliser recommendation platform designed to generate site-specific recommendations based on individual field conditions.
The company is also seeking to turn the resulting soil data into a broader agricultural intelligence asset.
Aggregated datasets could eventually support agricultural lending, crop insurance and carbon-market participation, potentially giving financial institutions more detailed information with which to assess agricultural risk.
Rhea’s latest funding follows $75,000 raised through a Village Capital programme backed by Standard Chartered’s Women in Tech initiative, adding to the capital supporting the startup’s technology and commercial expansion.
The company has already been building the operational infrastructure needed to scale. During the first half of 2026, Rhea recruited and trained 135 agronomist agents operating across agricultural areas including Makueni, Taita Taveta and Kajiado.
The agents support farmer engagement and AgriPad deployment, while the company’s Rhea Agent App is designed to facilitate field data collection and farmer interactions.
Rhea has also introduced Rhea Optima, a service aimed at medium- and large-scale farmers, agronomists and local laboratories requiring more comprehensive soil-management solutions.
The combination of hardware, agronomists and digital services reflects Rhea’s strategy of building a service-based agricultural technology platform rather than relying solely on device sales.
Tanzania will provide an important test of whether that model can be replicated beyond Kenya.
The deployment of 100 AgriPads and planned reach of 5,000 farmers will allow Rhea to gather operational data, measure farmer adoption and assess how its soil-intelligence system performs under different agricultural conditions.
The expansion also comes as African agritech companies increasingly seek regional markets as investors look for technology capable of improving productivity, reducing input inefficiencies and making agricultural data more accessible.
For Rhea, the longer-term opportunity extends beyond soil testing. Scaling its field-level data infrastructure could make the company’s device-generated information valuable in various agricultural sectors, including fertilizer management, farm finance, insurance and carbon markets.
The immediate challenge, however, is commercial execution, converting a technology developed for field-level soil analysis into a scalable service that farmers can afford, trust and consistently use across East Africa.
