This 8-in-1 soil tester for plants reads pH, moisture, EC, temperature, light, and an NPK estimate, and sends the data to your phone. Unlike USB-only probes, it works with both iPhone and Android, so most gardeners can use it out of the box.
Read it as a screening tool. The pH, moisture, and EC are measured directly, while the NPK figures are estimated from conductivity—a useful direction for spotting when a nutrient runs low, not a lab-exact number. We would rather tell you that than let you trust a figure too far.
Yieryi builds pH, EC, and TDS meters, and has for over ten years. That background is why we are clear about which readings are measured and which are estimated, so you know how far to trust each one.
Does it work with an iPhone?
Yes. It connects to iPhone over Bluetooth (the sensor still needs USB power during use) and to Android by direct USB connection.
Is the NPK reading lab-accurate?
No—it is estimated from conductivity, meant for tracking trends, not exact nutrient values.
Does it need batteries?
No—it's powered directly through USB, from your phone or a compatible USB power source.
How to use it
Where it works best
Gardens, raised beds, containers, greenhouses, and indoor plants — for gardeners who want a broad soil read on their phone.
Monitor soil pH, moisture, EC, temperature and light together with N, P and K estimates in one device. Use the direct measurements and NPK trend estimates together to build a broader picture of changing soil conditions.
Built for long-term outdoor use with full waterproof protection and corrosion resistance.The sensor can be directly inserted into soil or buried underground for stable continuous monitoring.
High-density epoxy resin sealing prevents water and moisture from entering the internal components, ensuring reliable performance even in wet environments.
Connect the sensor to a compatible phone or USB power source to view current soil readings. Use the data for routine monitoring and comparison rather than laboratory soil analysis.
View current soil readings on your phone and compare changes as you move between plants, beds or growing areas. This is especially useful when you want more context than a single handheld reading.
Save or export readings for later review so you can compare soil conditions across different plants, locations or testing dates.
Use it for routine monitoring in gardens, raised beds, containers, greenhouses, lawns, nurseries and small growing areas where you want multiple soil readings in one device.
iPhone users can connect through Bluetooth while Android users can connect through USB. Follow the product instructions for the supported app or mini program on your device.
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Track N, P and K estimates together with soil temperature for routine comparison over time. Use the readings to identify changing soil conditions rather than as laboratory nutrient measurements.
Built for repeated soil checks in gardens, greenhouses and growing areas, with a durable probe design that supports routine field monitoring.
Simple controls and a clear display make it easy to check soil nutrient trends and temperature without complicated setup.
It measures pH, moisture, EC, temperature and light directly, while N, P and K are displayed as directional estimates for trend monitoring.
Yes. The sensor has an IP68 rating and is designed for soil insertion and outdoor monitoring according to the product instructions.
Yes. iPhone users can connect through Bluetooth, while Android users can connect through USB. Follow the product instructions for the supported app or mini program.
No. It is powered through USB from a compatible phone or USB power source.
Remove soil residue after use and wipe the probe clean according to the product instructions. Keeping the sensing area clean helps maintain more consistent readings.
