Soil Jar: Texture Test
Identify Sand, Silt & Clay
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Photograph your settled soil jar, mark the visible layers, and discover whether your soil is sandy, silty, clay-heavy or loamy! Entirely on your iPhone!
Discover your soil texture with a jar, water and your iPhone.
Soil Jar guides you through the traditional soil jar test using clear, visual instructions. Once the sample has settled, photograph the jar, mark the visible layers and let the app calculate the proportions of sand, silt and clay.
Your measurements are then converted into a recognised soil texture classification, such as loam, sandy loam, clay loam or silt loam.
HOW IT WORKS
Collect a representative soil sample.
Add soil, water and a small amount of washing-up liquid to a straight-sided jar.
Shake the jar and allow the particles to settle.
Photograph the separated layers.
Drag the measurement guides into position.
View your soil texture result.
VISUAL, INTERACTIVE GUIDANCE
Follow illustrated instructions that show how to prepare the sample, photograph the jar and identify each sediment layer.
MEASURE THE LAYERS
Use four draggable guides to mark:
• The bottom of the sediment
• The top of the sand layer
• The top of the silt layer
• The top of the clay layer
Sand, silt and clay percentages update as the guides move.
UNDERSTAND THE RESULT
See:
• Your soil texture classification
• Sand, silt and clay percentages
• A visual layer-composition chart
• Your position on the soil texture triangle
• A short, plain-language explanation
SAVE YOUR TESTS
Name tests by garden area, add notes and keep a local history of completed results.
PRIVATE BY DESIGN
No account is required. Soil photographs, measurements and saved results remain on your device.
Soil Jar estimates soil texture from the visible proportions of sand, silt and clay. It does not measure pH, nutrients, contamination, fertility or soil health.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Thomas Richardson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Thomas Richardson
- Size
- 8.3 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Lanchester Research & Design