# Slakes: Soil Health Test — Measure Aggregate Stability > Measures soil aggregate stability using image analysis for health assessment. (iPhone/iPad app by Soil Health Institute.) - Source: https://appshunter.io/ios/app/slakes-soil-health-test/id6449554197 (this page in markdown: same URL + `.md`) - Developer: [Soil Health Institute](https://appshunter.io/developer/1689653406) - Category: Utilities, Business - Price: Free - Rating: 4.50/5 from 6 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 24 MB - Languages: English - Released: 2023-11-15 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/slakes-soil-health-test/id6449554197/reviews.md ## What is Slakes? Unlock the power of soil health assessment with the Soil Health Institute's Slakes app. Easily and accurately measure wet aggregate stability – a key indicator of soil health. Key Features: • Open access to a reliable method for soil health assessment • A simple process for photographing three air-dried soil aggregates before and after a 10-minute water submersion • Automatic soil area estimation using an advanced pixel thresholding algorithm • Calculation of a dimensionless aggregate stability index, indicating soil health • Index values ranging from ~0.1 to 1, with higher values representing greater aggregate stability ## Key features - Open access soil health assessment method - Photograph soil aggregates before/after water submersion - Automatic soil area estimation - Calculates aggregate stability index - Index indicates soil health ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/slakes-soil-health-test/id6449554197/reviews.md ### 4/5 — Easy to use but text files are missing *2024-07-10* This is a very easy App for measuring soil aggregates stability. It records the results, it’s easy to find them but I cannot find to where the text files are exported - either to my email or in the Files of my phone. Can someone help? Thanks ## Frequently asked questions about Slakes ### What is Slakes used for? Slakes is used to measure wet aggregate stability, a key indicator of soil health. It helps users understand the structural integrity of their soil. ### How does Slakes work? Slakes guides you to photograph soil aggregates before and after a water submersion. It then uses advanced algorithms to estimate soil area and calculate a soil health index. ### Is Slakes free to use? Yes, Slakes is available for free. There are no in-app purchases or advertisements within the application. ### What devices support Slakes? Slakes is supported on both iPhone and iPad devices, making it accessible to a wide range of Apple users. ### How accurate is Slakes' soil area estimation? Slakes utilizes an advanced pixel thresholding algorithm for automatic soil area estimation, aiming for reliable measurements within the app's functionality. ### What does the aggregate stability index mean in Slakes? The index calculated by Slakes ranges from approximately 0.1 to 1. Higher index values indicate greater aggregate stability, signifying better soil health. ### When was Slakes last updated? The latest version of Slakes, 1.3, was last updated on May 20, 2024, indicating ongoing development and support. ### What is the age rating for Slakes? Slakes has an age rating of 4+, making it suitable for users of all ages interested in soil health assessment. ## Version history (last 4 releases) ### 1.3 — 2024-05-20 • The app has been updated to require iOS 17 • The distribution certificate has been updated ### 1.2 — 2024-01-02 Update of app title and description to increase searchability for app download. ### 1.1 — 2023-11-30 * Added home page scrolling function for improved home page navigation and functionality on phones with smaller screens. * Set app default font size to minimize overlapping text when larger font sizes are selected in phone display settings. ### 1.0 — 2023-11-15 No release notes. ## Apps similar to Slakes | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mix Tank - Tank Mixing Order](https://appshunter.io/ios/app/mix-tank-tank-mixing-order/id417355581) | 2.2 (26) | Free | Utilities | | [Soil Test Pro](https://appshunter.io/ios/app/soil-test-pro/id485742991) | 3.7 (14) | Free | Utilities | | [LandPKS Soil ID](https://appshunter.io/ios/app/landpks-soil-id/id6449366122) | 5.0 (1) | Free | Utilities | | [StraboField](https://appshunter.io/ios/app/strabofield/id1555903455) | 4.5 (18) | Free | Utilities | | [Soil Identifier: Analysis Test](https://appshunter.io/ios/app/soil-identifier-analysis-test/id6755925768) | — | Free | Utilities | | [CropX – Farm Management](https://appshunter.io/ios/app/cropx-farm-management/id1107546487) | 4.8 (6) | Free | Utilities | ## Related topics [soil health institute](https://appshunter.io/ios/topics/soil-health-institute) · [soildiaryresistivity](https://appshunter.io/ios/topics/soildiaryresistivity) · [soil test pro](https://appshunter.io/ios/topics/soil-test-pro) · [soilingfandilution](https://appshunter.io/ios/topics/soilingfandilution) · [aggregate](https://appshunter.io/ios/topics/aggregate) · [soil health assessment app](https://appshunter.io/ios/topics/soil-health-assessment-app) · [south dakota soil health coalition](https://appshunter.io/ios/topics/south-dakota-soil-health-coalition) · [smarter soil](https://appshunter.io/ios/topics/smarter-soil) · [soil direct](https://appshunter.io/ios/topics/soil-direct) · [soil samplin](https://appshunter.io/ios/topics/soil-samplin) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*