SoilHue vs RiegoAppArg
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoilHue
This app analyzes soil color from photographs, providing Munsell notation and an approximate USDA soil order. It offers advanced camera calibration and on-device processing for privacy. Ideal for professionals and students working with soil.
- Soil color identification from photos
- Munsell notation and USDA soil order
- Advanced camera calibration
- On-device image analysis
- Export data to .xlsx
- Lighting condition check
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SoilHue identifies the Munsell color of a soil sample from a photograph taken with your device. It is built for pedologists, agronomists, geologists, archaeologists, conservators, soil-science students and anyone who works with soil color in the field. WHAT IT DOES • Calibrate the camera with an X-Rite ColorChecker Classic. SoilHue detects the card automatically inside your photo, rectifies its perspective, and computes a 3×3 correction matrix by least-squares fit over the 24 reference patches. • Take a photo of your soil sample (or pick one from your library) and select the area to analyze with a rectangle or a free-form polygon. • SoilHue averages the selected pixels in linear sRGB, applies your calibration matrix, and finds the closest match in CIE Lab among 293 chips derived from the official USDA Munsell renotation data. • Get the Munsell notation, an approximate USDA soil order (Histosol, Mollisol, Alfisol, Oxisol, Vertisol, Spodosol, Aridisol, Entisol, Inceptisol, Ultisol) and a short description. WHAT'S NEW IN 2.0 • 293 reference chips instead of 18. • ΔE94 in CIE Lab instead of Euclidean RGB. • Matrix 3×3 calibration replacing per-channel factors. • Automatic ColorChecker detection (Vision framework). • Printable calibration card (2-page A4 PDF, ICC sRGB). • Lighting check (warm/cool/atypical tint warning). • Real .xlsx export. • Accessibility, dark mode and stability improvements. DATA & PRIVACY • All analysis runs on-device. No image, sample or location ever leaves your phone. • Samples are stored locally in your app sandbox. iCloud sync is planned for a future release. • Location is captured only when you explicitly grant it. REQUIREMENTS • iPhone or iPad running iOS 17.6 or later. • A reasonably calibrated camera. Recommended: X-Rite ColorChecker Classic for best results. A basic calibration card is included for casual use. NOTES The USDA soil order classification is a heuristic orientation, not a definitive diagnosis — real classification depends on horizon, chemistry, texture and other field properties. Calibrations saved with versions before 2.0 are not compatible with the new color engine; the app will ask you to recalibrate. Contact: soilhue@ajgb.eu — Web: ajgb.eu/apps/soilhue
RiegoAppArg
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RiegoApp es la herramienta de gestión hídrica para productores agrícolas, ingenieros agrónomos y asesores que quieren optimizar el riego con datos precisos y actualizados. * Calculá el balance hídrico de cada lote. La app combina datos meteorológicos en tiempo real, imágenes satelitales y parámetros de suelo para darte un número concreto: cuánta agua tiene el suelo hoy y cuándo hay que regar. ¿QUÉ PODÉS HACER CON RIEGOAPP? * Gestioná tus lotes * Creá lotes georreferenciados con polígono dibujado en mapa. Asigná cultivo, tipo de suelo y umbrales de riego personalizados. * Balance hídrico diario * Seguí el agua útil disponible en el suelo día a día. Registrá lluvias y riegos. Recibí alertas automáticas cuando el cultivo necesita agua. * Clima integrado * Pronóstico meteorológico actualizado para cada lote: temperatura, humedad, viento y radiación solar. Cálculo automático de ETP diaria. * NDVI satelital * Consultá el índice de vegetación de tus lotes desde imágenes Sentinel-2. El Kc del cultivo se ajusta automáticamente con datos reales de cobertura vegetal. * Alertas de heladas * Panel de riesgo de heladas con temperatura mínima proyectada y alertas push para que puedas actuar a tiempo. * Grados día y proyecciones * Calculá la acumulación de grados día (GDD) para estimar fenología y proyectá el balance hídrico hacia adelante. * Mapa de lluvias * Visualizá la distribución espacial de lluvias en tu zona para comparar con registros propios. * Funciona sin conexión * La app sincroniza datos cuando hay internet y sigue funcionando en zonas rurales sin señal. CULTIVOS SOPORTADOS Soja, maíz, trigo, girasol, papa, tomate, vid, olivo, palta, citrus, manzano, peral, durazno, alfalfa, caña de azúcar, algodón, frutilla, y más de 40 cultivos extensivos, frutales y hortícolas. MODELO FREEMIUM Empezá gratis: creá lotes, seguí el balance y recibí alertas sin costo. Las funciones avanzadas (NDVI satelital, proyecciones, análisis histórico) están disponibles con suscripción.
Screenshots
Verdict
The clearest difference is update cadence: RiegoAppArg at every 4 days against SoilHue's every 2 months. RiegoAppArg also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SoilHue ships an update every 2 months, RiegoAppArg every 4 days. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | SoilHue | RiegoAppArg |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Antonio J. Gonzalez | Luciano Nico Acosta |
In-app purchases
SoilHue
No in-app purchases
RiegoAppArg
No in-app purchases









