Fajero predicts 28-day MPa using Abrams' law, calculates slump in real-time, and works completely offline on every construction site.
Download FajeroAll configurations stored locally on your device. No account required. Pre-loaded mix targets based on real construction standards.
Fajero applies Abrams' water-cement ratio law to deliver scientifically grounded compressive strength predictions measured in megapascals. When you adjust cement, sand, aggregate, and water using the intuitive sliders, the calculation engine instantly computes the resulting 28-day strength based on proven concrete science used in laboratories and engineering specifications worldwide.
The slump calculator analyzes your mix proportions and predicts workability from stiff to fluid, flagging potential segregation, excessive water content, or insufficient strength before a single bucket is mixed. The 28-day cure curve visualizes how your concrete develops strength over time, giving you confidence that the mix will meet structural requirements when cured.
Every batch target—from garden paths requiring 25 MPa to reinforced beams demanding 40 MPa—includes pre-defined slump bands and strength thresholds derived from construction industry standards. Fajero stores all recipes locally with no cloud dependency, ensuring the calculator remains functional underground, in remote areas, or anywhere cellular signal fails.
Predicts 28-day compressive strength in megapascals as you adjust ingredient ratios, applying Abrams' law calculations instantly without delays or internet lookups.
Calculates slump values and assigns workability categories from stiff to sloppy, helping you dial in the exact consistency needed for your pour conditions.
Ten ready-to-use targets including garden paths, driveways, floor slabs, footings, and reinforced beams—each with defined MPa and slump requirements.
Displays a 28-day strength development curve showing how your concrete gains compressive strength over the full curing period from day one to final hardness.
Flags common issues such as segregation risk, overly wet mixes, and below-target strength before you commit materials, preventing costly on-site mistakes.
Save proven mix recipes to your Recipe Book and retrieve them on every future job—all stored locally on your device with zero cloud sync or account requirements.
Fajero version 3 includes performance optimizations and bug fixes for enhanced stability across all iOS devices. The latest update improves calculation speed and refines the user interface for faster on-site adjustments. The developer maintains a local-first architecture ensuring complete offline functionality and user privacy with no external data transmission.
iOS utility app | Local storage only | Ready in under 60 seconds
Download FajeroVersion 3 | iOS compatible | No subscription required | Offline operation guaranteed