Expo Go vs Toolhub

Start learning to build projects using web technologies with just your iOS device. Expo Go is an educational developer tool for learning to create experiences with interactive gestures and graphics using JavaScript and React. Note: some basic programming experience is recommended. Technical specs: this version of Expo uses React Native 0.86

ToolHub puts a suite of MWD field instruments in your pocket. Using your iPhone's built-in magnetometer, it detects MagLink signals, measures magnetic-field strength in real time, and logs raw sensor data — no extra hardware to carry to the rig. Built by Erdos-Miller for directional-drilling and MWD crews who need quick, reliable field checks at the wellsite. TOOLS • MagLink Detector: Watch for MagLink sync pulses in real time. A live timeline shows detections over the last 60 seconds, with a running sync count, target rate in Hz, and a timestamped log of recent syncs — so you can confirm signal at a glance. • MagField: Read magnetic-field strength live, straight from your device. On-screen readout plus audio feedback tells you instantly when the field is clear or saturated, with orientation guidance to help you take a clean measurement. The screen stays awake while you work. • Magnetometer Logger: Capture raw three-axis magnetometer data with a configurable sampling rate, live readings in microtesla (µT), and performance stats. Review and share your logs when you're done. WHY TOOLHUB • No extra gear — your phone is the instrument • Real-time readings designed for the field, not the office • Clear visual and audio feedback you can use with gloves on • Fast, focused tools that do one job well More tools are on the way. ToolHub is built and maintained by ErdosMiller.