Synapse: Device Check

Buying or selling a used iPhone? Know exactly what works — before money changes hands. Synapse runs a full on-device hardware check — cameras, speakers, mics, sensors, Face ID, buttons, connectivity — and produces a shareable pass/fail certificate you can attach to any resale listing. No account, nothing leaves your phone. QUICK CHECK — FREE (2–3 min) Run instantly, no purchase or login needed. Tests: • Display (screen uniformity, dead pixels) • Touchscreen (responsiveness) • Rear camera • Wi-Fi radio • Bluetooth radio FULL DIAGNOSTIC — Per-Check Credits Unlock the complete hardware suite: • Front camera & flashlight • Video recording • Microphone & speaker quality (both ear and loud speakers) • Proximity sensor • Motion sensors (accelerometer, gyroscope) • Screen rotation • Face ID / Touch ID biometric sensors • Vibration motor • Volume buttons, lock button, mute switch • GPS / Location accuracy • System integrity (jailbreak / tamper detection) • Shareable pass/fail certificate — with device specs (model, iOS, storage & battery status) Pricing: Single check $2.99 · 3-pack $4.99 · 10-pack $9.99 KEY FEATURES • 100% on-device — no data sent to any server • All results shown locally on your phone • Shareable pass/fail certificate (great for resale listings) • In-app purchases only (no sign-up required) • Results you can act on (repair, resale, peace of mind) Requires: Camera, Microphone, Location (during GPS test only — When-In-Use), Motion sensors, Bluetooth, Face ID, Local network permissions. Apple, iPhone, Face ID, and Touch ID are trademarks of Apple Inc.