Cell Surveys: Signal Heatmap

Cell Surveys turns your iPhone into a powerful signal survey tool. Passively collect cellular signal data as you drive, walk, or commute — then view coverage heatmaps, track mileage, and identify dead zones on an interactive map. KEY FEATURES - Passive Signal Collection — Automatically records cellular signal strength (estimates) in the background using GPS. No manual effort required. - Coverage Heatmaps — See color-coded signal quality overlaid on your map. Instantly spot dead zones, weak coverage areas, and strong signal corridors. - On-Demand Surveys — Run targeted surveys for cellular, WiFi, and Bluetooth. Record signal data along a path with real-time charts. - Mileage Tracking — Automatic trip detection logs your drives for IRS mileage deductions. Review trips on a calendar, see each drive on the map, mark trips work or personal, and check driving time and estimated fuel or EV costs. Export a CSV whenever you need it, all in the app. - Parcel-Level Detail — Tap any property on the map to see parcel boundaries, owner info, and sub-grid signal analysis for that location. - AI Assistant — Ask questions about your survey data, coverage patterns, or signal metrics in the AI chat, using your own Anthropic or OpenAI API key. - Parcel Coverage Dashboard — Lock onto a property and open its dashboard: a 5-meter signal grid on the map and in 3D by floor or elevation, a coverage quality breakdown, carriers and network types seen, and property details. Filter by day, week, month or a custom range, and watch readings from your other devices on the same account arrive live. - Privacy First — No ads, no trackers, and we never sell your personal information or individual readings. Readings sync to your account to build your maps and mileage; the public crowd coverage map shows only average signal per area, never your account or trips. Whether you're a telecom professional doing site surveys, a fleet manager tracking coverage along delivery routes, a real estate investor evaluating connectivity, or just someone who wants to find the dead zones on your commute — Cell Surveys gives you ground-truth visibility into how cellular networks actually perform. CELL SURVEYS PRO (OPTIONAL) Signal heatmaps, coverage maps and survey recording are free. Cell Surveys Pro adds parcel boundaries and property details, operator mode, and mileage and trip tracking with work and personal labels, saved places, cost estimates, CSV export and weekly summaries. Pro is an auto-renewing subscription: $4.99 per month or $39.99 per year, with a 7-day free trial for new subscribers. Payment is charged to your Apple ID when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel it in your App Store account settings. Terms of Use: https://cellsurveys.app/terms/ Privacy Policy: https://cellsurveys.app/privacy/