Antennascope · iOS · iPadOS
A pocket-sized aerial alignment tool. Real-time compass guidance. Freeview, Saorview, TNT, ATSC. Free on the App Store.
Built for the signal
Everything you need to find a transmitter and lock onto the signal — no professional installer required.
Compass alignment
Hold your iPhone like a compass and rotate the antenna until the dial locks on target. The bearing is calculated to within 1°. The on-device magnetometer does the rest.
Find your transmitter
One tap or one postcode. Antennascope returns your nearest transmitters, ranked strongest first.
Interactive map
Bearing markers, line-of-sight indicators, and full transmitter details one tap away.
Four countries
Freeview, Saorview, TNT and ATSC datasets baked in. Switchable in a tap.
Private by design
The developer collects no data. GPS coordinates and postcode lookups are processed locally on your device.
A look inside
Three taps to find your nearest transmitter. A live compass to lock the antenna in place.
Where it works
Freeview · DTT
Saorview
TNT
ATSC
It uses official broadcaster transmitter datasets for each country. Once you give it a location by GPS or postcode, it calculates bearing, distance and signal estimate to every transmitter in range and ranks them strongest-first.
Antennascope reads from the iPhone's magnetometer. If it's jumpy, recalibrate by waving the phone in a figure-of-eight, and avoid using it next to large metal objects which throw off the magnetometer.
Yes. Search by UK postcode, Irish Eircode, French postal code or US ZIP code without enabling GPS.
Bearing calculation accurate to within 1°. On-device compass typically delivers ±5°. Combined, you'll be within a few degrees of optimal — well inside the receive cone of a directional UHF aerial.
No. As confirmed on the App Store listing, the developer collects no data. GPS coordinates and postcode lookups are processed locally on your device.
Any iPhone or iPad running a recent version of iOS or iPadOS with a built-in magnetometer (compass).
