Signal GH

Signal GH

TV Signal Meter for HDHomerun

521 ratings
88 reviews
$2.99

Details

  • Released
  • Updated
  • February 14, 2019
  • September 22, 2025
Signal GH video #1 for iPhone
Signal GH screenshot #2 for iPhone
Signal GH screenshot #3 for iPhone
Signal GH screenshot #4 for iPhone
Signal GH screenshot #5 for iPhone
Signal GH screenshot #6 for iPhone
Signal GH screenshot #7 for iPhone
Signal GH screenshot #8 for iPhone
iphone
ipad
appletv
🖼️Get Icon
Icons↘︎

About

This tool helps HDHomerun users monitor and enhance their Over The Air (OTA) TV reception. It visualizes signal quality across channels, aiding in hardware adjustments for better performance. Features include system state snapshots and a broadcast tower map for US users.

Monitor OTA signal quality
Graph multiple channels simultaneously
Adjust and upgrade receiving hardware
Snapshot system states for experiments
Broadcast tower map (US users)
Manual channel tuning
Show original description

What users say

See all reviews

What's New in Signal GH

3.0.8

September 22, 2025

• Location button in map tab needed to be updated • Updated the map data • The tinted icon was not drawing as expected.

More

Charts

Top Paid

📉 96-27

Utilities

This app dropped -27 positions in Utilities chart.

Last updated on July 21, 2026.

User reviews

No longer works

I’m having a problem with the app connecting to a HDHR Quatro. It used to work, but no longer does. It sees the HDHR, but won’t do a scan and quickly disconnects. There are no issues connecting to it via its web page or Plex. The problem exists using this app on iPhone, iPad, and AppleTV. Unfortunately there is contact information for developer support. Disappointed.
Show more

Incredibly useful

I had been grinding through optimization of my antenna setup using spreadsheets and hdhomerun_config when I discovered this app. Wow! Incredibly comprehensive data represented visually in real time. The ideal tool for what I want to do at a very reasonable price. Great app. Highly recommended!

Superb diagnostic tool

I rarely spend the time to write a review, but this is the app that convinced me to spend the time. I was trying to use the HDHomeRun-supplied tools to tune the antenna and test reception and just found it totally inadequate. I read some online forms of people having similar issues and they recommended this software. I couldn’t be happier. It gave me everything that I needed in a quick simple easy to use interface that I needed to optimize my reception
Show more

What happened to Canadian Channels?

First off I love this app.
I use it all the time to check my signal strength for my OTA antenna, but when I first got it the map showed Canadian stations so I was able to use it to point my antenna better. Now, after the last update (I want to say) the Canadian stations aren’t on the map. This is a feature that I hope comes back. Had to knock of a star for that.
Show more

Excellent tool for “OTA TV Hobby”

I joke about over-the-air TV being a hobby. Years back I had mixed luck and was constantly tinkering to improve marginal reception.

At his point tinkering is minimal and I’m lucky to have very good reception. This utility has been essential to getting my antenna optimized and signal stable.

One nit. My one ATSC 3 station seemingly takes a bit of time for my hdhr box to lock the signal. The experiments feature maybe samples a bit too short a time showing randomly 0% or 100% for a signal that in reality is a solid 100%. I bet increasing the experiments sample time a bit would eliminate this false alarm.
Show more

Developer apps

User experience

🐞

Reported Bugs

3 issues

Scanning stops with no channels found

Bug

Incorrect channel numbers and frequencies

Bug

Tuner locking issues with other apps

Bug

Requested Features

4 requests

Option to keep screen on during use

Feature

Ability to select individual virtual channels

Feature

Increase signal polling frequency and history

Feature

Add more visual indicators for signal quality

Feature

FAQ

What does Signal GH do?

Signal GH is a diagnostic tool designed for users of HDHomerun networked digital TV tuners. It helps monitor and improve Over The Air (OTA) reception quality by graphing signal strength from multiple channels simultaneously. This allows users to make informed adjustments to their antennas, cables, and other receiving hardware.

What are the key features of Signal GH?

Key features include simultaneous graphing of signal quality from multiple channels, a system snapshot function to track experimental changes, and a map of digital television broadcasting towers for US users. It also allows for manual tuning of stations if automatic scans are unsuccessful.

How much does Signal GH cost?

Based on the provided information, Signal GH is a paid application. It does not have in-app purchases or advertisements, indicating a one-time purchase model for access to its features.

Is Signal GH compatible with all TV tuners?

No, Signal GH is specifically designed for users of HDHomerun networked digital TV tuners. It does not support QAM (digital cable) and requires the HDHomerun to be set to use broadcasting channels, not cable channels. If you do not have an HDHomerun, this app is not for you.

Can I watch TV on my device with Signal GH?

No, Signal GH is strictly a diagnostic and monitoring tool. It cannot be used to watch video content on your iOS device. Its purpose is solely to help you analyze and optimize your OTA TV signal reception.