Price
FAQ
Clear answers before you press play.
SignalProof is built for repeatable practical checks. It is also clear about what an iPhone signal generator can and cannot promise.
Data
Local-first
Test context stays on device unless the user chooses to share it.Limits
No certified SPL
Digital signal control does not guarantee acoustic dBSPL output.Question map
Capabilities
What signals the app generates and how those settings help repeat a test.
Limits
Why digital signal control is different from certified acoustic calibration.
Data and pricing
What stays local, what the website receives, and how launch pricing works.
What does SignalProof do?
SignalProof generates repeatable iPhone audio test signals including sine tones, pink noise, white noise, brown noise, and frequency sweeps for speaker checks, room troubleshooting, isolation comparisons, and sound meter sanity checks.
Does SignalProof produce a guaranteed dBSPL level?
No. SignalProof controls the digital signal parameters, but acoustic sound pressure depends on iPhone volume, speaker, distance, room, device model, and measurement setup.
Can I use it with SilentProof or another sound meter?
Yes. SignalProof is designed as a practical signal source for SilentProof validation workflows and for sanity checks with other sound meter apps or external meters.
Is SignalProof a certified calibrator or medical hearing test?
No. SignalProof is not a legal calibration device, Class 1 or Class 2 sound level calibrator, laboratory certificate, or hearing diagnosis tool.
Does SignalProof require an account or cloud sync?
No. The MVP is local-first. The website exposes lightweight support and health endpoints, but it does not store test sessions or user audio data.
How much does SignalProof 1.0 cost?
SignalProof 1.0 is planned as a free iPhone app with no in-app purchases at launch.
Local-first audio testing
Use SignalProof when you need the same signal twice, not a vague noise source.
Generate a tone, noise profile, or sweep, then record enough context to compare speakers, rooms, windows, doors, or meter readings later.