# SignalProof: Tone Generator — Test Tones, Noise, Sweeps

> Test Tones, Noise, Sweeps (iPhone/iPad app by Borealbit Technology Limited.)

- Source: https://appshunter.io/ios/app/signalproof-tone-generator/id6785174973 (this page in markdown: same URL + `.md`)
- Developer: [Borealbit Technology Limited](https://appshunter.io/developer/1808424081)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: English
- Released: 2026-07-05
- Data updated: 2026-07-28
- User reviews in markdown: https://appshunter.io/ios/app/signalproof-tone-generator/id6785174973/reviews.md

## What is SignalProof?

SignalProof is a tone generator for repeatable speaker, room, headphone, and sound meter checks. Generate controlled signals, follow practical workflows, and save the setup so you can run the same check again.

Use it when random music, videos, and undocumented tone tools make results difficult to compare.

WHAT YOU CAN GENERATE

- 1 kHz and custom sine tones
- Pink, white, and brown noise
- Linear and logarithmic frequency sweeps
- Left, right, or stereo output
- Conservative dBFS level control
- Timed or continuous playback

BUILT FOR PRACTICAL AUDIO CHECKS

SignalProof helps you:

- Compare speaker channels with pink noise
- Run quick sound meter sanity checks
- Find room resonances with sweeps
- Repeat window, door, and isolation checks
- Save test-session notes and reference readings
- Export a local PDF report for follow-up

LOCAL-FIRST BY DESIGN

Your sessions, notes, presets, and reports stay on your device. SignalProof requires no account and includes no ads, analytics SDK, cloud sync, or AI service.

FREE CORE, OPTIONAL LIFETIME PRO

SignalProof is free to download. The free experience includes the core tone, noise, and sweep generator, starter workflows, local test sessions, basic sharing, and one custom preset.

An optional one-time, non-consumable SignalProof Pro purchase unlocks four advanced guided workflows, burst and intermittent playback patterns with configurable timing, and unlimited custom presets. SignalProof Pro is a lifetime unlock, not a subscription. The purchase price is shown in the app using your App Store storefront.

SAFETY AND LIMITS

SignalProof generates digital audio signals. It does not guarantee a specific acoustic dBSPL output from an iPhone speaker, Bluetooth speaker, or external system. Actual sound pressure depends on device volume, speaker hardware, distance, room conditions, and measurement setup.

It is not a certified sound calibrator, medical hearing test, or lab-grade acoustic measurement tool.

Start with low volume, raise levels gradually, and protect your hearing.


## Version history (last 2 releases)

### 1.0.2 — 2026-07-24

SignalProof Pro is now available as an optional one-time lifetime unlock. It adds four advanced guided workflows, configurable burst and intermittent playback, and unlimited custom presets. The core tone, noise, and sweep generator remains free, with no subscription.

This update also improves playback startup and background handling, and makes duration controls more consistent with one-second precision.

### 1.0.1 — 2026-07-05

No release notes.

## More apps by Borealbit Technology Limited

- [SilentProof: Noise Complaint](https://appshunter.io/ios/app/silentproof-noise-complaint/id6756213159)
- [SleepLedger: Sleep Diary](https://appshunter.io/ios/app/sleepledger-sleep-diary/id6757725138)
- [Steadiva: GLP-1 Tracker](https://appshunter.io/ios/app/steadiva-glp-1-tracker/id6758356876)
- [FrameTwin: Dual Format Camera](https://appshunter.io/ios/app/frametwin-dual-format-camera/id6770244846)
- [MotifPilot MIDI Generator](https://appshunter.io/ios/app/motifpilot-midi-generator/id6770246707)
- [Boreal NFC: Tag Writer](https://appshunter.io/ios/app/boreal-nfc-tag-writer/id6782816981)

All apps by Borealbit Technology Limited: https://appshunter.io/developer/1808424081

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*