# TuneHelper — Car-audio measurement signals

> Car-audio measurement signals (iPhone/iPad app by Thomas Sojka.)

- Source: https://appshunter.io/ios/app/tunehelper/id6784959087 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Sojka](https://appshunter.io/developer/1885573704)
- Category: Utilities, Productivity
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2026-07-02
- Data updated: 2026-09-22
- User reviews in markdown: https://appshunter.io/ios/app/tunehelper/id6784959087/reviews.md

## What is TuneHelper?

TuneHelper turns your phone into an instrument-grade measurement-signal generator for car-audio DSP tuning. Stream its output into your car over Bluetooth, USB-C or a 3.5 mm cable and measure the result with REW (Room EQ Wizard) and a calibrated microphone.

Every signal is synthesized in real time, sample by sample — no pre-rendered loops, no audible seams — at a precise, honest dBFS level you can re-tune live from the driver's seat.

SIGNALS
• Pink & white noise — continuous, loop-seamless
• Log sweep & sub sweep — frequency response and impulse
• Tone bursts — transients and decay
• Periodic pink noise — synchronous averaging in REW
• Dirac impulses — impulse response
• Sine tone — 20 Hz to 20 kHz, with optional anti-phase
• 1/3-octave band noise — 32 ISO 266 bands
• Stepped-sine RTA — a tone walking all 32 band centres, hands-free
• Multitone comb — up to 64 tones at once, the instant RTA
• Gated pink burst — DSP settling and room decay
• Synthetic kick drum — sub-to-front time alignment by ear
• Brown noise — heavy low end for rattle hunting

ALIGNMENT & STEREO TOOLS
• Inter-channel delay dial — ±5 ms in 0.01 ms steps, read the value off in ms and cm
• Correlation modes — correlated, uncorrelated or anti-phase
• Auto L/R — hands-free alternation between the speakers, optionally via the phantom centre
• Per-driver band noise — sub, woofer, midrange and tweeter presets
• Anti-phase sine, a subsonic / high-pass finder and a rattle hunter with marks

WHY TUNEHELPER
• 100% real-time synthesis — every signal generated live, never a looped buffer
• Click-free start, stop and switching
• Live spectrum analyser with optional A/C weighting, RMS metering and a clip LED
• Auto-pause — cycles play and silence for hands-free averaging in REW
• Save and recall measurement presets
• Background audio — keeps playing with the screen locked

PRIVACY
No accounts, no tracking, no data collection. All settings stay on your device.

You bring the mic and REW — TuneHelper brings lab-grade signals to the driver's seat.


## Version history (last 4 releases)

### 2.6 — 2026-09-14

• Quick tiles are configurable — set both tiles on the Sine tab to the frequencies you actually measure (System → Quick tiles). 50 Hz and 1 kHz remain the defaults.
• Octave and semitone nudges — a second nudge row steps by a full octave and by 1/12 octave, so one tap moves the same musical interval at 30 Hz and at 15 kHz.
• Band range — the auto-sequence and the stepped-sine RTA now walk only the bands you pick, e.g. 1 k…4 k instead of all 32. Both steppers share one range.

### 2.5 — 2026-08-24

Fix on Multitone.

### 2.4 — 2026-07-26

Brown Noise

### 2.1 — 2026-07-02

No release notes.

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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 2026-09-22.*