# Signal Generator SG-2400 — A precision signal generator

> A precision signal generator (iPhone/iPad app by Chris Longo.)

- Source: https://appshunter.io/ios/app/signal-generator-sg-2400/id6761087119 (this page in markdown: same URL + `.md`)
- Developer: [Chris Longo](https://appshunter.io/developer/1887731302)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 26.2 · 3 MB
- Languages: American English
- Released: 2026-03-30
- Data updated: 2026-06-27
- User reviews in markdown: https://appshunter.io/ios/app/signal-generator-sg-2400/id6761087119/reviews.md

## What is Signal Generator SG?

SignalGenerator SG-2400 is a precision audio signal generator built for musicians, audio engineers, and anyone who needs clean, accurate test tones.

WAVEFORMS
• Sine — pure fundamental tone
• Square — band-limited with anti-aliasing
• Sawtooth — band-limited with anti-aliasing
• Triangle — band-limited via integrated square wave
• White noise — flat frequency spectrum
• Pink noise — equal energy per octave

FREQUENCY RANGE
10 Hz to 20 kHz with configurable step increments (0.1, 1, 10, 100 Hz). Dial in frequencies with the rotary jogwheel or tap the display to type an exact value.

AUDIO ENGINE
Direct sample-level synthesis at 48 kHz with no intermediate buffers. Anti-aliasing eliminates artifacts on square, sawtooth, and triangle waves at high frequencies.

INTERFACE
Inspired by classic test equipment and old school handheld electronics. Real-time waveform display, musical note detection with cents offset, and a tactile jogwheel with step-scaled sensitivity.

HEARING SAFETY
Always start at a low volume. Use caution with headphones.


## Version history (last 2 releases)

### 1.1 — 2026-04-07

• State persistence: frequency, waveform, step increment, volume, and power state are restored on launch 
• Haptic feedback on the jogwheel: soft bump on touch, light tick on each frequency step

### 1.0 — 2026-03-31

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 2026-06-27.*