auGEN X vs Trigger.FM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
auGEN X
This app generates a wide variety of audio signals for both creative sound design and precise audio system testing. It features a versatile oscillator, noise generator, and impulse generator, functioning as a standalone app or an AUv3 Audio Unit Extension.
- Full-featured audio oscillator with 4 wave shapes
- High-quality noise generator (white and pink)
- Impulse generator for reverb testing
- AUv3 Audio Unit Extension and Stand-Alone App
- MIDI In and BPM Sync support
- Precise signal control with intuitive UI
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auGEN X bridges the creative musical world of artists with the exacting scientific world of audio engineers. What started as a precision audio test utility has grown into a fun experimental sound design instrument. On one end use auGEN X to help set up, test, calibrate, and optimize your audio system. On the other use it to create a wide variety of interesting sounds. auGEN X has a full-featured audio oscillator, a high quality noise generator, and an impulse generator. The simple yet powerful user interface is designed for fast, precise, intuitive control over your signals. auGEN X works both as a Stand-Alone App and as an AUv3 Audio Unit Extension responding to MIDI In and BPM Sync from Hosts. I started making this app because as an audio electronics engineer I could not find a single audio generator that does everything that I require AND is an AUv3 Audio Unit. auGEN X has expanded into a musical tool for exploring and learning sound design. Our goal is for auGEN X to be an Essential in your audio toolbox. We hope you enjoy it and we’re excited to hear the cool things that you do with auGEN X! "I really see this app becoming a standard and a must have component in one's iOS audio app arsenal." - Paul Henry, Paul Henry Pro Audio FEATURES - Oscillator - 3 Modes: Fixed, Frequency or Level Sweep - 4 Wave Shapes: Sine, Triangle, Rectangle, & Saw - Tri & Rect have a Duty Cycle control (1.0% to 99.0%) - Tri, Saw, & Rect are alias-suppressed yielding virtually alias-free performance at musical fundamental frequencies - 10 to 20,480 Hz extended audio frequency range (great for testing subwoofers!) - Full-featured Frequency or Level Sweep with 5 Types, settable Direction, & selectable Repeat or 1-Shot Mode - Sweep Period has a wicked wide range from 1/10,000th of a second to 100 seconds and can alternatively be set as a Sweep Rate in Hz or BPM - Wide sweep range allows for FM & AM style sounds - Noise Generator - 2 Modes: Fixed or Level Sweep - White or Pink Noise - Pink Noise conforms to SMPTE Standard 2095-1:2015 Calibration Reference Wideband Digital Pink Noise Signal - Impulse Generator (useful for checking reverb algorithms) - Impulse Width can be set in samples - AUv3 Audio Unit Extension or Stand-Alone App - Verified to work great in AUv3 Hosts such as GarageBand, Cubasis, AUM, apeMatrix, BeatMaker 3, & Auria Pro - As a Stand-Alone App audio is sent to iPad's built-in speakers, Headphone/Line Out, or to any iOS-compatible USB audio interface connected to the Lightning jack APPLICATIONS - Creative experimental sound design - Sound effects for film, TV, & games - Great chiptune style sounds - Synthesize sirens or alarms - Test, characterize audio equipment - Set up or dial in a home theater - Tune car audio systems - Test subwoofers - Hearing tests - Ear training - Vibration analysis SPECIFICATIONS - Audio signal path uses state of the art Double Precision 64-bit Floating Point for maximum accuracy - Stereo out - Selectable Pan Laws include Linear & Constant Power Panning - Supports 44.1, 48, 88.2, & 96 kHz sample rates - User Guide embedded in App - no internet connection required to read it SYSTEM REQUIREMENTS - Compatible with iOS 9.0 & up (iPad 2, iPad mini (1st Generation), & up) - Support way back to iOS 9 means auGEN X works on every iPad model (except the very first iPad). Breathe new life into your old iPad by using auGEN X to make it a dedicated, precision audio source. - AUv3 Audio Unit Extensions require iPad 4, iPad mini 2, and up - 88.2 & 96 kHz sample rate require iOS-compatible USB audio interface connected to the Lightning jack Watch demos & tutorials on auDSPr's YouTube channel. Subscribe on YouTube: https://youtube.com/channel/UCRZm2cKWVJVfK-l9zrnMeFg Like Us on Facebook: https://facebook.com/AUDSPr-1392948064183211 Follow Us on Twitter: https://twitter.com/auDSPr Keep your ears and eyes open for more upcoming auDSPr audio apps!
Trigger.FM
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Über Trigger.FM Trigger.FM, das Radio der Freien, sendet frei von Zensur: Nachrichten, Musik und Unterhaltung. Nur im Internet. Ein Sender, viele Musik-Mischungen. Trigger.FM bietet (derzeit) sechs Mischungen: Informationen pur oder mit viel Musik in Deiner Lieblingsrichtung. Stündlich (10 Minuten vor der vollen Stunde) stets dabei: unsere unzensierten Nachrichten und das Beste aus den freien Medien von Milena Preradovic, Apolut, Henning Rosenbusch, Snicklink, Nuoviso, Paul Brandenburg und vielen anderen.
Screenshots
Verdict
The clearest difference is price: Trigger.FM at Free against auGEN X's $9.99. auGEN X's advantage is update cadence (every 3 months vs every 13 months) and iOS requirement (9.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Trigger.FM is free to download; auGEN X costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
auGEN X ships an update every 3 months, Trigger.FM every 13 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.
| Parameter | auGEN X | Trigger.FM |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.6 (12 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 57 MB | 146 MB |
| Age rating | 4+ | 4+ |
| Developer | auDSPr | sheraz Rasheed |
In-app purchases
auGEN X
No in-app purchases
Trigger.FM
No in-app purchases









