Line Hum vs Heavier Metal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Line Hum
This audio unit plugin adds authentic analog noise and distorted wave forms to your music productions. It can drone on any frequency and ring modulate input for added distortion, offering a unique sound for electronic music creators.
- Authentic analog noise
- Synthesized analog instruments
- Noisy wave forms
- Drones on any frequency
- Ring modulation
- Distortion effects
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Your mix is full of synthesized analog instruments - but something is missing! YES! THE SOUND OF A CABLE LYING ON THE FLOOR SOMEWHERE NEAR AN ELECTRIC LINE. Line Hum gives you this missing piece of Analog authenticity, As well as a variety of noisy wave forms, this Audio Unit is also able to just sit there and drone on any frequency and ring modulate its input for added distortion. It's actually pretty useful, especially when you run a bunch of them serially or in parallel. Because this is an Audio Unit, you need to run the (non functioning) Line Hum app to install it.
Heavier Metal
This music plugin emulates a classic 1990s distortion pedal with advanced digital modeling. It offers full parametric control, capturing the original circuit's behavior for a wide range of guitar tones. Optimized for low CPU usage and low latency, it's compatible with various AUv3 hosts.
- Parametric NAM distortion model
- Recreates original pedal behavior
- Mid-forward gain, tight low-end
- AUv3 plugin for Mac/iOS
- Native Apple Silicon support
- Ultra-low CPU, near-zero latency
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Heavier Metal is a modern distortion plugin based on one of the most aggressive pedals of the 1990s. Built using Artera DSP’s Parametric NAM engine, it delivers not just the sound — but the full behavior of the original circuit. Every knob. Every nuance. Captured with precision. This isn’t a snapshot. Heavier Metal is fully parametric — meaning all front-panel controls respond just like the original analog pedal. From razor-sharp riffs to soaring leads, it gives you the full expressive range of the original hardware, with the flexibility of a native plugin. Key Features – Fully parametric NAM model — not a static capture – Recreates the full tone-shaping behavior of the original HM-style pedal – Mid-forward gain structure with massive sustain and tight low-end – AUv3 plugin for macOS and iOS – Native support for Apple Silicon (M1/M2) – Ultra-low CPU usage and near-zero latency Compatibility Heavier Metal runs in any AUv3-compatible host such as Logic Pro (Mac/iPad), GarageBand (Mac/iOS), AUM, Cubasis, and more. Available exclusively on the App Store.
Screenshots
Verdict
The clearest difference is price: Line Hum at $0.99 against Heavier Metal's $12.99. Line Hum also leads on ratings volume (6 vs 2). On rating, review sentiment, ads and in-app purchases 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
Line Hum costs $0.99 and Heavier Metal $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Heavier Metal holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | Line Hum | Heavier Metal |
|---|---|---|
| Price | $0.99 — better | $12.99 |
| Rating | 4.8 (6 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.4 — better | 13.0 |
| Further details — not scored | ||
| Size | 13 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Henry Lowengard | Reinarc LLC |
Customer experience
Line Hum
Heavier Metal
In-app purchases
Line Hum
No in-app purchases
Heavier Metal
No in-app purchases









