Alien Box vs NFM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Alien Box
This audio effect plugin creates a unique sound with increased sustain and gentle, LFO-modulated vibes. It functions as an AUv3 effect for hosts like GarageBand or as a standalone app for real-time audio input processing.
- Unique sound enrichment
- LFO modulated vibes
- Complex resonator system
- AUv3 plugin for hosts
- Standalone app mode
- Gain, Vibe, Depth, Reverb controls
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Alien Box is a completely new kind of audio effect that you have never heard before. It makes the sound big and slightly increases the sustain while adding gentle vibes to it. The vibes are LFO modulated and the effect is using very complex resonator system inside. It is modulation effect and you can compare it to flanger, phaser or chorus but it is not like any of them… The app is an Audio Unit Effect AUV3 and can be used inside GarageBand or other AU host apps as an effect plug-in. Alien Box can also run as a stand alone app adding effect to the audio input so you can play your guitar, bass or synth directly three the app if you have the connector to do so. Alien Box controls: - Gain - you can use it increase the gain and sustain - Vibe - main tone and background vibes balance - Depth - controls the modulations depth - Reverb - adds reverb to the background vibes
NFM
This intuitive FM synthesizer works as an Audio Unit Extension plug-in for music production apps. It features six stereo operators, customizable algorithms, and built-in effects. Manage presets and precisely enter parameter values with a numeric pad.
- Six stereo operators
- Customizable FM algorithm
- Adjustable envelopes
- Built-in effects (distortion, delay, flanger)
- Monophonic, polyphonic, legato, glide voice modes
- Preset management with import/export
- Numeric pad for precise parameter entry
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Note that NFM is in maintenance mode, receiving only critical bug fixes. For a more flexible and actively developed alternative, try Mela. It offers most of NFM's features as modular components and is frequently updated with new features. NFM is an intuitive FM synthesiser with a streamlined interface. It works as an Audio Unit Extension (aka AUv3 plug-in) inside host applications such as AUM, Cubasis, GarageBand and Logic Pro. Key Features - Six stereo operators - Fully customisable FM algorithm - Oscillators: sinusoid, noise, fixed frequency - Envelopes with adjustable level, time and curve parameters - Operator amplitude can be modulated by the stereo LFO, key or velocity - Pitch envelope, vibrato - Built-in effects: distortion, delay, flanger - Voice modes: monophonic, polyphonic, legato, glide - Preset management, including preset import/export - Numeric pad for entering parameter values precisely
Screenshots
Verdict
The clearest difference is review sentiment: NFM at 100% against Alien Box's 0%. NFM also leads on rating (4.9 vs 1.3) and update cadence (every 12 months vs every 38 months). Alien Box's advantage is price ($2.99 vs $4.99) and device support (3 vs 1). On ads, in-app purchases and monetization model 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
Alien Box costs $2.99 and NFM $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NFM holds the better App Store score, 4.9 against 1.3. That said, the two scores are not equally well evidenced: NFM has 34 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Alien Box's written reviews are positive against 100% of NFM's.
Alien Box ships an update every 38 months, NFM every 12 months. Both last shipped on November 2, 2026.
| Parameter | Alien Box | NFM |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 1.3 (3 ratings) | 4.9 (34 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 34 — better |
| Update frequency | Every 38 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Nikolozi Meladze |
Customer experience
Alien Box
NFM
In-app purchases
Alien Box
No in-app purchases
NFM
No in-app purchases









