guitarscaper vs pUnKGeN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
guitarscaper
This app generates evolving, ambient guitar soundscapes for relaxation, study, or background music. It also functions as a virtual instrument with performance tools and effects, offering two distinct musical moods.
- Generative ambient soundscapes
- Virtual instrument with keypads
- Performance loop recorders
- Built-in reverb and delay effects
- Auto-accompaniment and note hints
- Two musical moods (light and sad)
- Royalty-free use in recordings
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Guitarscaper is a generative music app and virtual instrument that’s easy on the ears and fun to play. Launch the app, and with a single tap of the auto-play button, guitarscaper will create evolving and ambient guitar-based soundscapes that are unique every time. While all of the guitarscaper sounds originated from a single electric guitar, many have been extensively processed to create an “impossible guitar” that can morph between orchestral-type swells and ethereal choir-like sounds. Think of it as guitar DNA taken to the next level! Guitarscaper in auto-play mode is the perfect companion for relaxing, studying or providing non-intrusive headphone music at work or on your commute. You can even set a timer so you can fall asleep to its gentle and soothing tones. You can also play guitarscaper as a virtual instrument using the dedicated keypads and performance loop recorders, and tailor the sounds with built-in reverb, delay and “character” effects parameters. And while you’re playing, guitarscaper can lend a hand by adding auto-accompaniment parts and even provides hints for notes it thinks might sound good depending on which notes you play! As a sample-based instrument, guitarscaper currently supports two “moods” – a light mood, based on the E major / pentatonic Yo scale, and a sad mood, based on the Em pentatonic scale. Please note that guitarscaper is not a chromatic or MIDI-compatible instrument, and it is unlikely to become one. You can also record and process the audio output of guitarscaper using any Inter-App Audio host that supports IAA Generators. You are free to use guitarscaper in your own recordings or live events and installations on a royalty-free basis. All I would ask for is a simple credit that includes the name of the app – “guitarscaper”. I hope you will agree the guitarscaper interface, while minimalist and a perhaps a little cryptic initially, will eventually become very easy to use. Please do take the time to read the quick-start guide which can be found on the website. This is also the best place to ask questions, get technical support or report any issues. Happy guitarscaping! *** Please note that this app is now in maintenance / bug fixes only mode as it relies on "deprecated" (by Apple) technology such as IAA. ***
pUnKGeN
Create heavy rock, thrash metal, punk, and goth style sequences and loops with a 6-channel pattern groovebox and guitar riff generator. Features independent effects, filters, tuning, and ducking for each track, with options to generate, modify, or manually enter riff patterns.
- 6-channel pattern groovebox
- Guitar riff generator
- Independent track effects
- Manual note entry
- Scale and shuffle patterns
- Arpeggiate function
- MIDI and Ableton Link support
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Punk Syn Gen A 6 channel pattern groovebox and guitar riff generator for creating heavy rock, thrash metal, punk, and goth style sequences and loops. HEAVY METAL! Create mysterious 80s dark metal loops or create random riffs and drum loops with bass guitar licks. With 2 dedicated guitars, bass, synth and also drum tracks. Whether you play the guitar or not, use this app to come up with new ideas, ideas that you would never have dreamed of. ROCK ON! You can use this app as a guitar riff generator to make whole interesting goth or punk /thrash style sample loops. Every track has independent effects, filter, tuning and ducking ( similar to side chain compression) Generate, modify or manually enter riff patterns with "power" levels. Many different ways to generate or modify patterns that intelligently conform the patters for each instrument. Adding a note manually is easy. Place a note and adjust the power level from small strum, to powerchords for guitars. Power level in Guitar 1 allows you to add single note, single muted or power chords to create thrash riffs. Power level in synth gives you different pad type sounds. Two duplicate drum tracks with some basic drum kit sounds to give you some backing Bass Guitar power level goes from soft touch to slap bass. You can simply generate all day long with one button and it will create a scale, and riffs for every track. If you like the pattern but not the notes, choose your scale and rescale one or many tracks at the same time If you dont like the riff, shuffle it If you want an arpeggio but using a riff, make a riff pattern then press arpeggiate, cycles through arpeggio modes You can freely transpose the entire composition You can play one bar at a time or chain up to 4 bars Half or quarter the playback speed independently on each track so 64 steps plays slower equivalent to 256 steps. Thrash algorithm patterns have been influenced from bands like Metallica and Faith no More. In Fact Faith No More inspired us to use synth strings. Create ideas you wouldn't think of using scales and riffs. Whether you are a fan of Metallica riffs or punk, you can never tell what you'll get when it generates all tracks. Some chaos is also added to the generation of riffs. Many affects can be added from purposely adding bend, echo, reverb, extra distortion for even more thrash metal sound and resonating low pass filters to create mysterious and moody goth style patterns. This app is part of a family of apps: 6x808 - a drum sequencer, 2xb303 a TB303 sequencer, 7XdXfm - a 7 track-4 operator FM synth, 7XWave - a sample manipulation groovebox. Unique to this, the step edits are removed, and replaced with a dedicated piano roll for placing notes in a grid representing pitch and time. Like all the other apps, MIDI is included for sync as well as Ableton Link and Inter App Audio so you can route the audio to Audiobus/AUM Output note data on each channel too. You can sample whats playing anytime and it will record a sampled loop you can export to Audioshare or clipboard/email
Screenshots
Verdict
The clearest difference is review sentiment: guitarscaper at 100% against pUnKGeN's 44%. guitarscaper also leads on rating (4.8 vs 3.2) and ratings volume (21 vs 5). pUnKGeN's advantage is update cadence (every 3 days vs every 43 months). On price, 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
guitarscaper costs $1.99 and pUnKGeN $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
guitarscaper holds the better App Store score, 4.8 against 3.2. Both are backed by a comparable volume of ratings — 21 and 5 respectively. Written reviews point the same way: 100% of guitarscaper's written reviews are positive against 44% of pUnKGeN's.
guitarscaper ships an update every 43 months, pUnKGeN every 3 days. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | guitarscaper | pUnKGeN |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.8 (21 ratings) — better | 3.2 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 44.4% of reviews |
| Number of ratings | 21 — better | 5 |
| Update frequency | Every 43 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 220 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Rob Jackson | Rob Wilmot |
Customer experience
guitarscaper
pUnKGeN
In-app purchases
guitarscaper
No in-app purchases
pUnKGeN
No in-app purchases









