Comparison

Guitar Notation Pro vs Chaos Audio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Guitar Notation Pro

Compose, edit, and playback guitar sheet music scores with this powerful notation app. Supports multi-track tabs, chord charts, and various instruments. Export your compositions in industry-standard formats.

Highlights
  • Compose and edit sheet music
  • Multi-track tab support
  • Chord chart configuration
  • High-quality playback
  • Export to MusicXML, MIDI, PNG, PDF
  • Supports up to 8 staff
Features
Read full description

A great guitar tabs and chords notation app on iOS. For any guitar music lover, Guitar Notation gives you the ability to read, compose, edit, and playback guitar sheet music scores. With it you can be a talented composer and great musician anywhere. As long as you have a little knowledge of sheet music, you can write music composition simply by touch and move. Of course it could help you to learn guitar notations. It can handle multi-track tabs, also it supports for chord chart configuration. With the help of it you could easily record the flashes of inspiration wherever they strike. Are you ready to compose music in a simple way? ----------------------- Features: -Export in the industry-popular MusicXML file format, allowing for exchanging sheet music with other software (Finale, Sibelius, Encore, MuseScore, etc). -Export MIDI file. -Export PNG image and PDF document. -High quality sound for playback. -Support editing up to 8 staff at the same time. -Support many kinds of guitar and bass instrument. ----------------------- Supported notation: *A variety of note types, from whole note to 128th note and dotted note *Chord chart configuration *A variety of time signatures *All standard key signatures *Adjustable tempo *All accidentals (sharps, flats, double sharps, double flats, and naturals) *Tie, slur, and tuplet *Many types of ornament *A wide range of dynamics

About

Chaos Audio

This app allows users to control powerful guitar effects pedals and amp modelers, leveraging AI to create custom sounds from text descriptions. It offers a comprehensive platform for practice, recording, and performance, compatible with specific hardware.

Highlights
  • AI FX Builder for custom sound creation
  • Tone Shop for downloading third-party effects
  • Built-in tuner
  • 5-minute hands-free looper
  • Unlimited preset saving and sharing
  • Multi-effect chaining
  • Hands-free switching via Preset Control or MIDI
Features
Read full description

THE APP FOR STRATUS® & NIMBUS® Control the most powerful guitar effects pedal and amp modeler on the market, both powered by AI. AI FX BUILDER — CREATE ANY EFFECT YOU CAN IMAGINE Just describe the sound you want: "Give me a dynamic tremolo/phaser that's more tremolo-y and slower when I play softly, but smoothly gets more phaser-y and faster as I dig in." The AI builds it. Not just a preset... a brand new algorithm. No other guitar gear on earth can do this, and it comes FREE with Stratus and Nimbus. --- NEURAL AMP MODELER — 300,000+ AMP & GEAR CAPTURES In partnership with TONE3000, get instant access to a massive community library of Neural Amp Modeler captures — real tube amps, cabs, and gear, modeled with stunning accuracy. Browse, load, and A/B between model variants right in the app, and share NAM-powered presets with anyone through Chaos Cloud. Need cabs too? Add Impulse Responses (IRs) as their own effect, also available from TONE3000 for free in the app. --- BRING YOUR OWN — UPLOAD YOUR CAPTURES & IRs Got your own amp captures or impulse responses? Upload your private NAM captures (.nam) and IRs (.wav) straight from the app and drop them onto your board like any other effect. They stay private to your account — your personal tone collection, ready on any device you sign into. --- TWO PRODUCTS. ONE APP. UNLIMITED TONES. STRATUS® — The Compact Multi-Effects Pedal • Fits anywhere on your pedalboard • Replaces overdrive, distortion, delay, reverb, chorus, phaser, wah & more • 5-minute looper built-in • Built-in tuner • Chain up to 7 effects in any order NIMBUS® — The Most Powerful Modeling Amp • World-class amp modeling with built-in speakers • Dual inputs for guitar, bass, vocals, or any instrument • Full effects platform — same Tone Shop® library as Stratus • Everything a musician needs in one portable unit • Practice, record, and perform with a single device --- KEY FEATURES: • AI FX Builder — Create custom effects from text prompts • Neural Amp Modeler — 300k+ amp & gear captures via TONE3000 • Impulse Responses — Add IRs as effects for cabs, rooms & spaces • Upload your own — Bring your private NAM captures & IRs into the app • Open marketplace — Download effects from top 3rd party brands • Live chromatic tuner — A full-screen tuner keeps you in tune • 5-minute looper — Record, layer, and loop hands-free • Cloud preset backup — Presets auto-saved to your account and restored on any device • Unlimited presets — Save, load, and share (NAM included) with friends • Chain multiple effects — Build complete signal chains, with drag-and-drop reordering • Hands-free switching — Use Preset Control or MIDI • Optimized for iPad & Mac — Big-screen layouts, not a stretched phone view • Regular updates — New effects and features added constantly --- PERFECT FOR: • Worship & church musicians • Rock, blues, jazz & metal players • Tone chasers hunting real amp & gear captures • Singer-songwriters & loopers • Gigging musicians who need portability • Home studio recording • Bedroom players exploring new tones • Anyone tired of hauling heavy gear --- Whether you want classic tube amp tones, ambient soundscapes, or sounds no one's ever heard — Stratus and Nimbus have you covered. Two devices. One app. Unlimited possibilities. Powered by AI. *Note: Stratus or Nimbus hardware required

Screenshots

Guitar Notation Pro4 screens
Chaos Audio4 screens

Verdict

The call

The clearest difference is price: Chaos Audio at Free against Guitar Notation Pro's $149.00. Chaos Audio also leads on review sentiment (94% vs 56%) and rating (4.6 vs 4.1). Guitar Notation Pro's advantage is in-app purchases (none vs 41) and iOS requirement (13 vs 15.0). On ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Chaos Audio is free to download; Guitar Notation Pro costs $149.00 up front. Chaos Audio sells 41 one-off in-app purchases. Guitar Notation Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Chaos Audio holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 24 and 27 respectively. Written reviews point the same way: 56% of Guitar Notation Pro's written reviews are positive against 94% of Chaos Audio's.

UpkeepUpdate frequency

Guitar Notation Pro ships an update every 3 months, Chaos Audio every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
Guitar Notation Pro versus Chaos Audio: the parameters behind the verdict, then further details
ParameterGuitar Notation ProChaos Audio
Price$149.00Free — better
Rating4.1 (24 ratings)4.6 (27 ratings) — better
Positive reviews55.6% of reviews94.1% of reviews — better
Number of ratings2427 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size153 MB152 MB
Age rating4+4+
Developer嵩 张Chaos Audio

Customer experience

Guitar Notation Pro

All ratings24 ratings
Positive79.2%
Neutral4.2%
Negative16.7%
Written reviews18 reviews
Positive55.6%
Neutral5.6%
Negative38.9%

Chaos Audio

All ratings27 ratings
Positive88.9%
Neutral3.7%
Negative7.4%
Written reviews17 reviews
Positive94.1%
Neutral5.9%
Negative0.0%

In-app purchases

None

Guitar Notation Pro

No in-app purchases

41 purchases

Chaos Audio

One-time41
  • ApolloFree
  • JCVM Lite$9.90
  • Twin Classic Lite$9.90
Show 38 more
  • Tweaker Lite$9.90
  • MORNING STAR$9.99
  • TALKING HEAD$9.99
  • Smooth Reverb by ChowDSP$10.00
  • Muff Drive by ChowDSP$10.00
  • Opto Phase by Chow DSP$10.00
  • Poly Octave$10.00
  • LUPAN$12.99
  • Schnobel Tone$12.99
  • Galileo$14.90
  • Constellation$14.90
  • Spring Reverb$14.90
  • SUPERNOVA$14.90
  • Tycho$14.90
  • Eclipse$14.90
  • ROTISSERY$14.90
  • Gravity$14.90
  • GEMINI$14.90
  • INVASION$14.90
  • PLUTO$14.90
  • Artemis$14.90
  • URSA MAJOR$14.90
  • ORBITER$14.90
  • URANUS$14.90
  • Cosmos$14.90
  • VOID$14.90
  • Luna$14.90
  • Astro$14.90
  • WORMHOLE$14.90
  • MARINER$14.90
  • PEGASUS$14.90
  • URSA MINOR$14.90
  • WARP SPEED$14.90
  • ODYSSEY$14.90
  • The Leveler by magnetophon$19.49
  • ARES$19.90
  • Dark Matter$24.90
  • Daily Driver$27.90

Questions

Is Guitar Notation Pro free?
Guitar Notation Pro costs $149.00, with no in-app purchases.
Is Chaos Audio free?
Chaos Audio is free to download, with in-app purchases available.
Which has better reviews, Guitar Notation Pro or Chaos Audio?
Chaos Audio is rated higher. Guitar Notation Pro averages 4.1 out of 5 from 24 ratings, while Chaos Audio averages 4.6 from 27 ratings.
Do Guitar Notation Pro or Chaos Audio have ads?
Neither Guitar Notation Pro nor Chaos Audio shows ads.
Which is updated more often, Guitar Notation Pro or Chaos Audio?
Guitar Notation Pro ships an update every 3 months, and Chaos Audio every 2 weeks. Most recently, Guitar Notation Pro was updated on October 24, 2026 and Chaos Audio on October 25, 2026.

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