Chaos Audio vs StringKeeper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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
StringKeeper
Read full descriptionHide full description
Never wonder when you last changed your strings again. StringKeeper helps guitarists track string installations across every guitar in their collection, so your instrument always sounds its best. Track Every Guitar: Add all your guitars with photos, names, and notes. See at a glance which ones are due for a string change and which were recently restrung. Log String Changes: Record the string brand, gauge, and date every time you restring. StringKeeper tracks your history so you can see what worked and what didn't. Get Reminded: Set a reminder after a string change and StringKeeper will notify you when it's time to restring — no more playing on dead strings. Log Play Sessions & Maintenance: Track how often you play each guitar and log maintenance records to keep a full history of each instrument. If you notice a guitar has dead strings you can set a "Needs string change" flag which will cause an alert icon to appear next to the guitar. Pick a Guitar to Play: Not sure which guitar to pick up tonight? Use the slot machine to let StringKeeper choose for you.
Screenshots
Verdict
The clearest difference is in-app purchases: StringKeeper at none against Chaos Audio's 10. StringKeeper also leads on update cadence (every 2 days vs every 2 weeks). Chaos Audio's advantage is iOS requirement (15.0 vs 17.0). On price, 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
Both are free to download. Chaos Audio sells 10 one-off in-app purchases. StringKeeper asks for nothing beyond the download.
Chaos Audio ships an update every 2 weeks, StringKeeper every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Chaos Audio | StringKeeper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (27 ratings) — better | — |
| Positive reviews | 94.1% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 152 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Chaos Audio | John Carleton |
In-app purchases
Chaos Audio
- JCVM Lite$9.90
- Twin Classic Lite$9.90
- Tweaker Lite$9.90
Show 7 moreShow fewer
- Poly Octave$10.00
- Constellation$14.90
- ORBITER$14.90
- URANUS$14.90
- Luna$14.90
- MARINER$14.90
- Daily Driver$27.90
StringKeeper
No in-app purchases









