KG vs K.O. II
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
KG
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[From '80s Legend to Modern Era: Put the Feel of Authentic Hardware in Your Hands] "KG-SQUARE" is an analog modeling synthesizer app that packs the aesthetics and intuitive operation of professional hardware into an iPhone-sized format. While inheriting the simplicity of its predecessor, "FX-SQUARE," this version delivers a massive upgrade to both its sound engine and UI. From thick, punchy synth basses to dreamlike, immersive pads, it features a wide range of high-quality tones ready to elevate modern music production. โ Key Features Highly Immersive Hardware-Style UI: Designed with lifelike 3D knobs and LED indicators, giving you the professional feel and excitement of tweaking real gear. KAOSS PHYSICS (XY Pad): Simply glide your finger across the right-side pad to dynamically control Cutoff, Resonance, and effects. Create sweeping, space-like tonal shifts in real time as you play. Two Powerful Effects: Equipped with "REVERB" for deep spatial warmth and "DELAY" to add movement to your echoes. Seamlessly blend them using dedicated knobs. Polished Sound Presets: Carefully selected, massive sounds unique to analog modeling, including MP Bass, MP Lead, MP PolySynth, and more. Smooth Playability: Features responsive mini-keys along with screen-edge protection to prevent accidental touches, keeping you focused entirely on your performance. Perfect as a companion synth for music production, on-the-go sound design, or intuitive finger-play performances. Experience the ultimate analog modeling sound today!
K.O. II
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K.O. II is a compact native beat-making instrument for iPhone and iPad. Tap responsive pads, switch between drum, percussion, bass, and key banks, build 16-step patterns, and explore 38 included demo grooves. Designed as a focused standalone music surface, K.O. II gives you a hardware-inspired workflow for quick ideas, rhythm practice, and portable sound experiments.
Screenshots
Verdict
The clearest difference is iOS requirement: K.O. II at 16.0 against KG's 26.5. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | KG | K.O. II |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | โ |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.5 | 16.0 โ better |
| Further details โ not scored | ||
| Size | 36 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Kouki Yoshimoto | ๆตทๆด ็ฌฆ |
In-app purchases
KG
No in-app purchases
K.O. II
No in-app purchases






