MDX Player vs KG
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MDX Player
This app plays MDX music files, a format popular with the SHARP X68000 computer series. It supports background playback, remote control, and loop play, allowing you to relive classic computer music.
- MDX file playback
- Background playback
- Remote control support
- Loop playback
- Dropbox access
- Bundled sample sound
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MDX Player for iOS 1980年代後半〜1990年代にかけて、一部で熱狂的な支持を得た "パーソナルワークステーション" SHARP X68000シリーズ。 X68000シリーズ用の高性能な内蔵音源ドライバとして広く普及したMXDRV。 MXDRV用の音楽データMDX。MDXは演奏データを収録した拡張子.mdxのファイル。 再生に必要なPCMデータを収録した拡張子.pdxのファイルを伴うこともあります。 MDX Player for iOSは、そのMDXの再生に対応したプレイヤーです。 MDXはパソコン通信を媒介として、その数60,000とも言われるほど大量に作られ、流通しました。 伝説的なデータが、今なおその作者のハンドル名と共に、インターネット上に残されています。 * バッググラウンドプレイ * リモートコントロール * ループプレイ * Dropboxアクセス サンプルサウンドとして X68030のテーマ (C) moyashi (hitoriblog.com) をバンドルしています! あの当時を思い出しながら、押入れに眠っているかもしれない5inchフロッピーやMOディスクを掘り出しましょう。
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. ◆ 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!
Screenshots
Verdict
The clearest difference is update cadence: KG at every 3 weeks against MDX Player's every 15 months. MDX Player's advantage is iOS requirement (15.6 vs 26.5). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
MDX Player ships an update every 15 months, KG every 3 weeks. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | MDX Player | KG |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 95.0% of reviews | — |
| Update frequency | Every 15 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.5 |
| Further details — not scored | ||
| Size | 13 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | NagisaWorks, K.K. | Kouki Yoshimoto |
In-app purchases
MDX Player
No in-app purchases
KG
No in-app purchases









