Opaline FM vs ThunderBeast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Opaline FM
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【演奏と音色編集】 iPhone単体で起動し、画面鍵盤からすぐに演奏できます。Play画面では音色選択、ピッチベンド、モジュレーション、ポルタメントなどを操作できます。 Edit画面では、アルゴリズム、各オペレーターのRatio、Detune、Level、エンベロープ、キーボードレベルスケーリング、LFO、エフェクトなどを細かく編集できます。 POLY/MONO、FULL/FINGEREDポルタメントに対応。SINGLEに加え、2つの音色を重ねるDUAL、鍵盤を分割するSPLIT演奏も利用できます。 【外部MIDI対応】 外部MIDIキーボードを接続して演奏できます。Note On/Off、ピッチベンド、モジュレーションホイール、サステインペダル、ポルタメント制御、All Sound Off、All Notes Offに対応しています。 【音色ライブラリ】 32音色SysExバンクの読み込みと保存に対応。音色とエフェクト設定を含むライブラリを管理でき、作成した音色をバンクごとに整理できます。 【主な機能】 ・4オペレーターFM音源 ・8種類のFMアルゴリズム ・オペレーター4のフィードバック ・ピッチエンベロープ、振幅エンベロープ、LFO ・Ratio、Detune、Level設定 ・キーボードレベルスケーリング ・ベロシティ、振幅モジュレーション ・リバーブ、ディレイ、コーラス、Tone ・POLY/MONO演奏 ・FULL/FINGEREDポルタメント ・ピッチベンド範囲:0~12半音 ・SINGLE/DUAL/SPLIT演奏モード ・外部MIDI入力 ・32音色SysExバンク対応
ThunderBeast
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Rain, wind and thunder, all synthesized in real time. No samples, no loops. Every storm ThunderBeast makes is a storm happening for the first time. EIGHT CITIES, EIGHT SKIES A New York night storm. London drizzle. A Miami squall. Seattle mist. The Bangkok monsoon. A Reykjavik gale. An evening shower in Kyoto. A Cape Town storm front. Choose a preset and the scenery, the weather and the colour of the panel change together, so the city you are listening to is the city in front of you. TEN WEATHER CONTROLS Precipitation and drop size shape the rain; wind speed, gust and turbulence move the air. Storm rate decides how often lightning happens and storm energy decides how heavy each strike lands, while cell distance walks the storm from directly overhead out to the horizon. Humidity and pressure change the whole feel of the sky, and width and gain finish it. FOUR KINDS OF LIGHTNING A crack at close range, thunder that rolls, strikes that repeat, a sheet of light across the whole sky - each one carrying the swell that comes back off the landscape. The bolt is drawn on screen as it happens and changes colour as the storm moves away. No two strikes are ever the same. PLAYABLE WEATHER Play from C2 up and the rain rings at that pitch. Chords and melodies come out of the falling rain. Play below C2 and lightning strikes instead: pitch sets the distance, velocity sets the weight. Twelve hardware controller presets are built in; the mod wheel is storm energy and the sustain pedal is lightning. STANDALONE AND AUv3 Use it on its own, or as an AUv3 plug-in in GarageBand, Logic Pro and others. START FREE Three cities are free from the first launch. ThunderBeast Pro is a one-time purchase, not a subscription: it opens the remaining cities (eight in all) and adds recording and export to WAV, AIFF and FLAC.
Screenshots
Verdict
The clearest difference is in-app purchases: Opaline FM at none against ThunderBeast's 1. Opaline FM also leads on update cadence (every 6 days vs every 2 weeks). ThunderBeast's advantage is device support (4 vs 1). On price, ads and iOS requirement 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. ThunderBeast sells 1 one-off in-app purchase. Opaline FM asks for nothing beyond the download.
Opaline FM ships an update every 6 days, ThunderBeast every 2 weeks. The most recent releases landed on October 4, 2026 and September 28, 2026 respectively.
| Parameter | Opaline FM | ThunderBeast |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideki Konishi | Tomocreate, Inc. |
In-app purchases
Opaline FM
No in-app purchases
ThunderBeast
- ThunderBeast Pro$9.99









