ChordWeave vs Opaline FM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordWeave
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ChordWeave is a chord progression and songwriting app for iPhone and iPad. Pick one of 24 keys and a mood to hear a chord progression instantly, play a keyboard and have ChordWeave name your chords, and write lyrics with Apple Intelligence. It runs on your device, with no account. HEAR A PROGRESSION INSTANTLY ChordWeave opens on the Composer with a playable progression ready. Pick any of 24 keys and a mood, tap Generate, and hear it right away. Where Apple Intelligence is available, it refines the result on your device. Reorder chords, hear each one, and see its notes. ADD TO A SONG (PRO) Turn a progression into a Song Project: arrange intro, verse, chorus, bridge and more, reorder the sections, and play the whole song. Try a playable sample project first. WHY IT WORKS (PRO) Get a short theory explanation for each progression, tied to its chords, so you learn why it sounds the way it does. PLAY & NAME CHORDS Play on the on-screen keyboard or a connected MIDI keyboard and ChordWeave names the chord. Build a progression by playing, then get suggestions for what comes next in pop, jazz, blues and more. Includes a metronome. Listen for Key (iOS 27) detects the key and tempo from a few seconds of playing or singing. LYRIC WRITING With Apple Intelligence, write verses, a chorus and a bridge for your mood, theme and style. Edit and save them in your library. EXPORT Share a progression as a picture card (chords, key and tempo), export it as a MIDI file for your DAW, or share it as text. MADE FOR iPAD A native iPad app in every orientation, with two-column layouts that use the whole screen. MUSIC THEORY REFERENCE Scales and modes in every key, the chords of each scale with Roman numerals, and common progressions. SIRI & SHORTCUTS Ask Siri for a chord progression, or see your recent compositions, without opening the app. Saved compositions also appear in Spotlight search. PRIVATE BY DESIGN Apple Intelligence features run entirely on your device, and your songs are never uploaded to a server. Without Apple Intelligence, ChordWeave uses built-in music theory instead. No account. No tracking. No ads. FREE AND PRO Free: play and chord naming, the Composer, single-progression MIDI and text export, lyrics, music theory, Siri, and up to 3 saved compositions and 3 saved lyric sets. ChordWeave Pro: unlimited saves, Song Projects and Why it works. Choose Annual, Lifetime, Monthly or Weekly. COMMON QUESTIONS Does ChordWeave identify chords from a song or recording? No. It names the chords you play on the on-screen keyboard or a connected MIDI keyboard. Listen for Key (iOS 27) detects the key and tempo from a few seconds of playing or singing, not the chords. Is it free? You can start free: chord naming, the Composer, lyrics, music theory, MIDI and text export, and up to 3 saved compositions and 3 saved lyric sets. ChordWeave Pro adds unlimited saves, Song Projects and Why it works. Do I need Apple Intelligence? No. Progressions and chord naming use built-in music theory. AI-written lyrics need Apple Intelligence; without it, Lyrics gives simple starter lines. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple Account. Terms of Use: https://dotdotdotapps.com/terms Privacy Policy: https://dotdotdotapps.com/privacy Without Apple Intelligence, Lyrics gives you simple starter lines based on your theme instead of AI-written lyrics.
Opaline FM
Create and perform music with a virtual keyboard and advanced sound editing tools. Explore various playing modes, connect external MIDI devices, and manage your sound library. Offers deep control over FM synthesis parameters.
- Virtual keyboard for immediate performance
- Detailed sound editing (algorithm, operators, envelopes, LFO, effects)
- Poly/Mono and Full/Fingered portamento
- Single, Dual, and Split playing modes
- External MIDI keyboard support
- 32-voice SysEx bank management
- Built-in reverb, delay, chorus, and tone effects
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Opaline FM at none against ChordWeave's 4. Opaline FM also leads on iOS requirement (16.0 vs 26.0). On price, update cadence, 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. ChordWeave sells 4 in-app purchases, starting at $1.99 per 7 days. Opaline FM asks for nothing beyond the download.
ChordWeave ships an update every 10 days, Opaline FM every 6 days. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.
| Parameter | ChordWeave | Opaline FM |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 10 days | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dotdotdotapps LLC | Hideki Konishi |
In-app purchases
ChordWeave
- ChordWeave Weekly$1.997 Days
- ChordWeave Monthly$3.991 Month
- ChordWeave Annual$27.991 Year
- ChordWeave Premium$49.99
Opaline FM
No in-app purchases









