Chord NOTE vs rrarrow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chord NOTE
This app helps songwriters find chords that match melodies and provides tools for creating chord progressions. It also includes a scale library and can display vocal pitch to aid in composition.
- Chord finding for melodies
- Chord Progression function
- Scale library
- Vocal pitch display
- Key finding
- iPad Split View/Slide Over support
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Chord NOTE is a Songwriter’s assistant tool. It assists in finding the right chords to match a melody or musical phrase. And it has great Chord Progression function and Scale library. Chord NOTE supports Slide Over and Split View on iPad, and provides the appropriate display and operation for iPhone and iPad. You wrote new melody came into your mind, but you could not apply some chords for your melody… At a time like this, you can get guides to find some chords that match your melody by Chord NOTE. If you have composed some songs already, you know almost melody and chord have some same notes. Because the main part of melody is made up of constituent notes of chord in most cases. In the same way, you’ll be able to find Key to match your melody by Chord NOTE. So Chord NOTE is very useful for finding the chord and key. If you record your singing melody, you can display the pitch of your voice. And you can sketch your songs by Chord Progression function. Chord Progression function will provide numerous features for you. Chord NOTE supports widening the imagination of your wings for real composer. Advanced Option : Chord NOTE works fine without this option. However, when you’ll buy this low price add-on, you can use more Chords and Scales. It will provide a complete set usually. You can read full function description at support page. http://therootage.com/iphone/chord-note-en/
rrarrow
Create experimental audio effects with extended feedback capabilities. This modular noise machine offers a simplified interface for fast assembly and flexible connectivity, allowing you to control processing parameters with the audio signal itself.
- Modular audio effect processing
- Extended feedback capabilities
- 20 audio processing blocks
- Built-in audio recorder
- MIDI controller support
- Audiobus and Inter-App Audio support
- Background audio playback
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rrarrow is the experimental noise machine / modular audio effect for the iOS featuring extended feedback capabilities. Key features: - Simplicity. The interface is simplified for faster assembly and more flexible connectivity — you can assemble your effect very fast and control all the processing parameters with the audio signal! - Feedback capabilities. You can add feedbacks to the audio chain to get some chaotic noise sounds . - 20 blocks for audio processing: - Sine generator. Basic oscillator with sine waveform - Saw and square oscillators - Signal multiplier - Delay - Frequency shifter - Envelope follower - “Lorenz attractor” - Quantizer - Sample-and-hold - Reverb - Special Lowpass filter - Clipper - Nonlinear shaper (for self-oscillating circuit) - two special waveshaping modules with “fold” and “wrap” distortion blocks that work with audiofiles: - lookup table. Loads up to 10 seconds of audiofile to be used as nonlinear transfer function - Players with/without interpolation and speed control - "scrub" block for semi-random granular file playback - Built-in audio recorder. Share the audio file to other applications or AudioShare. - MIDI support! Assign MIDI controllers to all faders. Supports network midi and has a virtual MIDI in. - Audiobus support. Now you can stream live audio directly to other Audiobus-compatible apps! See http://audiob.us for more information. Works as input and filter. - Audiobus state saving support - Inter-App Audio support - Background audio support: enabled when connected to Audiobus and user switchable otherwise. The 'background audio" switch is located in app's "settings" page iPad2/iPhone4S or newer is recommended for complex presets this app is optimized for iPad and iPhone 5 To get started please watch the tutorial videos on the website and read the user guide inside the app
Screenshots
Verdict
The clearest difference is rating: rrarrow at 4.6 against Chord NOTE's 3.0. rrarrow also leads on in-app purchases (none vs 1) and review sentiment (81% vs 62%). Chord NOTE's advantage is price ($2.99 vs $3.99). On ads 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
Chord NOTE costs $2.99 and rrarrow $3.99 up front. Chord NOTE sells 1 one-off in-app purchase. rrarrow asks for nothing beyond the download.
rrarrow holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: rrarrow has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 62% of Chord NOTE's written reviews are positive against 81% of rrarrow's.
Chord NOTE ships an update every 2 months, rrarrow every 4 weeks. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.
| Parameter | Chord NOTE | rrarrow |
|---|---|---|
| Price | $2.99 — better | $3.99 |
| Rating | 3.0 (3 ratings) | 4.6 (19 ratings) — better |
| Positive reviews | 61.5% of reviews | 81.3% of reviews — better |
| Number of ratings | 3 | 19 — better |
| Update frequency | Every 2 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.1 | 15.6 — better |
| Further details — not scored | ||
| Size | 31 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Hidenori Matsuoka | Alexey Nadzharov |
Customer experience
Chord NOTE
rrarrow
In-app purchases
Chord NOTE
- Advanced Option$1.99
rrarrow
No in-app purchases









