ChordWeaver vs mididelay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordWeaver
Compose music using advanced harmonic techniques with this app. Explore 3636 chord resolutions and 10 instrument ensembles. It guides you through chord progressions, allowing you to listen, transpose, and save your compositions.
- Modern harmony composition
- 3636 chord resolutions
- 10 instrument ensembles
- Listen to chord resolutions
- Transpose chords
- Save as .chords or .mid
- Mirror to main system
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ChordWeaver is a music composition app based on 5-part modern harmony extensively used in symphonic scores, cinematic soundtracks, jazz chord changes and contemporary songwriting. ChordWeaver offers 3636 chord resolutions/combinations and 10 instrument or ensembles with 1920 sound files. The techniques used include altered chords (or unresolved appoggiaturas), parallel ninths, giant steps, tritone substitutions, bi-tonal ambiguities as well as traditional chord progressions. For some composers ChordWeaver will provide a fast, easy way to work with modern harmony. For other composers it offers a whole new world of possibilities and variations on traditional progressions. For the seasoned pro, it is a huge time saver. Here is how ChordWeaver efficiently guides you through the composition process. You choose your starting chord, and ChordWeaver instantly shows you and lets you listen to multiple resolutions to that chord, traditional ones and more creative, unusual ones. With each subsequent chord choice, the process is repeated. ChordWeaver seamlessly guides you to multiple possible chord options (some you will be familiar with and others you will not have considered), lets you listen to your work in progress, offers the option to transpose up or down and allows you to save your final product as a .chords file or .mid file and export or share it. You can also mirror ChordWeaver on your main system, play back the audio and improvise on your favorite instrument. Likewise, you could import the MIDI file into your sequencer and play back the harmonies using your preferred sample libraries. These chord options in ChordWeaver are the result of decades of studying the scores of the masters in various genres. They reflect the actual use of these chord progressions and resolutions by these composers and are not simply based on purely theoretical considerations.
mididelay
This app applies traditional delay effects to MIDI data, allowing for complex sound manipulation. It offers multiple independent delay lines, various MIDI message processing, and customizable feedback chains with built-in effects. Organize lines sequentially or in parallel for unique sonic textures.
- 8 independent delay lines with feedback
- Processes MIDI notes, CC, aftertouch, pressure, pitch bend
- Customizable feedback modes (average, min, max)
- Sequential and parallel delay line algorithms
- Scale quantize, pitch, and velocity randomization
- 3 independent scenes with cross-fading
- Standalone and AUv3 support
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mididelay is an implementation of traditional delay effect adapted for the MIDI data. It features: • 8 independent delay lines with feedback • Each delay line can process MIDI notes, control change, aftertouch, polyphonic key pressure and pitch bend messages. • For the feedback, the “feedback level” is applied to the messages; note messages change velocity and all other messages can be mixed with previous values using one of three modes (average, minimum and maximum value) • It’s possible to organise delay lines in different possible ‘algorithms’, sequentially and/or in parallel • There are three effects available inside delay’s feedback chain: scale quantise, pitch and velocity value operations randomisation • Each ‘preset’ contains 3 independent scenes marked “A”,”B” and “C”, it’s possible to cross- fade between them and adjust overall amount of the effect with 2D pad. • Simple mode : only one delay with scenes morphing. Standalone and AUv3
Screenshots
Verdict
The clearest difference is price: mididelay at $4.99 against ChordWeaver's $9.99. mididelay also leads on device support (3 vs 1) and iOS requirement (15.6 vs 18.6). ChordWeaver's advantage is update cadence (every 3 months vs every 10 months). On rating, review sentiment, ratings volume and 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
ChordWeaver costs $9.99 and mididelay $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for ChordWeaver against 5.0 for mididelay. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
ChordWeaver ships an update every 3 months, mididelay every 10 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | ChordWeaver | mididelay |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 5.0 (5 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 3 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 474 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeannot Welter | Alexey Nadzharov |
Customer experience
ChordWeaver
mididelay
In-app purchases
ChordWeaver
No in-app purchases
mididelay
No in-app purchases









