Xkey Plus vs MixAlign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Xkey Plus
This app enhances the functionality of ESI Xkey musical keyboards on mobile devices. It allows users to update firmware, customize velocity curves, and configure key sensitivity and timings for an advanced user experience.
- Check for new Xkey firmware
- Velocity curves editor
- Configure Xkey sensitivity & timings
- Access all Xkey parameters
- Configure key & button assignments
- Access Xkey documentation & support
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◆◆◆ Xkey Plus ◆◆◆ This app is dedicated to ESI Xkey musical keyboard. It is an ideal companion to your mobile keyboard. FEATURES ◆ Check for new Xkey firmware ◆ Velocity curves editor ◆ In-depth configuration of Xkey sensitivity & timings (advanced users) ◆ Access to all Xkey parameters (advanced users) ◆ Possibility to configure new assignments to all keys & buttons (requires Fw 1.2+) ◆ Direct access to Xkey documentation & support REQUIREMENTS ◆ Xkey musical keyboard ◆ USB cam kit or lightning cable ◆ Compatible with iPad (iOS 7 or later) Do not hesitate to contact us if you find any problem on this app. If you like this app, don't forget to write a positive review ! ESI
MixAlign
This app helps music producers and mixers optimize their audio for various streaming platforms. It allows you to match loudness standards like LUFS -14, adjust EQ, and control dynamics for professional playback on services like Spotify and Apple Music.
- Emulate streaming standards (Spotify, Apple Music, Tidal)
- Match LUFS targets
- Adjust EQ and dynamics
- Optimize mixes for pro playback
- Simple audio upload and comparison
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MixAlign: Upload audio and emulate streaming standards. Match LUFS -14, EQ, and dynamics for Spotify, Apple Music, Tidal, and more. Optimize mixes for pro playback across platforms. Simple upload, compare, and align for producers and mixers. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: MixAlign at 5.0 against Xkey Plus's 2.9. MixAlign also leads on update cadence (every 9 days vs every 3 months). Xkey Plus's advantage is in-app purchases (none vs 1) and ratings volume (13 vs 1). On price, 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. MixAlign sells 1 in-app purchase, starting at $2.99 per month. Xkey Plus asks for nothing beyond the download.
MixAlign holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: Xkey Plus has 13 ratings behind it against 1, so its average is the more settled of the two.
Xkey Plus ships an update every 3 months, MixAlign every 9 days. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.
| Parameter | Xkey Plus | MixAlign |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 35.7% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 9.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | ESI Audiotechnik GmbH | Ronald Bonham |
Customer experience
Xkey Plus
MixAlign
In-app purchases
Xkey Plus
No in-app purchases
MixAlign
- MixAlign Pro Monthly$2.991 Month
