Esspresso vs Solo Harmony
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Esspresso
This advanced audio effect offers professional de-essing with an intuitive interface. It functions as both a standalone app and an AUv3 plugin, allowing independent control over detection and suppression frequencies for precise sibilance management.
- Standalone app and AUv3 plugin
- Independent detection and suppression frequencies
- Visual frequency response view
- Detector sensitivity gain
- Visual reduction and detector RMS
- Load/save presets
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This audio effect is an advanced de-esser with an intuitive user interface, and works both as an AUv3 audio plugin, and as a standalone app. The uniqueness of Esspresso is that the detection frequency range isn’t coupled with the suppressors frequency range. That means you can listen to a specific frequency and compress another one, which is often what you’ll want from a professional de-esser. With a fast and accurate frequency response view, you will easily get full control over annoying S-sounds that ruin the mix. Noteworthy features: • Works both as a standalone app and as an Audio Unit Extension (AUv3) with compliant hosts • Detector sensitivity gain • Visual reduction RMS • Visual detector RMS • Suppressor can work as allpass, bandpass and highpass • Load / Save presets
Solo Harmony
This app synthesizes harmony parts with your solo singing in real-time. Mix up to five harmony parts using an ad-lib keyboard and adjust pitch for chorus effects. Record and playback synthesized sounds, or use it for karaoke practice.
- Ad-lib Harmony Mix engine
- Real-time multi-part mixing
- Subtle pitch shift for chorus effect
- Recording and playback
- Input from microphone, files, and other apps
- Karaoke practice mode
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Automatically harmonizes with your solo singing. ◆ Equipped with an [Ad-lib Harmony Mix] engine, allowing you to synthesize harmony parts with ad-lib performances while singing. ◆ Use the ad-lib keyboard to mix up to 5 parts simultaneously in real-time. ◆ The subtle pitch shift setting allows you to produce a chorus effect. ◆ Supports recording and playback of synthesized sounds. ◆ Supports not only microphone input, but also recording files and shared files from other apps. ◆ You can mix harmony parts while playing audio files. ◆ Useful for practicing karaoke harmony by playing the original vocals quietly and the harmony parts loudly. ◆ Recorded files can be sent to AirDrop, SNS, etc. as shared files. ● Notes: ・To prevent howling, the app automatically disables the microphone input signal while playing audio files. ・When using Bluetooth earphones, it may not be possible to monitor the sound being recorded.
Screenshots
Verdict
The clearest difference is rating: Solo Harmony at 4.0 against Esspresso's 3.3. Solo Harmony also leads on price ($0.99 vs $9.99) and device support (3 vs 1). Esspresso's advantage is review sentiment (40% vs 20%) and ratings volume (17 vs 3). On update cadence, ads, in-app purchases and monetization model 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
Esspresso costs $9.99 and Solo Harmony $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Solo Harmony holds the better App Store score, 4.0 against 3.3. That said, the two scores are not equally well evidenced: Esspresso has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 40% of Esspresso's written reviews are positive against 20% of Solo Harmony's, so the app with the better star average is not the one people write more warmly about.
Esspresso ships an update every 9 months, Solo Harmony every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Esspresso | Solo Harmony |
|---|---|---|
| Price | $9.99 | $0.99 — better |
| Rating | 3.3 (17 ratings) | 4.0 (3 ratings) — better |
| Positive reviews | 40.0% of reviews — better | 20.0% of reviews |
| Number of ratings | 17 — better | 3 |
| Update frequency | Every 9 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Klevgrand Produkter AB | Masanori Katsuta |
Customer experience
Esspresso
Solo Harmony
In-app purchases
Esspresso
No in-app purchases
Solo Harmony
No in-app purchases









