Harmony Helper vs Solo Harmony
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmony Helper
This app provides singers with real-time feedback on pitch and timing for any song. Practice your vocal part privately with adjustable volume controls and follow expert-guided harmony learning steps. It's designed for singers of all levels to improve their performance.
- Real-time pitch and timing feedback
- Vocal part volume controls
- 5 Steps to Learning Harmonies
- Practice any song
- Patented pitch-tracking technology
Read full descriptionHide full description
Harmony Helper is like having a 24/7 digital rehearsal room in your back pocket. It’s a singing app [more…] that allows you--and singers of all levels--to get real-time feedback on any song, anytime, anywhere. Practice your custom vocal part without the pressure and constraints of a live setting. Harmony Helper is made by singers for singers: Our patented technology makes it possible to learn any song, giving accurate feedback on pitch and timing as you sing. Whether you’re practicing to perform with a choir, in musical theatre, with a band, for a singing competition, or even for fun, Harmony Helper is here to help. Key Features: - Real-Time Feedback: Powered by our patented pitch-tracking algorithm, you’ll see exactly where you need to focus and improve. - Vocal Part Volume Controls make it easy to isolate your vocal part as you learn. - Try our 5 Steps to Learning and Holding Harmonies, which guides you through an expert-backed approach to your practice. Download the app and practice songs from the Harmony Helper Songbook and our partners for free. Terms Of Service: https://harmonyhelper.com/terms-of-service/ Privacy Policy: https://harmonyhelper.com/privacy-policy/
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
Read full descriptionHide full description
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 price: Harmony Helper at Free against Solo Harmony's $0.99. Harmony Helper also leads on update cadence (every 3 weeks vs every 7 months) and review sentiment (49% vs 20%). Solo Harmony's advantage is in-app purchases (none vs 4). On rating, ads, device support and iOS requirement 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
Harmony Helper is free to download; Solo Harmony costs $0.99 up front. Harmony Helper sells 4 in-app purchases, starting at $4.99 per month. Solo Harmony asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.9 for Harmony Helper against 4.0 for Solo Harmony. That said, the two scores are not equally well evidenced: Harmony Helper has 186 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 49% of Harmony Helper's written reviews are positive against 20% of Solo Harmony's.
Harmony Helper ships an update every 3 weeks, Solo Harmony every 7 months. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | Harmony Helper | Solo Harmony |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.9 (186 ratings) | 4.0 (3 ratings) — better |
| Positive reviews | 48.7% of reviews — better | 20.0% of reviews |
| Number of ratings | 186 — better | 3 |
| Update frequency | Every 3 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 123 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Harmony Helper LLC | Masanori Katsuta |
Customer experience
Harmony Helper
Solo Harmony
Bugs and requests
Harmony Helper
Reported bugs
14 issues- App freezes on account creation and button clicks
- Crashes on launch for multiple device types
- Buttons unresponsive or slow to register
- App crashes after recording third voice
- Playback stops working after music import
Show 9 moreShow fewer
- Library access denied despite active subscription
- App hangs during vocal part selection
- Subscription restoration loop issue
- Songs stuck in loading/gray phase
- Harmony help feature non-functional
- Bluetooth detection malfunction
- iPad display issues (portrait/landscape)
- Missing song library on app launch
- Incomplete note scanning from sheet music
Requested features
16 requests- Lyrics display for songs
- Expanded song library with modern music
- Pop, hip-hop, country, and rock songs
- Ability to adjust key and tempo
- Bluetooth headphone support
Show 11 moreShow fewer
- Ability to hear all harmonies simultaneously
- Pitch line visibility when hitting correct notes
- Desktop/Mac app version
- Lifetime purchase option instead of subscription
- Note correction/review interface
- Extended note range beyond E2-A5
- Vocal line display option
- Swing rhythm support
- Export feature
- Scales practice option
- More diverse song selection beyond religious content
Solo Harmony
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Harmony Helper
- Monthly Subscription7 Days trial$4.991 Month
- Director Monthly Subscription7 Days trial$5.991 Month
- Annual Subscription7 Days trial$49.991 Year
Show 1 moreShow fewer
- Director Annual Subscription7 Days trial$59.991 Year
Solo Harmony
No in-app purchases
