# Kalliopeia vs 528 Player Plus

The clearest difference is review sentiment: Kalliopeia at 50% against 528 Player Plus's 0%. Kalliopeia also leads on rating (3.5 vs 1.0) and in-app purchases (none vs 10). 528 Player Plus's advantage is price (Free vs $4.99) and device support (3 vs 1). On ratings volume, update cadence and ads there is nothing between them.

528 Player Plus is free to download; Kalliopeia costs $4.99 up front. 528 Player Plus sells 10 one-off in-app purchases. Kalliopeia asks for nothing beyond the download.

Kalliopeia holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 50% of Kalliopeia's written reviews are positive against 0% of 528 Player Plus's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Kalliopeia | 528 Player Plus |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/kalliopeia/id1063951043/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/528-player-plus/id6739763108/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 79 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YU HASHIZUME](https://appshunter.io/developer/654717473) | [SYQEL INC](https://appshunter.io/developer/1671066431) |

## What reviewers say

### Kalliopeia

[App page](https://appshunter.io/ios/app/kalliopeia/id1063951043)

Experience your music in stunning detail with this high-resolution audio player. It supports a wide range of formats, offers advanced upsampling capabilities, and includes a powerful 11-band equalizer to customize your sound. Enjoy gapless playback, playlist creation, and more.

**Highlights:** High-res audio playback (DSF, DSD, FLAC, WAV, AIFF, ALAC, AAC, MP3), Audio upsampling to 192kHz, 11-band equalizer with presets, Gapless playback, Playlist creation and waitlist, Last.fm scrobbling

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 528 Player Plus

[App page](https://appshunter.io/ios/app/528-player-plus/id6739763108)

This app retunes your entire music library to the 528 Hz Solfeggio frequency in real-time. Experience your favorite songs with a new sense of harmony and restoration without altering original files. A free trial is available before a one-time purchase unlocks unlimited listening.

**Highlights:** Real-time 528 Hz retuning, Supports entire music library, Distraction-free interface, One-time purchase unlock, Free trial for 20 songs

**Features:** Family Sharing, Siri integration

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited 528 Hz retuning forever. | $19.99 | one-time |
| Frequency - 285 Hz | $19.99 | one-time |
| Frequency - 432 Hz | $19.99 | one-time |
| Frequency - 396 Hz | $19.99 | one-time |
| Frequency - 741 Hz | $19.99 | one-time |
| Frequency - 174 Hz | $19.99 | one-time |
| Frequency - 417 Hz | $19.99 | one-time |
| Frequency - 639 Hz | $19.99 | one-time |
| Solfeggio Core Bundle | $59.99 | one-time |
| All Frequencies | $99.99 | one-time |


## Frequently asked questions

### Is Kalliopeia free?

Kalliopeia costs $4.99, with no in-app purchases.

### Is 528 Player Plus free?

528 Player Plus is free to download, with in-app purchases available.

### Which has better reviews, Kalliopeia or 528 Player Plus?

Kalliopeia is rated higher. Kalliopeia averages 3.5 out of 5 from 2 ratings, while 528 Player Plus averages 1.0 from 2 ratings.

### Do Kalliopeia or 528 Player Plus have ads?

Neither Kalliopeia nor 528 Player Plus shows ads.

### Which is updated more often, Kalliopeia or 528 Player Plus?

Kalliopeia ships an update every 2 months, and 528 Player Plus every 2 months. Most recently, Kalliopeia was updated on November 11, 2026 and 528 Player Plus on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*