APM Sweep vs 852 Player Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
APM Sweep
This application helps measure and analyze a room's acoustical performance, including reverberation time and clarity. It suggests materials to improve sound quality and allows for saving, loading, and exporting results in common spreadsheet formats. PDF reports with photos can also be generated.
- Acoustical performance measurement
- Reverberation time and clarity analysis
- Material recommendation for improvement
- Save, load, and export results
- Generate PDF reports with photos
- Tutorial slideshow for guidance
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APM Sweep is the successor of the well known APM Tool: it let you quickly measure the acoustical performance of a room (reverberation time, clarity, etc. in octave and third octave bands), check if that room is well suited for its purpose and, if not, choose which materials can improve the acoustical quality. Everything still there but with an exciting improvement: now you can use all the power of the Exponential Sine Sweep technique for the measurement process, so your results can be extremely precise and accurate. You can also, save, load and export results in common spreadsheet format. The app can also generate pdf reports with photos. A tutorial slideshow explains the app use. Required at least iOS 11.0
852 Player Plus
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852 Player Plus: Awaken Intuition & Transform Your Music Elevate your consciousness and deepen your spiritual connection with 852 Player Plus, the revolutionary music player that automatically retunes your entire music library to the awakening 852 Hz frequency tuning. This powerful frequency is associated with intuitive power, spiritual awakening, and connecting with higher self. Effortlessly enhance your inner wisdom through sound, all while saving time, money, and valuable device storage—no manual file conversions needed! Why Choose 852 Player Plus? + Instant 852 Hz Retuning: Play your existing music collection and instantly experience it retuned to 852 Hz. This frequency is believed to help awaken your intuition, strengthen your spiritual connection, and promote a deeper understanding. + Save Time & Storage: Say goodbye to converting songs or cluttering your device with duplicate files. Simply open the app and play your favorite tracks. + Boost Intuition: Listen to music that resonates with the frequency of intuition, potentially helping you trust your inner voice and gain clarity in your life. Key Features: + Automatic Retuning: Your entire music library is seamlessly and instantly retuned to 852 Hz. Just press play! + Custom Playlists: Easily create and manage personalized playlists. Add songs in bulk and organize your favorite tracks in seconds. + Sleep Timer: Drift off peacefully to your favorite tunes with the countdown sleep timer. Set it, relax, and let the app automatically stop the music when the timer ends. + iOS & CarPlay Support: Take your harmonized music anywhere—on your iPhone or in your car. 852 Player Plus is designed to fit seamlessly into your lifestyle. + Full Playback Control: Enjoy complete control over your listening with Shuffle, Normal, Repeat One, and Repeat All playback modes. Unlock More Solfeggio Frequencies (In-App Purchase) Expand your sonic journey beyond 852 Hz! Gain access to additional Solfeggio frequencies to explore the profound power of sound and experience music like never before. Each frequency offers unique benefits for your mind, body, and spirit. Ready to awaken your intuition and transform your relationship with music? Download 852 Player Plus today and start your journey.
Screenshots
Verdict
The clearest difference is in-app purchases: APM Sweep at none against 852 Player Plus's 11. 852 Player Plus's advantage is update cadence (every 4 months vs every 10 months). On price, 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
Both are free to download. 852 Player Plus sells 11 one-off in-app purchases. APM Sweep asks for nothing beyond the download.
APM Sweep ships an update every 10 months, 852 Player Plus every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | APM Sweep | 852 Player Plus |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 35 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Lorenzo Rizzi | SYQEL INC |
In-app purchases
APM Sweep
No in-app purchases
852 Player Plus
- Unlimited 852 Hz retuning forever.$19.99
- Frequency - 174 Hz$19.99
- Frequency - 396 Hz$19.99
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- Frequency - 528 Hz$19.99
- Frequency - 417 Hz$19.99
- Frequency - 432 Hz$19.99
- Frequency - 285 Hz$19.99
- Frequency - 741 Hz$19.99
- Frequency - 963 Hz$19.99
- Frequency - 639 Hz$19.99
- Solfeggio Core Bundle$59.99









