Comparison

APM Sweep vs 852 Player Plus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

852 Player Plus

Features
Read full description

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

APM Sweep4 screens
852 Player Plus4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 852 Player Plus sells 11 one-off in-app purchases. APM Sweep asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
APM Sweep versus 852 Player Plus: the parameters behind the verdict, then further details
ParameterAPM Sweep852 Player Plus
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 10 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size35 MB79 MB
Age rating4+4+
DeveloperLorenzo RizziSYQEL INC

In-app purchases

None

APM Sweep

No in-app purchases

11 purchases

852 Player Plus

One-time11
  • Unlimited 852 Hz retuning forever.$19.99
  • Frequency - 174 Hz$19.99
  • Frequency - 396 Hz$19.99
Show 8 more
  • 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

Questions

Is APM Sweep free?
APM Sweep is free to download, with no in-app purchases.
Is 852 Player Plus free?
852 Player Plus is free to download, with in-app purchases available.
Do APM Sweep or 852 Player Plus have ads?
Neither APM Sweep nor 852 Player Plus shows ads.
Which is updated more often, APM Sweep or 852 Player Plus?
APM Sweep ships an update every 10 months, and 852 Player Plus every 4 months. Most recently, APM Sweep was updated on November 3, 2026 and 852 Player Plus on October 30, 2026.

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