Comparison

LouderLogic for iPhone vs 528 Player Plus

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

Head to head
About

LouderLogic for iPhone

Enhance your music listening with advanced audio playback. This app offers professional sound improvements, customizable equalizers, and dynamic queue management for a richer audio experience from your library.

Highlights
  • Patented ALX audio enhancement
  • 4-band parametric EQ with Spectrum Animation
  • Dynamic interactive Play Queues
  • Crossfading between songs
  • Volume fluctuation minimization
  • Maximizes musical details
Features
Read full description

Looking for the best listening experience for your iTunes Library? Look no further than LouderLogic – the Advanced Audio Player. LouderLogic features include: - Professional audio enhancement with patented ALX technology - 4-band parametric EQ with Spectrum Animation - Dynamic interactive Play Queues - Crossfading LouderLogic brings the fullness you crave out of every song, using patented Audio Level eXtension (ALX) technology by McDSP. LouderLogic minimizes volume fluctuations between songs while maximizing all the musical details the artist intended you to enjoy. Simply put, you’ll get more from your music! With the McDSP 4-band parametric equalizer, you get the highest quality interactive EQ for your iOS device, along with the ability to customize and tweak to your heart's content. Easily drag the curves to control boost and cut, and use two fingers to adjust the Q (bandwidth).  Spectrum Animation shows you what your music 'looks like' so you can EQ like a pro. Play Queues let you modify what's coming up next at any time, without interrupting your current track. Adjust the crossfade time between songs from 1 to 30 seconds. “If you don’t have LouderLogic I don’t know why you’re even listening to music.” – Chaka Blackmon, Producer/Songwriter for Christina Aguilera, CeCe Winans, MTV and Disney. “LouderLogic is perhaps the most impressive audio enhancement app I have used.” – Kit Eaton, New York Times. Please note that while LouderLogic does play back DRM protected music, it cannot apply ALX enhancement to DRM protected audio. ALX enhancements cannot be applied to music that is still "in the cloud" in iTunes Match, but can be applied once downloaded to your device. Requires iOS 8.0+

About

528 Player Plus

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
Read full description

What if your favorite music could sound and feel different — not by changing what you hear, but by shifting the frequency beneath it? 528 Player Plus retunes any song from your library to 528 Hz — the Solfeggio frequency associated with harmony, restoration, and the natural resonance of living systems — in real time, as it plays. No exports. No waiting. No audio files to manage. Just press play. HOW IT WORKS Most modern music is mastered at 440 Hz, the global standard tuning. 528 Player Plus shifts the playback frequency of your existing music library to 528 Hz on the fly — so every song you already love plays at this resonant frequency without altering your original files. WHAT YOU GET Real-time 528 Hz retuning of your full music library Clean, distraction-free player interface No subscriptions — pay once, own it forever Try free: retune up to 20 songs before unlocking $19.99 one-time unlock — no recurring charges, ever Works with your existing owned music files WHO IT'S FOR → Sound healers and frequency practitioners → Meditators and breathwork enthusiasts → Anyone curious about Solfeggio frequencies → Musicians exploring alternate tuning systems → People who want their music to feel different — not just sound different WHY 528 Hz? 528 Hz sits within the ancient Solfeggio scale — a set of tones used in sacred music across cultures for centuries. Modern researchers and sound practitioners have associated this frequency with feelings of clarity, calm, and coherence. Whether you approach it scientifically or intuitively, the experience speaks for itself. Try it with music you already know by heart. You may be surprised. FREE TO TRY. YOURS TO KEEP. Retune your first 20 songs completely free. When you're ready, a single $19.99 purchase unlocks unlimited listening — forever. No subscription. No renewal. No fine print.

Screenshots

LouderLogic for iPhone4 screens
528 Player Plus4 screens

Verdict

The call

The clearest difference is review sentiment: LouderLogic for iPhone at 65% against 528 Player Plus's 0%. LouderLogic for iPhone also leads on rating (4.2 vs 1.0) and in-app purchases (none vs 11). 528 Player Plus's advantage is price (Free vs $1.99). On ads and device support 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

528 Player Plus is free to download; LouderLogic for iPhone costs $1.99 up front. 528 Player Plus sells 11 one-off in-app purchases. LouderLogic for iPhone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LouderLogic for iPhone holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: LouderLogic for iPhone has 36 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 65% of LouderLogic for iPhone's written reviews are positive against 0% of 528 Player Plus's.

UpkeepUpdate frequency

LouderLogic for iPhone ships an update monthly, 528 Player Plus every 2 months. Both last shipped on October 12, 2026.

Scorecard8 real differences · 2 level
LouderLogic for iPhone versus 528 Player Plus: the parameters behind the verdict, then further details
ParameterLouderLogic for iPhone528 Player Plus
Price$1.99Free — better
Rating4.2 (36 ratings) — better1.0 (2 ratings)
Positive reviews64.5% of reviews — better0.0% of reviews
Number of ratings36 — better2
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.6
Further details — not scored
Size13 MB79 MB
Age rating4+4+
DeveloperMcDSPSYQEL INC

Customer experience

LouderLogic for iPhone

All ratings36 ratings
Positive80.6%
Neutral2.8%
Negative16.7%
Written reviews93 reviews
Positive64.5%
Neutral14.0%
Negative21.5%

528 Player Plus

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

LouderLogic for iPhone

Reported bugs

28 issues
  • Crashes on newer iOS versions (15.3.1, iOS 10, iOS 6)
  • Songs crash or skip randomly
  • App stops working after a few songs
  • Library takes a long time to load
  • App crashes when turning to use EQ
Show 23 more
  • Music playback is 'chuggy' or buffers
  • App doesn't play certain songs (DLC)
  • Album artwork is mixed up or missing
  • Presets not showing up
  • App doesn't support over iOS 8
  • No multitasking
  • No spectrum bars
  • No access to presets
  • Start/stop points in iTunes not recognized
  • App freezes
  • Support doesn't respond
  • Doesn't fit iPhone 6+ screen
  • Won't play 24bit wave files
  • Takes a long time to load library
  • Doesn't play half the songs
  • Crossfading doesn't work
  • Songs repeat or start halfway
  • Music cuts in and out on iOS 6
  • DRM protection issues with ripped CDs
  • App quits in middle of biking
  • Volume boost is not significant
  • No sound output
  • App thinks ripped music is DRM-protected

Requested features

16 requests
  • Integration with Apple Music/streaming apps
  • DSP effects for all songs
  • Work with Apple Music
  • Save files for other devices
  • Adjustable font size
Show 11 more
  • Search function
  • Update play counts in iTunes
  • Ability to store multiple EQ curves
  • Dark mode option
  • Graphic EQ option
  • Shuffle button in playlists
  • Real-time shuffle
  • EQ presets
  • Spotlight search
  • Full screen support for newer iPhones
  • Gapless playback

528 Player Plus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LouderLogic for iPhone

No in-app purchases

11 purchases

528 Player Plus

One-time11
  • Unlimited 528 Hz retuning forever.$19.99
  • Frequency - 963 Hz$19.99
  • Frequency - 285 Hz$19.99
Show 8 more
  • Frequency - 432 Hz$19.99
  • Frequency - 396 Hz$19.99
  • Frequency - 741 Hz$19.99
  • Frequency - 174 Hz$19.99
  • Frequency - 417 Hz$19.99
  • Frequency - 639 Hz$19.99
  • Solfeggio Core Bundle$59.99
  • All Frequencies$99.99

Questions

Is LouderLogic for iPhone free?
LouderLogic for iPhone costs $1.99, 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, LouderLogic for iPhone or 528 Player Plus?
LouderLogic for iPhone is rated higher. LouderLogic for iPhone averages 4.2 out of 5 from 36 ratings, while 528 Player Plus averages 1.0 from 2 ratings.
Do LouderLogic for iPhone or 528 Player Plus have ads?
Neither LouderLogic for iPhone nor 528 Player Plus shows ads.
Which is updated more often, LouderLogic for iPhone or 528 Player Plus?
LouderLogic for iPhone ships an update monthly, and 528 Player Plus every 2 months. Most recently, LouderLogic for iPhone was updated on October 12, 2026 and 528 Player Plus on October 12, 2026.

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