Comparison

Equalizer Pro + vs Flat Equalizer

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

Head to head
About

Equalizer Pro +

Enhance your audio experience with a professional equalizer and a full-featured music player. Enjoy high-quality sound, customizable EQ curves, and support for various audio formats. Manage your music library and personalize playback with advanced features.

Highlights
  • High-performance equalizer with 32-bit float processing
  • Customizable EQ curves with unlimited points
  • Full-featured MP3, FLAC, OGG, WAV, APE player
  • Play from iPod Library and transfer via iTunes/WiFi
  • Supports lock screen controls, multitasking, and CarPlay
  • 12 built-in and unlimited user EQ presets
  • ID3 lyrics and album art support
Features
Read full description

Professional Equalizer + Full featured MP3/OGG/FLAC Player HIGH PERFORMANCE EQUALIZER - Highly optimized equalizing algorithm. Uses much less battery than other EQ apps with comparable algorithm. - High quality equalization without distortion. Uses 32-bit float processing. - Draw EQ curves without limitation of number of points. - Realtime spectrum output FULL FEATURED PLAYER - Play directly from iPod Library. - MP3/FLAC/OGG/WAV/APE file support - lock screen album art & meta-data support - mulitasking - remote control support - Customizable gestures - Multiple playlists - scrubbing, repeat, shuffle - Support ID3 lyrics (LRC and SYLT word-level lyrics), album art. - Transfer songs between PC/MAC using iTunes files sharing - Transfer songs using WiFi - supports CarPlay - supports Dark Appearance EQ PRESETS - 12 built-in EQ Presets - Unlimited user EQ Presets. - You can set EQ preset for individual track. (EQ preset for song is automatically loaded when played) * DRM protected tracks are not supported.

About

Flat Equalizer

Enhance your audio with a professional music equalizer and powerful volume booster. Fine-tune tracks with custom presets or create your own settings. Experience immersive sound with advanced features for wired and wireless headphones.

Highlights
  • 10-band music equalizer
  • Headphone volume booster
  • Customizable EQ presets
  • Extra Boost feature
  • Bluetooth equalizer support
  • Save custom EQ settings
Features
Read full description

Unlock the true potential of your audio with Flat Equalizer, the ultimate sound tool for your device. Fine-tune your tracks with our professional-grade music equalizer and experience a powerful headphone volume booster that brings every beat to life. Our app works seamlessly as a headphone equalizer and supports wireless connections with our equalizer bluetooth technology. Whether you need an audio booster for clarity or a robust sound booster for impact, our app delivers unparalleled control. Transform your listening experience with Headphone Equalizer, the all-in-one audio booster and sound enhancement suite. Dive deep into your music library and take full control with our advanced 10-band equalizer, a perfect tool as a dedicated headphone booster. Our powerful music equalizer comes with built-in presets like Rock and Full Bass, or you can create and save your own custom settings for any genre, making it the ultimate tool for audiophiles. Not just an equalizer, this app is also a formidable headphone volume booster. Feel the energy with our "Extra Boost" feature, a powerful sound booster that elevates your music to new heights without distortion. This incredible headphone booster makes every song more immersive, especially when using our advanced headphone equalizer. The powerful combination ensures crystal-clear audio even over wireless connections, making it the best equalizer bluetooth on the market. Take your audio from flat to fantastic with the ultimate enhancement tool. Download Headphone Equalizer now and hear the difference!

Screenshots

Equalizer Pro +4 screens
Flat Equalizer4 screens

Verdict

The call

The clearest difference is review sentiment: Flat Equalizer at 95% against Equalizer Pro +'s 46%. Flat Equalizer also leads on price (Free vs $4.99) and rating (4.9 vs 4.2). Equalizer Pro +'s advantage is in-app purchases (none vs 4) and ratings volume (558 vs 19). On update cadence, 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

Flat Equalizer is free to download; Equalizer Pro + costs $4.99 up front. Flat Equalizer sells 4 in-app purchases, starting at $2.99 per 7 days. Equalizer Pro + asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flat Equalizer holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Equalizer Pro + has 558 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 46% of Equalizer Pro +'s written reviews are positive against 95% of Flat Equalizer's.

UpkeepUpdate frequency

Equalizer Pro + ships an update every 2 weeks, Flat Equalizer fortnightly. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
Equalizer Pro + versus Flat Equalizer: the parameters behind the verdict, then further details
ParameterEqualizer Pro +Flat Equalizer
Price$4.99Free — better
Rating4.2 (558 ratings)4.9 (19 ratings) — better
Positive reviews46.5% of reviews94.6% of reviews — better
Number of ratings558 — better19
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size25 MB11 MB
Age rating4+4+
DeveloperTachyon Factory Inc.Md Milon Hossain

Customer experience

Equalizer Pro +

All ratings558 ratings
Positive80.6%
Neutral4.5%
Negative14.9%
Written reviews142 reviews
Positive46.5%
Neutral8.5%
Negative45.1%

Flat Equalizer

Written reviews37 reviews
Positive94.6%
Neutral0.0%
Negative5.4%

User reviews

Equalizer Pro +

From 558 App Store ratings

What we love

  • 🚀 Great app
  • 👍 Excellent equalizer
  • 👍 Powerful EQ
  • 👍 Customizable
  • 👍 Robust features

Room to improve

  • 🐛 Compatibility issues with streaming services
  • 🐛 Playback problems
  • 🐛 Crashes and stability concerns
  • 🐛 Limited functionality
  • 🐛 Restricted access to music library

Flat Equalizer

From 19 App Store ratings

What we love

  • 🔊 Loud and Crystal Clear
  • 💎 Crystal Clear Sound
  • 🎨 Perfect Sound Customizer
  • 🎯 Love the Presets
  • 🌟 Highly Recommended

Bugs and requests

Equalizer Pro +

Reported bugs

5 issues
  • Inability to play songs from iTunes library
  • Issues with CarPlay integration
  • Inconsistent behavior with iOS updates
  • Syncing problems with playlists and album art
  • Frequent crashes and freezes

Requested features

6 requests
  • Expand support for streaming services
  • Improve playlist management
  • Add more preset EQ options
  • Enhance visualizer and UI customization
  • Optimize performance for older devices
Show 1 more
  • Provide better guidance and tutorials

Flat Equalizer

No bugs or feature requests surfaced in reviews.

In-app purchases

None

Equalizer Pro +

No in-app purchases

4 purchases

Flat Equalizer

Subscriptions2
  • Weekly3 Days trial$2.997 Days
  • Yearly3 Days trial$99.001 Year
One-time2
  • Lifetime$9.99
  • Lifetime$29.99

Questions

Is Equalizer Pro + free?
Equalizer Pro + costs $4.99, with no in-app purchases.
Is Flat Equalizer free?
Flat Equalizer is free to download, with in-app purchases available.
Which has better reviews, Equalizer Pro + or Flat Equalizer?
Flat Equalizer is rated higher. Equalizer Pro + averages 4.2 out of 5 from 558 ratings, while Flat Equalizer averages 4.9 from 19 ratings.
Do Equalizer Pro + or Flat Equalizer have ads?
Neither Equalizer Pro + nor Flat Equalizer shows ads.
Which is updated more often, Equalizer Pro + or Flat Equalizer?
Equalizer Pro + ships an update every 2 weeks, and Flat Equalizer fortnightly. Most recently, Equalizer Pro + was updated on November 11, 2026 and Flat Equalizer on October 30, 2026.

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