Comparison

Volume Booster・Bass Equalizer vs Partbook

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

Head to head
About

Volume Booster・Bass Equalizer

Enhance your audio experience with powerful bass and volume boosting capabilities. Fine-tune your sound with an equalizer and enjoy immersive virtual surround effects. Supports all audio sources and allows for offline playback.

Highlights
  • Powerful bass and volume boost up to 1000%
  • Equalizer with over 20 presets
  • Virtual surround sound effect
  • Works with all audio sources
  • Import audio from cloud services
  • Create playlists and offline mode
  • Full-featured playback controls
Read full description

Ultimate Bass & Volume Booster Turn your iPhone or iPad into the ultimate audio enhancement tool — more than just a volume amplifier! Boost your music and podcasts with style, precision, and full control — whether you’re at home, commuting, or anywhere else! --- Key Features: ► Works with all audio sources — Supports music from your library, streaming services, downloaded audio, and more. Just import or stream and get louder, richer sound instantly. ► Powerful bass and volume boost — Amplify low frequencies and overall loudness up to 1000%. Enjoy deeper bass and clearer sound even at high gain. ► Equalizer with presets — Fine‑tune your sound with precision or choose from over 20 presets like Pop, Rock, Jazz, Hip‑Hop, and more. ► Virtual surround effect — Create immersive audio with surround sound & stereo enhancements built‑in. ► Import audio seamlessly — Access files from iTunes, iCloud Drive, Dropbox, Google Drive, OneDrive, Wi‑Fi transfers and more. ► Create playlists & offline mode — Organize your favorite tracks into playlists and enjoy them offline — no internet required. ► Full-featured playback — Includes play/pause, skip, shuffle, sleep timer, and AirPlay support — everything you need for smooth listening. ► Safe and responsible — Be cautious with volume levels to protect hearing and devices. We’re not responsible for damages — user discretion advised. --- How to Use: 1. Import your audio or stream from your preferred source. 2. Adjust your bass, volume, and equalizer to your taste. 3. Play your track — enjoy louder, richer sound instantly! Download now and experience audio like never before — your ears will thank you! Questions? Feedback? Reach us by email at apple@auxilin.com. Privacy Policy: https://auxilin.com/privacy Terms of Use: https://auxilin.com/terms

About

Partbook

Features
Read full description

Sing your part. Partbook is where your choir's practice tracks live. Your leader uploads a recording per voice; Partbook renders the mixes, times the lyrics, and puts the result in your pocket. HEAR YOUR PART UP FRONT One voice per part. Pull yours forward, or listen from inside the altos for a while. Every part has its own ready-made mix, and the map is there when you want to build your own. LOOP THE CHORUS UNTIL IT STICKS Lyrics follow the recording line by line. Tap a section to jump, loop the chorus, stay on the hard bar as long as it takes. ONE SHELF New tracks appear for everyone at once, in order, with the notes that belong to them. Voice notes from your leader sit under the song they explain. PLAYED ONCE, DOWNLOADED The songs travel with you. Rehearse on the train, in the car, in the summer house with no signal. THE SCORE FOLLOWS THE SONG Add a MusicXML score and it follows the recording, bar by bar. Your part alone, or every voice on one ribbon. Early access. Partbook is invite-only: you join through a link from your choir. Lead a choir? Write us!

Screenshots

Volume Booster・Bass Equalizer4 screens
Partbook4 screens

Verdict

The call

The clearest difference is in-app purchases: Partbook at none against Volume Booster・Bass Equalizer's 5. On price, 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

Both are free to download. Volume Booster・Bass Equalizer sells 5 in-app purchases, starting at $5.99 per 7 days. Partbook asks for nothing beyond the download.

UpkeepUpdate frequency

Volume Booster・Bass Equalizer ships an update weekly, Partbook every 8 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
Volume Booster・Bass Equalizer versus Partbook: the parameters behind the verdict, then further details
ParameterVolume Booster・Bass EqualizerPartbook
PriceFreeFree
Rating4.4 (72 ratings) — better—
Positive reviews46.2% of reviews—
Number of ratings72 — better—
Update frequencyWeekly — betterEvery 8 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.4 — better
Further details — not scored
Size48 MB52 MB
Age rating4+9+
DeveloperAuxilin LLCAmbroos Vaes

In-app purchases

5 purchases

Volume Booster・Bass Equalizer

Subscriptions3
  • Weekly Premium3 Days trial$5.997 Days
  • Yearly Offer$17.991 Year
  • Yearly Premium$34.991 Year
One-time2
  • Lifetime FreeFree
  • lifetime offer$29.99
None

Partbook

No in-app purchases

Questions

Is Volume Booster・Bass Equalizer free?
Volume Booster・Bass Equalizer is free to download, with in-app purchases available.
Is Partbook free?
Partbook is free to download, with no in-app purchases.
Do Volume Booster・Bass Equalizer or Partbook have ads?
Neither Volume Booster・Bass Equalizer nor Partbook shows ads.
Which is updated more often, Volume Booster・Bass Equalizer or Partbook?
Volume Booster・Bass Equalizer ships an update weekly, and Partbook every 8 days. Most recently, Volume Booster・Bass Equalizer was updated on October 30, 2026 and Partbook on October 24, 2026.

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