Comparison

Stemz vs Loop Manager

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

Head to head
About

Stemz

Edit, remix, and manipulate audio tracks with powerful tools. Isolate vocals or instruments, change tempo, and create mashups. Ideal for musicians, DJs, and music lovers seeking creative audio control.

Highlights
  • Vocal remover
  • Instrument isolation
  • Music speed changer
  • Advanced audio editor
  • Stem creation
  • Mashup creator
Features
Read full description

Unleash your musical creativity with Stemz! Edit, remix, and explore your favorite tracks like never before. Dive into the world of audio manipulation and discover endless possibilities. Stemz offers powerful tools in a user-friendly interface. Perfect for musicians, DJs, and music enthusiasts of all levels. Why You'll Love It: • Vocal Remover: Isolate vocals for karaoke, practice, or sampling. • Instrument Isolation: Mute specific instruments like drums, bass, or guitar to create your own backing tracks. • Music Speed Changer: Adjust tempo without affecting pitch. • Advanced Audio Editor: Cut, merge, and modify tracks with precision. • Music Lab: Experiment with sounds and effects. • Stem Creation: Break down songs into individual components. • Mashup: Create amazing mashups from two songs with just one click! Ready to transform your audio experience? Download Stemz now and start creating! Privacy Policy & Terms of Service: https://musicworldmedia.com/products/stemz/tos

About

Loop Manager

This app helps guitarists manage audio files on their looper pedals. It converts various audio formats to WAV, allowing for adjustments to volume, tempo, and length, and facilitates file organization directly on the pedal.

Highlights
  • Audio file conversion (WAV, MP3 to WAV)
  • Volume, tempo, and trim adjustments
  • File renaming and organization
  • Backup and restore pedal content
  • Configurable pedal settings
  • Supports iPhone and iPad
Features
Read full description

Loop Manager is an iOS app designed to facilitate the management of audio files on a guitar looper pedal. The app will convert most common audio formats (i.e. wav, mp3) to a wav audio file of the selected bit depth (16 bit, 24 bit, 32 bit, or 32 bit float) and save these into preset folders on the pedal. Additional features include moving/copying files from one preset position to another, renaming of files, volume adjustment, tempo adjustment, audio trimming, and audio duplication. The app is specifically designed and tested with the NUX Looper Pedals (Loop Core Stereo, Loop Core Deluxe and JTC Drum & Loop). However, the app could also work with other loop pedals that have audio files stored in similar patterned folders and of WAV audio format. The app configuration settings (target folder name, pattern, number of presets, and bit depth) are configurable and allow for matching the target pedal's configuration. Specific features include: - App is designed for both iPhone and iPad - Audio file selection via folder app selection or drag and drop - File conversion of most common audio formats (i.e. wav, mp3) to WAV format of either 16 bit, 24 bit, 32 bit, or 32 bit float - Configurable and saved settings for the target folder name, the folder pattern, the number of presets, and the bit depth - Once audio files are converted and assigned to a preset, ability to move/copy files from one preset to another - Audio files can be renamed, becoming the preset name - Volume of audio files can be adjusted and re-saved with new volume level selected (with live sampling). The default volume adjustment can be saved, allowing for a consistent volume conversion. - Tempo of audio files can be adjusted and re-saved with new selected tempo (with live sampling) - Audio files can be trimmed at specific start and end markers and re-saved (with live sampling) - Audio files can be duplicated (to lengthen audio files) by selecting a number of repeats from 1 to 8 - Audio files can be deleted (removed from pedal) - Audio files can be shared individually (export audio) - Entire pedal content can be backed up to a selected folder on the iPad or iPhone - Previously backed up pedal content can be restored either as a partial restore (only affect contents of backup) or full restore (removing what is on the pedal prior to restore from backup) - Entire pedal content can be cleared (to remove all audio content on the pedal) IMPORTANT: This app works with the NUX Loop Pedal (and potentially other loop pedals) with no guarantee of compatibility with future firmware releases. DISCLAIMER: By using Loop Manager (the "Software"), you acknowledge and agree that the Software is provided on an "as is" basis, without any warranties or guarantees of any kind, whether expressed or implied. You assume all responsibility and risk for the use of this Software. You agree that you shall not hold the developer liable for any damages, losses, or liabilities, including but not limited to direct, indirect, incidental, special, consequential, or punitive damages, arising out of or in connection with the use of the Software.

Screenshots

Stemz4 screens
Loop Manager4 screens

Verdict

The call

The clearest difference is price: Stemz at Free against Loop Manager's $9.99. Stemz also leads on update cadence (every 6 days vs every 12 months) and chart position (#71 vs unranked). Loop Manager's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 14). On 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

Stemz is free to download; Loop Manager costs $9.99 up front. Stemz sells 13 in-app purchases, starting at $1.99 per 7 days. Loop Manager asks for nothing beyond the download.

UpkeepUpdate frequency

Stemz ships an update every 6 days, Loop Manager every 12 months. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard7 real differences · 4 level
Stemz versus Loop Manager: the parameters behind the verdict, then further details
ParameterStemzLoop Manager
PriceFree — better$9.99
Rating4.7 (16K ratings) — better—
Positive reviews59.6% of reviews100.0% of reviews — better
Number of ratings16K — better—
Update frequencyEvery 6 days — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#71 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size337 MB1 MB
Age rating4+4+
DeveloperMWMStephane Villeneuve

Customer experience

Stemz

All ratings15,671 ratings
Positive91.5%
Neutral2.2%
Negative6.3%
Written reviews646 reviews
Positive59.6%
Neutral6.0%
Negative34.4%

Loop Manager

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Stemz

Reported bugs

4 issues
  • Songs not playing after subscription
  • Unable to import songs from iTunes
  • Frequent crashes and freezes
  • Playback issues with edited songs

Requested features

4 requests
  • Increase free song limit
  • Improve audio separation quality
  • Add support for more music sources
  • Provide one-time purchase option

Loop Manager

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Stemz

Subscriptions12
  • Stemz Pro - Weekly7 Days trial$1.997 Days
  • Stemz Pro - Monthly7 Days trial$4.991 Month
  • Premium Pass$5.991 Month
Show 9 more
  • Stemz Pro - Weekly3 Days trial$7.997 Days
  • Stemz Plus Monthly Plan$7.991 Month
  • Stemz Pro Weekly7 Days trial$9.997 Days
  • Stemz Pro Weekly3 Days trial$9.997 Days
  • Stemz Pro - Monthly7 Days trial$9.991 Month
  • Stemz Max Monthly Plan3 Days trial$9.991 Month
  • Stemz Pro - Yearly$39.991 Year
  • Premium1 Month trial$69.991 Year
  • Stemz Max Yearly Plan7 Days trial$79.991 Year
One-time1
  • Unlock 1 track$1.99
None

Loop Manager

No in-app purchases

Questions

Is Stemz free?
Stemz is free to download, with in-app purchases available.
Is Loop Manager free?
Loop Manager costs $9.99, with no in-app purchases.
Do Stemz or Loop Manager have ads?
Stemz shows ads; Loop Manager does not.
Which is updated more often, Stemz or Loop Manager?
Stemz ships an update every 6 days, and Loop Manager every 12 months. Most recently, Stemz was updated on October 20, 2026 and Loop Manager on October 15, 2026.

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