Amazing Slow Downer

Amazing Slow Downer

By Roni Music

  • Category: Music
  • Release Date: 2009-03-27
  • Current Version: 6.1.5
  • Adult Rating: 4+
  • File Size: 6.99 MB
  • Developer: Roni Music
  • Compatibility: Requires iOS 9.0 or later.
Score: 4.5
From 496 Ratings


If you're a musician who likes to learn new songs and techniques by listening to the same piece of music over and over but wish that the music could be played a little slower, then you'll enjoy Amazing Slow Downer. You can repeat any section of the music at full speed, slow it down or even speed it up by changing the speed between 25% (1/4 of original speed) and 200% (double speed) without changing the pitch! Change the tuning or musical key? No problem, Amazing Slow Downer handles that as well. Setup seamless loops by touching the "Set" buttons during playback. Amazing Slow Downer is the ideal tool for any musician, transcriber or dancer wanting to improve their skills. Important notes: Cannot play DRM protected files from the iTunes store (m4p and audio book files).



  • More than worth the price!

    By JKL718
    More than worth the price! Truly a game changer! I tried cheaper options and their interface looked more interesting, but those looks were deceiving. Those others were difficult to effectively manage and really buggy. ASD proved to be “amazingly” intuitive, easy to organize what you’re learning, and completely bug free. You do have to “own” your iTunes music that is imported, and they have to be downloaded to your device—Apple won’t let you work in other programs with their music otherwise. I do pay for Apple Music, so I have to individually purchase those pieces I decide to accompany on my banjo. But that is a very small added cost for the time ASD saves when learning the song. Besides having quick and easy control of pitch and speed, the setting of focused sections of songs is very easy—I was setting focused loops on the fly the first night of practice using ASD. Each loop only took seconds to create and are automatically organized under a disc looking icon linked to the song. Having the loops organized with each song like that is one of the many details that make using ASD intuitive and effective. I do not typically leave reviews—less than a half dozen made in my lifetime across all platforms—so this review is a sign of how impressive and helpful this app truly is. Thanks for this great product!
  • It truly is Amazing!

    By afarmerguitar
    I think this is the first review I have ever written. Normally I wouldn’t go out of my way, but this app has truly revolutionized the way I teach and practice. Everyone who plays an instrument needs this app! Also, a couple of days ago, I was having trouble with the app, which was probably due to Spotifys servers being down. I emailed the company and got a quick response and shortly the problem was fixed. It was at that moment, I realized how much I depend on this app! Worth everything you pay and more!
  • Should’ve brought earlier

    By Jkels1
    I brought to listen to my music like the do in Texas, slowed and screwed. Pitch and tempo match made in heaven
  • “Failed to collect songs”

    By Size Matters
    Hit or miss with Spotify connection. Cool app, but unreliable functionality is unacceptable especially when using it for teaching purposes.
  • Great for Irish trad music!

    By emeraldcitystar
    Why did I not buy this app years ago... perfect for slowing down fast session recordings to get those five pesky notes you can't un-jumble at speed. Highly recommend!
  • Perfect

    By buhlacious
    RONI is amazing. Responds quickly. Great customer service. Great app. Thanks!!! This is so beneficial. Thanks for taking shed time to build the features.
  • GREAT app!

    By Unca Bo
    The most indispensable app I have! I use it for learning tricky passages, finding which key is comfortable to sing in, and for practicing licks in different keys. I tell everybody about it! And it goes with me from device to device without any problems.
  • Was once great

    By GJStergios
    But has been so buggy the past couple of weeks that I will have to try an alternate product. Jams constantly.
  • Great app for singing practice

    By I should be anonymous
    I'm a classical singer who has been relying upon this wonderful app for years. If I have a recording of a song's accompaniment, the app can transpose it so I can try it in different keys, or I can slow down passages to work on them (and set it up to repeat that section over and over again while I practice it). It is very reliable, doesn't take long to download and update, and I have nothing but admiration for the developer.
  • Great but overpriced

    By bodhisattva87
    Great app. If I'm transcribing a song or want to practice a specific section, I like that I can make a short piece of the song loop. I'm not happy with how much I paid for it though. I didn't look terribly hard but I was surprised that I couldn't find a cheaper alternative.