iPad Screenshots


Seline Redux Synthesizer 3.0 is the revitalization and continuation of the Seline line. A feature rich synthesizer for hours of fun or making incredible tracks. MIDI and AudioBus 2 support included. Now with 3 keyboards, categorized sounds, and Dual Multi-FX controller.

"...Gorgeous, futuristic music making app... one of the most ambitious apps I've seen on the iPad, period." - Gizmodo

The Seline synth is a very powerful musical tool, for instant production of tons of first-class musical ideas. The melodies can now be recorded to .WAV/.M4A and MIDI simultaneously. Hardware, virtual, wireless MIDI in/out, as well as Audio Copy/Paste are fully supported. There are 14 bundled instruments, 3 drones, and 4 drum loops.

Seline is a great live performance and improvisation music instrument that will keep you playing for hours, even if you haven't touched any synth before. The sound is altered on the fly with a dozen of subtle AI algorhythms that add unbelievable expression, character and life to your music. Drones (chorded synth pads) are generated on-the-fly based on the complex analysis of your melody line and provide an excellent background layer for your melody.

***** Seline 1.0 was the iPad App of the week by Gizmodo & CultOfMac *****
***** Seline 1.0 has been featured by Apple as New & Noteworthy *****

・Seline Redux Swing for incredible runs
・Standard Piano for trained musicians
・Seline Ultimate Ergo for the classic users

Fully adjustable 16-note scale is divided into 2 parts (odd and even), which are then mapped top/bottom (Redux Swing) and on the left/right (Seline Ultimate Ergo). Such way of note mapping is beneficial to the existing linear scale mapping solutions as it allows many more improvisation possibilities. And, of course, the player is never out of tune.

Symbiosis of research, technology, and passion... Seline is the latest, most innovative and best-sounding music instrument for the iPad, aimed at easy creation of complicated, soulful, intricate melodies, backed with lush soundscapes. Record them all, and you'll never run out of musical ideas!


+ Advanced CrystalClarity HD sound engine
+ ioGrid 2.0 - ergonomically designed playing surface
+ 30 factory instruments, 6 drones, 8 drumloops
+ More than 1 GB of instruments are available for purchase
+ Easy note-to-note pitch bends and velocity/filter controls
+ Playing expressive, soulful melodies has never been so easy before
+ Automatic backing track - drones (chorded pads) generation
+ Support of playing drumloops for overdubbing or just having fun
+ Instant transposition controls, A/B setup switching
+ 4 FX: Grand Stereo Reverb, Dub Delay, Filter, Lush Chorus
+ MeloDist - Advanced "singing distortion" feature
+ 30 included scales + custom scale creation
+ Record to .WAV/.M4A/MIDI, overdub, file manager
+ Find your recorded files in iTunes / Apps / Seline Ultimate page
+ Full MIDI compatibility (Record to file/Hardware/Virtual)
+ Advanced File Manager
+ Audiobus2


* Brought to you by Amidio, the makers of Touch DJ Evolution, OMGuitar, & other music apps... *

What’s New

Version 3.2.3

Plays MIDI in background!

Ratings and Reviews

Thirdnail ,

Are you kidding?! Amazing (FREE) Virtual Instrument!

I keep thinking that I am going to open the app and a pop up message will state that I OWE money for the use of this amazing app! 😇

This is why Apple has been the leader in mobile technology, because of amazing programmers and Developers that make great tools in the form of apps!

This app delivers the goods. When you open the app you are brought to beautiful and easy to use interface. The first thing you notice is the unusual layout of the keys. (That is just the beginning) you play that first note and you KNOW that this is a professional tool, that could EASILY find a place in any song that you are recording in the studio!

I wish that they offered MORE FREE instruments (hey it's normal, to want MORE FREE!!)
But they are probably more generous than ANY other app on the market... I wish I knew the exact amount of "instruments" but the categories are full of amazing instruments and there are MANY CATEGORIES such as Bass, keys, lead, winds, strings, synths...ect.

You can record, playback, and there is also built in beats (which you get a nice array of for free) and many that are offered in the App Store! (But honestly there are so many that are free that you can spend countless hours before ever making a purchase, if you ever do!)

Hydra vein ,

Amazing synth.

This synth sounds really good. I especially like the flute expansion pack. I've got several of the expansion packs, and they all bring some great sounds.

Definitely one of my favorite synths.

Morphonios ,

Great synth for creating leads, grooves, etc.

Really enjoying the many ways to create new music! Love the flute and it's great vibrato!


zCage.com Apps LLC
150 MB
Requires iOS 8.0 or later. Compatible with iPad.
Age Rating
Rated 4+
© zCage.com Apps LLC 2015
In-App Purchases
  1. Cello+ Mix $0.99
  2. Majestic Flutes $0.99
  3. Flutes+ Mix $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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