ThumbJam is a powerful musical performance experience. You get over 40 high-quality real instruments multi-sampled exclusively for this app. Hundreds of included scales allow you to effortlessly play in any style from rock to classical, whether you are a musical novice or a seasoned professional.

Jordan Rudess, the world-renowned keyboardist for Dream Theater says:

"ThumbJam stands at the very top of the overcrowded music app world. The sounds included absolutely rival those found in pro instruments and making music on the app is a total joy. The only problem I have with this app is that I did not make it myself! Luckily, I'm able to work with the developer and offer a few good feature ideas as well as some choice sounds from my personal collection!"

Even if you've only played air guitar, ThumbJam lets you sound like a pro. Pick an instrument and jam -- with all the scales to choose from you'll never hit a wrong note. The high quality instrument samples will make you sound like you just skipped years of music lessons.

For the performing musician, this app is awesome for soloing on an instrument you didn't bring along. Play in any key, any style -- go from a string ensemble to a wailing guitar. ThumbJam was developed and tested by musicians to feel and sound like a real instrument. You'll be surprised at how expressive it can be, make sure to check out the videos and audio at

ThumbJam makes use of tilt and shake to add vibrato, tremolo, note bends, and volume swells for more realistic and expressive results. It supports up to five (eleven on iPad) simultaneous touches and up to 32 voice polyphony, for each of up to 8 loaded instruments! Delay and stereo reverb add depth to the sound, and a resonant lowpass filter gives you more tone shaping power. Put on your headphones or plug in to your home stereo to experience some of the highest quality instruments in the App Store.

Build your own loops from the ground up or import your favorites and jam from there. Layer as many loops as you want, with different instruments for each. Export your loops as audio files or Ardour DAW sessions via WiFi. Copy and paste audio from other apps using AudioCopy/Paste as well the general pasteboard, via email, AudioShare, iTunes Document Sharing, or open directly in another application. Supports Audiobus and Inter-App-Audio for streaming sound to/from other apps in real-time, including state save/restore with Audiobus2.

Extensive MIDI input and output support over WiFi or Bluetooth, with any CoreMidi compatible device, or other apps on the same iOS device with virtual MIDI. Now also supports Ableton Link for tight sync between apps on the same network.

New powerful arpeggiator feature lets you play patterns with perfect time sync, from the screen or via MIDI control.

The app includes a huge variety of scales, from western to eastern. Save your favorites for quick access, or create your own in-app. You can even import new scales in the Scala format for complete flexibility.

You can also record your own multi-sampled instruments using a built-in or attached microphone, or from file import.

Included instruments:

+ Cello, Violin, Viola
+ Upright Bass (plucked and bowed)
+ Several drumkits
+ Darabukka
+ Djembe
+ Electric Guitar
+ Electric Bass
+ Trumpet
+ Trombone
+ Tenor Sax
+ Flute
+ Low Whistle
+ Acoustic Guitar
+ Hammered Dulcimer
+ Mandolin
+ Cittern
+ Grand Piano
+ Drawbar Organ (2 types)
+ Rhodes
+ Pipe Organ
+ Synth Strings
+ Synth Choir
+ Theremin
+ Sawtooth Waveform
+ Sine Waveform
+ Triangle Waveform
And from Jordan Rudess:
+ JR Zendrix
+ JR Smooth Steel

Many more for immediate FREE download in the app including several drumkits, Mellotron, basses, banjo, tabla, ukelele, guitars and more! New instruments posted regularly.

What's New

Version 2.6

- Added Audiobus 3 support, including MIDI Filter for Scale Lock, and with individual MIDI receive/senders (per instrument slot)
- Added CC bindings for Delete Last Loop (CC 76), and Delete All Loops (CC 77)
- Added support for iPhone X, because why not

- Fixed possible crash on opening create instrument
- Preserve manual setting of live audio monitor setting when connected in an Audiobus output slot
- Make audio input monitoring button work the first time
- Fixed midi sysex handling bug causing potential crashes
- Fixed continuum mode midi output

Customer Reviews

4.7 out of 5

43 Ratings

43 Ratings

Stunned, Shocked, Amazed and Mad that this wasn't the 1st app I bought!


Okay... if this is on your wish list, or if you are just window shopping for an app that you can REALISTICALLY use in EVERY project, please trust me, don't waste a dime on another app.

I have easily dropped over a thousand dollars on Daws, Synths, Effects, and Modelers. I will tell you now, this is by far the best app I have EVER downloaded. (Meaning, it has by far, out valued, out preformed anything on the AppStore for less than $9)

I am 100% sold on this dev... man if this guy made cars it would be like getting a Ferrari and only paying for a bicycle. Amazing...thank you Sonosaurus.

a long-time favorite


(v.2.5.2) the innovations keep on coming! fellow ipeople, if you like creating melodies or harmonies...or if you enjoy learning about music theory, get this app. i am now finding ways to use thumbjam as a self-study music tool. by creating a rhythm in something like Figure, and importing it into Thumbjam, i can experiment with various scales and intervals. fun stuff!
(v2.5) this was the first music app i owned; thumbjam remains one app i use each time i do something creative. this latest update just shows how committed the dev is.

making music with this app is easy. if you don't have it yet; get it!!

Great app & Support


The new update to add Audiobus 3 MIDI support includes the ability to use ThumbJam as a scale filter so it will take input MIDI notes and use the closest note in your scale in ThumJam to output a note. Since ThumbJam supports importing scala files you can have all sorts of microtonal scales in addition to the wide range of scales already available in the app.

The developer is one of the best at continuing to update and support his apps.

Thumbjam is even more useful now that it can be played in landscape orientation on the iPad. A rock solid app you can't go wrong with. It's a great midi controller too.


Sonosaurus LLC
229.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Sonosaurus LLC


  • Family Sharing

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

More By This Developer

You May Also Like