ThumbJam 4+

Sonosaurus LLC

    • 4.7 • 195 Ratings
    • $8.99



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, even after all these years!

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 via WiFi. Copy and paste audio from other apps using AudioCopy/Paste as well the general pasteboard, via email, AudioShare, iTunes Document Sharing, Files, or open directly in another application. Supports Audiobus and InterApp Audio for streaming sound to/from other apps in real-time, including state save/restore with Audiobus 3.

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. Supports MPE input and output (and did so before it was even a thing)!

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! Go to the Sound menu under Download Samples....

What’s New

Version 2.6.11

- Removed deprecated bluetooth collaboration feature so the app will run on iOS 16
- Fixed pitch bar issues
- User imported scales are now sorted alphabetically (by filename) and are deletable now from the scales chooser
- Fixed Scala file import issue
- Fixed status bar overlap issue on older iPads, and correctly shows it on newer iPhones

Ratings and Reviews

4.7 out of 5
195 Ratings

195 Ratings

polarpaul ,

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.

Conticreative ,

One of the most fun apps on my phone

I am amazed at the versatility of this app. I don’t use it all the time, but occasionally if I need a specific sound played in unusual ways, this is my go to app.
The only drawback I can think of would be to have a piano roll and a better way to handle loops. This makes a perfect looping app, having so many sounds, but the loop interface is very simple.
That said, one can use it with all kind of looping apps as an add on.
Aside from my DAW I’d say this is the best music making app on my phone.

Wickharps ,

Great app, responsive support

Love this app! However I did have a problem with it I couldn't solve without help. The answer was not in the user guide and I got no response when trying to register for the thumb jam forum (noticed no new posts since early 2020). I was eventually able to contact the developer, and he ultimately issued an update to solve my issue (CC1 control)!

App Privacy

The developer, Sonosaurus LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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