This app delivers a bevvy of useful features for electronic music-makers, and has been picking up steam on the Android charts. Some have compared Caustic’s functionality to the seminal beatmaking application Reason — and with good, ahem, reason. Similarly to that desktop software, Caustic for Android packs an analog subsynth, two PCM synths, two 80?s style BassLine synths a la Roland TB-303, sampling drum machine, sequencer, and mixer desk. The app features demo samples for these instruments as well, with built-in filters and effects to tailor your sound. The fully-functional demo version has no time limit, and allows users to explore its range of features before committing to the pro version with an in-app purchase. Unfortunately, the free version doesn’t allow for saving, loading or exporting files, although you could always record them through the output. - Connor McKnight

Caustic Music Rack lets you create electronic music on the go. This app is packed with 8 machines including:

• 1x Virtual analog subsynth
• 2x PCM synths (23 demo samples included)
• 2x 303-like BassLine synths
• 1x Sampling drum machine (9 demo kits included)
• 1x Mixer desk with Delay/Reverb and 7 insert effects
• 1x Song sequencer All files are stored on the SDCard, and users can supply their own WAV files for use in the PCMSynths and BeatBox.

Minimum recommended device specs are:

• 800 MHz ARMv7 processor
• 800 x 480 resolution screen
• Headphones or external speakers

This is a demo version of Caustic Music Rack, with the ability to unlock to full version. There is no time limit in demo mode but save/load/export are disabled. The app will automatically save your current song between sessions. Full version unlock is available as an in-app purchase. The unlock is tied to your Google account, so it will transfer across devices and factory resets.