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  • #: 210934
  • Price: $2.99 In Apple Store
  • Category: Music
  • Updated: 2014-10-13
  • Current Version: 1.4.0
  • 1.4.0
  • Size: 1.30 MB
  • Language: English
  • Seller: Henry Lowengard
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © 2008-2011 by Henry Lowengard
  •  Add to Favorite apps



SrutiBox simulates an Indian harmonium, used as a base tone in Indian music and in spiritual practices of chanting and droning.

SrutiBox 1.4 now works under iOS8, iPhone 4, 5, 6, and 6+ sizes, has a slightly different look, and fixes a few bugs that you may have encountered.

SrutiBox is a synthesizer, creating drones with various timbres and precise intonations that blur the distinction between tones, timbres and chords. The drone can be fairly static or undergo slow modulation and harmonic change. It now plays in the background under iOS 4.0 like many other music apps!

Pop over to http://www.jhhl.net/iPhone/SrutiBox/ and listen to some examples!

"I wanted you to know that I have made my debut in Vienna a couple of weeks ago as an iPHONEist.

I played two simultaneously - one with sruti box and the other with a variety of apps.

I am enjoying sruti box immensely! Thank you!"

— Dr. Pauline Oliveros

I also have another Droning app, Droneo, which has a similar interface, but more droning options!

SrutiBox uses 12 "reeds" which can be tuned to a great number of scales, randomly detuned, and chorused and modulated. The pitch interval and volume of each "reed" can be set individually, making for a wide variety of drones. The reeds can be set to various timbres suitable for drones, including vocal-like timbres and low frequency-friendly chirps.

A special iPhone feature of SrutiBox is that you can wave the phone in an imitation of pumping the bellows, adding a touch of realism to the simulation.

SrutiBox can also be used as a pitch source for instrument tuning purposes, or as an aid for learning the difference between Just and Equal Tempered intervals.

As with other iPhone/iPod touch audio applications, it'll sound better through headphones, although in a quiet room, it's quite effective! Make sure to use the volume controls on the side of the phone to set the volume level you like.

See the SrutiBox web pages for more information, hints, and possibly tales of YOUR performances and discoveries:


It's also the place to ask for support and advice, or email tutti-srutti at jhhl.net

also: visit my iPhone App Facebook group for starting discussions etc!


Thank You!

Check out my other apps: Droneo, Tondo, the iPhone Wind Chimes, Lake Piano and Enumero!

What's New in Version 1.4.0

Updated for IOS8 (and iOS7!), and also for iPhone 4, 5,6 and 6+!
With a new, flatter look, same old SrutiBox inside though.

iPhone Screenshots

SrutiBox iPhone Screenshot 1
SrutiBox iPhone Screenshot 2

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Rated 3/5 based on 3 customer reviews.


4/5 stars

Quirky, But Enjoyable Program

Sadly it seems Mr. Lowengard is focusing on Droneo, but the srutibox is fun and *CAN* sound wonderful, if you're willing to play with the settings. I use a variety of noisemakers at night to help me get to sleep, and the problem with most of them is that they offer only a limited set of preprogrammed sounds. I enjoy the variety and customization that srutibox provides. Although a built-in sleep timer would be wonderful, you can use your ipod/iphone timer instead. Get this if you like drones and aren't afraid to fiddle and knobificate!

5/5 stars

Fantastic drone app

This is a great sounding and feature packed app. I am a just intonation enthusiast and i love the amazing amount of flexibility allowed in specifying intervals and timbres. Very useful and unique. My first app review-- just had to say something about this one.

0/5 stars

Dew dew

Sounds are very very bad. Waste of money. Should be marketed as a simple multiple sine wave generator.


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The information may be outdated (2017-03-08 18:17:22). For actual information go to iTunes

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