DrumJam vs VOSIS Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DrumJam
Explore a world of percussion with this app, featuring dynamic drum kits and ethnic instruments. Create complex rhythms by layering loops, adjusting levels, and even randomizing patterns for unique grooves. It's an inspiring tool for musicians of all levels.
- Layered percussion loops
- Ethnic instrument sounds
- Adjustable levels and panning
- Random pattern generation
- Solo instrument jamming
- Customizable drum kits
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DrumJam is a whole new world of percussion and drums for the iPad, iPhone and iPod touch. Designed by award winning international percussionist Pete Lockett and Sonosaurus LLC, the developer of ThumbJam, this app is a real first for percussion. It's an exciting and powerful tool, opening up the world of rhythm in a completely hands-on and inspiring way. Whether you are a novice just looking for a bit of rhythmic fun, a songwriter or producer looking for a fresh rhythmic idea, a percussion student writing arrangements for a project, a music teacher looking for rhythm ideas to teach, or a drum circle facilitator seeking to expand their repertoire, this app has something for you. Pete Lockett has been top of his game for decades and has performed with the stars, from Peter Gabriel and Bjork to Robert Plant, Dido, Jeff Beck and many more. He has also worked extensively in the film industry, arranging and recording all the ethnic percussion for five Bond 007 films. The app is a direct and personal route to his rhythm factory with all the individual percussion parts recorded by Pete. These are not ineffective sequenced patterns but actual recorded audio waiting to groove with rhythm at multiple tempos through your very own mobile device. Through his decades of studio experience Pete has become a master of layering various percussion instruments into mesmerising rhythm fabrics and flowing grooves. Shakers and congas interwoven with Indian ghatam, pop drum set and Arabic req or else a Carnatic kanjira with some Cuban bongos, Latin cowbells, rock drum kit, seed shakes and surdu. There are dozens of different looped instruments to choose from, each with up to 20 different patterns. You can change the levels, alter the pan, mute, solo, and tweak a low-pass filter giving you a great degree of flexibility over each individual part. Or simply press the random button to randomise all (or some) the parts and get some really funky and unexpected changes. It can even automatically randomise periodically for hands-free unpredictability. The excellent time stretch system and multiple-tempo loop recordings mean that you can get great natural sounding audio across a wide tempo range. Change the number of beats to use in the loops to alter time signature. Pick from a wide range of solo instruments where you can jam away over the top of the grooves you create. These include all sorts of ethnic percussion instruments from Kanjira and Ghatam, to Djembe, Bongos, Dube and Cajon, and more. There are also custom drum kits from great drummers such as Johnny Rabb, Russ Miller, KJ Sawka, Dave Langguth, Steve Sidelnyk and Scott Pellegrom. With a detailed and complete range of quantize options performed by simply dragging your fingers around, it is possible for even the absolute novice to get some funky grooves immediately. Additional loops and pad instruments are available for in-app purchase, but rest assured that the base app is loaded with kits and loops! There are also incredible filter, pitch bend, delay, reverb, lofi, and distortion effects available for the solo instruments, which really adds a whole new dimension of live performance possibilities. With multiple save and export options, it is possible to record loops or a whole performance to later import into your DAW or other audio app as 44.1kHz 16-bit WAV files. This is great for studio use and can form the basis of a new song idea very easily. DrumJam supports export via iTunes file sharing, open directly in another app, email, AudioCopy, and export to SoundCloud. There is support for background audio, Audiobus, Inter-app-audio, and a MIDI implementation that supports clock sync in/out, and playing the solo kits externally triggered via MIDI input, or outputting your live pad performance via MIDI output! Also has Ableton Link support! Whatever you do in music, we are certain there is a use for DrumJam in your world. Give it a try and join forces with an ancient percussive energy.
VOSIS Pro
Transform images into unique sounds and compose visual music. This tool offers advanced filters and MIDI control for experimental sound design and creative audio manipulation.
- Image to sound conversion
- Advanced image filters
- MIDI keyboard support
- Customizable presets
- Unlimited recording
- Video file loading (iPad/Desktop)
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VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. VOSIS Pro adds several features to VOSIS useful for sound designers and musicians: Save and load custom presets, connect a MIDI keyboard and play regions with keys, map any control and region positions to MIDI CC, unlimited recording and screen mirroring with no watermark, downsampling/blur/sharpen, and tremolo filters, subdivide large regions into step sequence mode, load video files (iPad and Desktop versions only). Visit vosis.app for sound example, demo videos, and user guide!
Screenshots
Verdict
The clearest difference is in-app purchases: VOSIS Pro at none against DrumJam's 10. DrumJam's advantage is ratings volume (290 vs 7) and rating (4.8 vs 4.6). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
DrumJam costs $7.99 and VOSIS Pro $7.99 up front. DrumJam sells 10 one-off in-app purchases. VOSIS Pro asks for nothing beyond the download.
DrumJam holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: DrumJam has 290 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 86% of DrumJam's written reviews are positive against 67% of VOSIS Pro's.
DrumJam ships an update every 4 months, VOSIS Pro every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | DrumJam | VOSIS Pro |
|---|---|---|
| Price | $7.99 | $7.99 |
| Rating | 4.8 (290 ratings) — better | 4.6 (7 ratings) |
| Positive reviews | 85.7% of reviews — better | 66.7% of reviews |
| Number of ratings | 290 — better | 7 |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 357 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Sonosaurus LLC | Life Orange LLC |
Customer experience
DrumJam
VOSIS Pro
Bugs and requests
DrumJam
Reported bugs
2 issues- Compatibility issues with newer iOS versions
- Sync problems when used with other music apps
Requested features
5 requests- Add support for custom samples and MIDI
- Expand tempo range to include slower and faster options
- Implement support for more time signatures
- Improve file management and organization
- Add ability to record and save custom patterns
VOSIS Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DrumJam
- Cymbals Pack$0.99
- Electro Pack$0.99
- North Indian Pack$0.99
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- Taiko Pack$0.99
- Tambourines and Textures Pack$0.99
- Tuned Percussion Pack$0.99
- Latin Pack$0.99
- African Pack$0.99
- Brazil Pack$0.99
- Mixed World Pack$0.99
VOSIS Pro
No in-app purchases









