Tachyon vs sqsl Mantra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tachyon
This app allows users to blend any two sounds together to create unique musical expressions. Its intuitive interface lets you control pitch and tone independently, offering a mesmerizing visual experience as you play.
- Blend any two sounds
- Independent pitch and tone control
- Intuitive touch interface
- Mesmerizing visual feedback
- Custom sound library
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Do you want to play an electric guitar and a piano at the same time? What about choosing the electrifying buzz of a drill and blending it into the soothing tone of a human voice? Jordan Rudess and Kevin Chartier’s Tachyon gives you all these options and more. From the makers of the award winning app, MorphWiz, comes a new creation that allows images and sound to become one as they magically blend under your fingertips. Each note you play is an individual expression, allowing independent control of pitch and tone far beyond that of traditional instruments. Most instruments only allow you to play one sound at a time, but with Tachyon, you can seamlessly blend between any two sounds as you slide your fingers up and down the screen. The visual experience of Tachyon is just as mesmerizing. As you move along the playing surface, a field of twinkling stars morphs into the shape of your selected instrument, allowing a direct correlation between sight and sound. As described by Jordan Rudess, “Tachyon is simple to use and at the same time offers a unique musical expressive power. The sonic core of the app is a custom crafted sound set from my personal library, encompassing sounds as familiar as those you would find in your home toolbox, and as exclusive as the ones I use on tour with Dream Theater." Whether you’re a seasoned musician looking for a next generation instrument to further express your creativity, or just a regular Joe browsing the app store looking for a fun and simple purchase that will delight the whole family, Tachyon is the app for you! “Check out Jordan Rudess’s new album with Steve Horelick entitled “interSonic”which features Wisdom Music Apps”
sqsl Mantra
This experimental MIDI sequencer generates musical patterns with multiple tracks, scales, and transformation options. It allows for deep customization of triggers, pitch, and rhythm, with features for pattern evolution and saving to MIDI files.
- 3-track MIDI sequencing
- Heptatonic scales quantizer
- Scale morphing
- Pattern evolution
- MIDI file export
- Velocity modulation via LFO
- Preset saving
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Experimental MIDI sequencer/pattern generator designed for iPhones. // FEATURES - 3 tracks (A, B, C) - Triggers for each track (3 × 8 triggers) - Pitch values shared across tracks (row of 8 values) - Heptatonic scales quantizer (5 scale patterns × 7 modes × 12 roots) - Scale morphing using Triadic transformations - Degree mask per track (exclusion of specific degrees from the scale) - Degree shift (degree transposition) per track - Gate length per track - Track length control for Track A and Track B (with optional reset synced to Track C) - Track C Pause control (Track C will wait 0-8 steps before looping back to start) - Clock divider per track - Random step jump per track (probability) - Clock acceleration linked to B Track's playhead position - Swing and BPM clock control - Velocity and MIDI channel (1–3) per track - Velocity can be modulated by LFO (per track) with Rate and Amount control - Pattern evolution synced to Track C loop - Evolution has selectable groups of processes/transformations - Variations generator based on current pattern and evolution settings (16 x 4 variations) - Optional automatic capture of output to .MID files (synchronized to Play button) // EVOLUTION When evolution is triggered (Track C loop), it will randomly select one of the enabled transformation groups and apply one of the transformations contained in that group. Transformation groups can also be "locked-in" so they happen each time when evolution is triggered. List of available groups and transformations within them: PITCH - The order of pitch values is reversed - Two pitch values are swapped TRIGS - Two trigger states are swapped (within a single track) - Trigger patterns of two tracks are swapped - The trigger pattern of a single track is reversed SHIFT - The degree is shifted randomly on a single track MORPH - One of the 3 triads defining currently selected scale is rotated (replaced MODE transformation from previous version) PAUSE - Empty steps are added at the end of track C (0-8) FLIP - The pitch values of single track are inverted - The pitch values of all tracks are inverted STEPS - The track length of A or B track is randomized MASK - The degree mask is shifted horizontally by one step (left or right) BPM - BPM is halved or doubled - BPM is inverted (120 BPM taken as the axis) - BPM jumps to a random value READ 1ST - First variation on current variation page is loaded (this transformation is excluded from variation generation). ACCELERATE - Acceleration parameters is randomized (speed up of clock depending on Track B playhead position) RANDOM POSITION A - Random step parameter of Track A is randomized // PRESETS There are 5 × 24 available slots for user presets. BPM and scale settings can be ignored when loading a preset. Evolution variations (64) are saved within presets. // SAVING TO MIDI FILES Output can be automatically saved to a .MID type. File will be located at the “On My iPhone/sqsl Mantra” folder and named using the current date and time. Takes start when PLAY is activated and end/save when PLAY is deactivated. File saving can be enabled (“AUTO SAVE” setting on the MIDI page) even after playback has started, since note events are always automatically captured in memory. Important notes: - Mantra does not make any sounds on its own, it generates MIDI messages (notes). - Mantra is standalone application and it can not be loaded as AUv3 in other apps/hosts. For more information visit: https://www.seqsual.com
Screenshots
Verdict
The clearest difference is price: Tachyon at $1.99 against sqsl Mantra's $14.99. Tachyon also leads on ratings volume (13 vs 1) and chart position (#178 vs unranked). sqsl Mantra's advantage is rating (5.0 vs 3.8) and update cadence (every 3 months vs every 14 months). On ads, in-app purchases, monetization model 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
Tachyon costs $1.99 and sqsl Mantra $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
sqsl Mantra holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Tachyon has 13 ratings behind it against 1, so its average is the more settled of the two.
Tachyon ships an update every 14 months, sqsl Mantra every 3 months. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.
| Parameter | Tachyon | sqsl Mantra |
|---|---|---|
| Price | $1.99 — better | $14.99 |
| Rating | 3.8 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 77.7% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 14 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #178 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 12 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Wizdom Music LLC | Michal Macura |
Customer experience
Tachyon
sqsl Mantra
Bugs and requests
Tachyon
Reported bugs
9 issues- IAA and Audiobus compatibility issues
- Does not work with Audiobus
- Does not launch with Audiobus
- Inter-app audio and Audiobus connectivity missing
- Broken on iPad 2 - iOS 7
Show 4 moreShow fewer
- Not compatible with iOS 11
- No sound output
- App doesn't work anymore
- App is broken
Requested features
18 requests- Audiobus and IAA support
- MIDI support
- MPE support
- Ability to record
- Update for notched iPhones
Show 13 moreShow fewer
- Keyboard view
- More sounds/instrument packs
- Reverb settings
- User sample import
- Customizable scales
- Automation/Arp
- MIDI control
- Ability to import sounds from other Wizdom apps
- Moving filter in FX section
- Hold button
- Option to choose backgrounds
- Lock menu buttons
- More scales and custom scale creation
sqsl Mantra
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tachyon
No in-app purchases
sqsl Mantra
No in-app purchases









