microTERA vs Ulzii Drone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
microTERA
Explore unique sonic textures with this waveshaping synthesizer. Generate novel sound patches randomly or program them with detailed controls. Includes a variety of built-in effects and advanced sequencing capabilities.
- Waveshaper with user programmable shape
- Random sound patch generation
- Sequencer with programmable steps
- Built-in effects (Chorus, Phaser, Reverb, etc.)
- Over 150 factory sounds
- Audiobus and Ableton Link compatible
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Waveshaping Synthesis is a type of distortion synthesis that can create dynamic spectra in a controlled way. In waveshaping, it is possible to change the spectrum with the amplitude of the sound. A simple example of this method is the clipping caused by overdriving an audio amplifier. These simple method creates an astonishing variety of sounds which are very unique and can't be reproduced by any other contemporary synth! microTERA gives you also a method of getting randomly generated sound patches in a way you never experienced before: roll the dice! Every single try gives you a new unique sound patch, really every try, promised… Waveshaping Synthesis • Wavehaper with user programmable shape • Spectral shape specification • Three sine oscillators • Feedback input for noise components • 4 Low frequency oscillators • 4 Envelopes with tempo sync • 64 time/level segments per envelope • Monophonic or polyphonic with 16 voices. • Over 150 factory sounds • Uses programmable sequences with up to 32 steps. • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 32 Arpeggios included, unlimited useer arpeggios possible. • For each step you can program tie, accent, transposition and note order Effects • Chorus • Phaser • Distortion (Tape/Tube/...) • Echo/Delay • Reverb Global • Audiobus compatible (Input slot) with state saving • Support for Ableton Link. • Inter App Audio compatible. • CoreMIDI / Virtual MIDI • Audio recorder with Metronome. • Upload to SoundCloud and File Export. • Audio pasteboard.
Ulzii Drone
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Ulzii is an instrument for fingertip meditation, inspired by Mongolian throat-singing (khoomei) and the tradition of drone music. At its core is continuous tuning, free from the twelve equal-tempered Western scale. Two ribbons let you freely set the pitch of two voices; touching the central pad shapes the color of that voice's resonance (like a vowel) depending on where you touch. The name "Ulzii" comes from the endless knot found in traditional Mongolian ornamentation — echoing this app's core idea of an unbroken, continuous drone. - Continuous tuning ribbons: note names are just reference points — slide your finger to tune freely to anything in between - Central pad: touch position shapes vocal resonance (overtone color); an optional VOWELS overlay shows common vowel positions - Three playing modes: UNISON (locked to voice I), FOLLOW (a delayed echo of voice I), and ORBIT (an autonomous, ever-moving layer) - Sleep / meditation timer: 3–30 minutes, gently fading out at a slower tempo — ideal for bedtime or meditation Headphones are recommended. This app does not collect or transmit any personal data or performance data.
Screenshots
Verdict
The clearest difference is update cadence: Ulzii Drone at daily against microTERA's every 4 months. microTERA's advantage is iOS requirement (11.0 vs 17.0). On price, ads, in-app purchases 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
microTERA costs $1.99 and Ulzii Drone $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
microTERA ships an update every 4 months, Ulzii Drone daily. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | microTERA | Ulzii Drone |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.9 (8 ratings) — better | — |
| Positive reviews | 81.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 4 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Keisuke Oki |
In-app purchases
microTERA
No in-app purchases
Ulzii Drone
No in-app purchases









