microTERA vs iStem
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.
iStem
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iStem lets you split songs into drums, bass, vocals, and other instruments, remix them, and practice with tempo/pitch/metronome controls. Features: - Split in instrument/vocal tracks - Detect beats - Count-in function - Speed up or slow down songs - Change pitch - Set up loops for detailed practice - No login or user data required - All computation is done on the device - Export to file
Screenshots
Verdict
The clearest difference is price: iStem at Free against microTERA's $1.99. microTERA's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.0). On 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
iStem is free to download; microTERA costs $1.99 up front. iStem sells 1 one-off in-app purchase. microTERA asks for nothing beyond the download.
| Parameter | microTERA | iStem |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.9 (8 ratings) — better | — |
| Positive reviews | 81.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Jan Maes |
In-app purchases
microTERA
No in-app purchases
iStem
- iStem Activation$4.99









