# microTERA vs iStem

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.

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.

## The numbers

| Metric | microTERA | iStem |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/microtera/id819266128/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 81.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 24 MB | 79 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Jan Maes](https://appshunter.io/developer/1550506252) |

## What reviewers say

### microTERA

[App page](https://appshunter.io/ios/app/microtera/id819266128)

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.

**Highlights:** 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

**In-app purchases:** none


### iStem

[App page](https://appshunter.io/ios/app/istem/id6793296941)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iStem Activation | $4.99 | one-time |


## Frequently asked questions

### Is microTERA free?

microTERA costs $1.99, with no in-app purchases.

### Is iStem free?

iStem is free to download, with in-app purchases available.

### Do microTERA or iStem have ads?

Neither microTERA nor iStem shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*