# Tera Synth vs SJ

The clearest difference is update cadence: SJ at fortnightly against Tera Synth's every 4 months. SJ also leads on chart position (#164 vs unranked) and price ($0.49 vs $1.99). Tera Synth's advantage is iOS requirement (12.0 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

Tera Synth costs $1.99 and SJ $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Tera Synth ships an update every 4 months, SJ fortnightly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Tera Synth | SJ |
| --- | --- | --- |
| Price | $1.99 | **$0.49** |
| Rating | **[4.8 (27 ratings)](https://appshunter.io/ios/app/tera-synth/id898308034/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 86.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Paid | — |
| Best chart rank | — | **#164** |
| Size | 36 MB | 30 MB |
| Requires iOS | **12.0** | 26.5 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) |

## What reviewers say

### Tera Synth

[App page](https://appshunter.io/ios/app/tera-synth/id898308034)

Create unique sounds beyond traditional synthesizers with a modular analog and digital synthesis workstation. Combine physical modeling, wireless patching, and built-in effects for a fat, individual sound. Features a programmable arpeggiator and live playing options.

**Highlights:** Modular analog and digital synthesis, Physical modeling modules, Wireless patching and modulation routing, Built-in distortion, delay, chorus, phaser, and reverb effects, Programmable arpeggiator, Live playing with onscreen keyboard and MIDI support, Audiobus and Inter-App-Audio integration

**In-app purchases:** none


### SJ

[App page](https://appshunter.io/ios/app/sj-square-synthesizer/id6797394418)

**Currently charting:** #164 Top Paid · Music (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tera Synth free?

Tera Synth costs $1.99, with no in-app purchases.

### Is SJ free?

SJ costs $0.49, with no in-app purchases.

### Do Tera Synth or SJ have ads?

Neither Tera Synth nor SJ shows ads.

### Which is updated more often, Tera Synth or SJ?

Tera Synth ships an update every 4 months, and SJ fortnightly. Most recently, Tera Synth was updated on October 15, 2026 and SJ on October 14, 2026.

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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.*