# Pentaholic Synth vs SJ

The clearest difference is price: Pentaholic Synth at Free against SJ's $0.49. Pentaholic Synth also leads on update cadence (every 6 days vs fortnightly) and iOS requirement (16.0 vs 26.5). SJ's advantage is in-app purchases (none vs 1) and chart position (#192 vs unranked). On ads and device support there is nothing between them.

Pentaholic Synth is free to download; SJ costs $0.49 up front. Pentaholic Synth sells 1 one-off in-app purchase. SJ asks for nothing beyond the download.

Pentaholic Synth ships an update every 6 days, SJ fortnightly. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Pentaholic Synth | SJ |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/pentaholic-synth/id6762106586/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free | — |
| Best chart rank | — | **#192** |
| Size | 21 MB | 30 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Strickland](https://appshunter.io/developer/1892938530) | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) |

## What reviewers say

### Pentaholic Synth

[App page](https://appshunter.io/ios/app/pentaholic-synth/id6762106586)

This app digitally recreates a classic polyphonic synthesizer, offering authentic sound design and songwriting inspiration. It features a 300-note sequencer, multiple oscillators per voice, and performance controls like a joystick and expression pedal inputs.

**Highlights:** Authentic 5-voice polyphony, 3 oscillators per voice with 8 waveforms, Component-level circuit modeling, Dual ADSR envelopes, 300-note polyphonic sequencer, Joystick and expression pedal support

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Features | $28.00 | one-time |


### SJ

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

**Currently charting:** #192 Top Paid · Music (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pentaholic Synth free?

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

### Is SJ free?

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

### Do Pentaholic Synth or SJ have ads?

Neither Pentaholic Synth nor SJ shows ads.

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

Pentaholic Synth ships an update every 6 days, and SJ fortnightly. Most recently, Pentaholic Synth was updated on October 31, 2026 and SJ on October 29, 2026.

---

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