# LDX DSP vs JP

The clearest difference is rating: LDX DSP at 5.0 against JP's 1.0. LDX DSP also leads on ratings volume (8 vs 1) and iOS requirement (15.0 vs 26.5). JP's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LDX DSP holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: LDX DSP has 8 ratings behind it against 1, so its average is the more settled of the two.

LDX DSP ships an update every 4 months, JP every 2 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LDX DSP | JP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/ldx-dsp/id6754688403/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/jp-square-synthesizer/id6768194312/reviews) |
| Number of ratings | **8** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 78 MB | 37 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [STETSOM ELETRÔNICA LTDA](https://appshunter.io/developer/1110480569) | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) |

## What reviewers say

### LDX DSP

[App page](https://appshunter.io/ios/app/ldx-dsp/id6754688403)

Control your audio system directly from your smartphone. Adjust car audio in real-time and monitor technical information via Bluetooth. Explore features in demo mode if you don't have a compatible processor.

**Highlights:** Intuitive audio system control, Real-time adjustments, Technical information monitoring, Bluetooth communication, Demo mode for exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### JP

[App page](https://appshunter.io/ios/app/jp-square-synthesizer/id6768194312)

This application emulates a legendary analog polyphonic synthesizer, offering 8 distinct analog synth voices. Users can sculpt sounds with authentic VCF and ADSR controls, utilize an arpeggiator, and split the keyboard for dual-sound performance. Built-in effects and pitch lever allow for expressive sound design on the go.

**Highlights:** 8 Analog Synth Voices, Authentic VCF Control, ADSR Envelope, Arpeggiator with 5 Patterns, Split and Solo Modes, Reverb & Chorus Effects, Pitch Lever

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

**In-app purchases:** none


## Frequently asked questions

### Is LDX DSP free?

LDX DSP is free to download, with no in-app purchases.

### Is JP free?

JP is free to download, with no in-app purchases.

### Which has better reviews, LDX DSP or JP?

LDX DSP is rated higher. LDX DSP averages 5.0 out of 5 from 8 ratings, while JP averages 1.0 from 1 ratings.

### Do LDX DSP or JP have ads?

Neither LDX DSP nor JP shows ads.

### Which is updated more often, LDX DSP or JP?

LDX DSP ships an update every 4 months, and JP every 2 weeks. Most recently, LDX DSP was updated on October 26, 2026 and JP on October 25, 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.*