# Synthesizer Sim vs LuSID Synthesizer

The clearest difference is rating: LuSID Synthesizer at 5.0 against Synthesizer Sim's 4.3. LuSID Synthesizer also leads on in-app purchases (none vs 3) and ads (none vs shown). Synthesizer Sim's advantage is ratings volume (16 vs 1) and iOS requirement (15.0 vs 18.4). On price, update cadence and device support there is nothing between them.

Both are free to download. Synthesizer Sim sells 3 in-app purchases, starting at $2.99 per month. LuSID Synthesizer asks for nothing beyond the download.

LuSID Synthesizer holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Synthesizer Sim has 16 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Synthesizer Sim | LuSID Synthesizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (16 ratings)](https://appshunter.io/ios/app/synthesizer-sim/id6740828486/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lusid-synthesizer/id6764299166/reviews)** |
| Number of ratings | **16** | 1 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 54 MB | 3 MB |
| Requires iOS | **15.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alper Kahriman](https://appshunter.io/developer/1054578352) | [Lukasz Pomianek](https://appshunter.io/developer/1890450297) |

## What reviewers say

### Synthesizer Sim

[App page](https://appshunter.io/ios/app/synthesizer-sim/id6740828486)

Transform your device into a versatile synthesizer with extensive sound-shaping capabilities. Explore a wide range of waveforms, envelopes, and effects. Record and share your musical creations as WAV files.

**Highlights:** Multiple oscillators and waveforms, Extensive envelope and LFO modulation, Built-in distortion, EQ, chorus, delay, reverb, Responsive keyboard with MIDI support, Poly, mono, and legato voice modes, Customizable scales and tunings, Performance recording and WAV export

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $14.99 | per year |
| Lifetime Premium | $29.99 | one-time |


### LuSID Synthesizer

[App page](https://appshunter.io/ios/app/lusid-synthesizer/id6764299166)

Create synthwave music with a powerful, intuitive synthesizer. Features a multi-voice engine, versatile filter, built-in sequencer, and a range of effects. Record and share your creations easily.

**Highlights:** Eight-voice polyphony with unison, Audio-rate filter envelope, Built-in 4-64 step sequencer, Tape-style delay, chorus, distortion, reverb, Neon Liquid-Glass interface, Record and share WAV files

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

**In-app purchases:** none


## Frequently asked questions

### Is Synthesizer Sim free?

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

### Is LuSID Synthesizer free?

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

### Which has better reviews, Synthesizer Sim or LuSID Synthesizer?

LuSID Synthesizer is rated higher. Synthesizer Sim averages 4.3 out of 5 from 16 ratings, while LuSID Synthesizer averages 5.0 from 1 ratings.

### Do Synthesizer Sim or LuSID Synthesizer have ads?

Synthesizer Sim shows ads; LuSID Synthesizer does not.

### Which is updated more often, Synthesizer Sim or LuSID Synthesizer?

Synthesizer Sim ships an update every 2 months, and LuSID Synthesizer every 2 months. Most recently, Synthesizer Sim was updated on November 8, 2026 and LuSID Synthesizer on November 5, 2026.

---

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