# iJammer vs Synthesizer Sim

The clearest difference is rating: iJammer at 5.0 against Synthesizer Sim's 4.3. iJammer also leads on in-app purchases (none vs 3). Synthesizer Sim's advantage is update cadence (every 2 months vs every 78 months). On price, ratings volume, ads 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. iJammer asks for nothing beyond the download.

iJammer holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 9 and 16 respectively.

iJammer ships an update every 78 months, Synthesizer Sim every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | iJammer | Synthesizer Sim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ijammer/id1500974138/reviews)** | [4.3 (16 ratings)](https://appshunter.io/ios/app/synthesizer-sim/id6740828486/reviews) |
| Number of ratings | 9 | **16** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 78 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 54 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Callaloo Records LLC](https://appshunter.io/developer/1496870594) | [Alper Kahriman](https://appshunter.io/developer/1054578352) |

## What reviewers say

### iJammer

[App page](https://appshunter.io/ios/app/ijammer/id1500974138)

This app uses device motion to create music and sound effects. Simply activate the feature, move your device, and hear sounds play. It offers various settings for balance practice, virtual juggling, and creative jamming.

**Highlights:** Motion-activated audio, Soundboard with 90+ sounds, Balance and coordination modes, Creative music jamming, Play while standing or sitting

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is iJammer free?

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

### Is Synthesizer Sim free?

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

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

iJammer is rated higher. iJammer averages 5.0 out of 5 from 9 ratings, while Synthesizer Sim averages 4.3 from 16 ratings.

### Do iJammer or Synthesizer Sim have ads?

Both iJammer and Synthesizer Sim show ads.

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

iJammer ships an update every 78 months, and Synthesizer Sim every 2 months. Most recently, iJammer was updated on November 3, 2026 and Synthesizer Sim on November 4, 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.*