# Jam Synth vs PolyIvoks Filter

The clearest difference is update cadence: PolyIvoks Filter at fortnightly against Jam Synth's every 4 months. PolyIvoks Filter also leads on iOS requirement (10.0 vs 12.0). Jam Synth's advantage is rating (5.0 vs 4.7). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Jam Synth sells 4 one-off in-app purchases and PolyIvoks Filter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Jam Synth holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 28 and 21 respectively. Written reviews complicate that: 84% of Jam Synth's written reviews are positive against 86% of PolyIvoks Filter's, so the app with the better star average is not the one people write more warmly about.

Jam Synth ships an update every 4 months, PolyIvoks Filter fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Jam Synth | PolyIvoks Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (28 ratings)](https://appshunter.io/ios/app/jam-synth/id732618765/reviews)** | [4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews) |
| Number of ratings | **28** | 21 |
| Positive reviews | 84.2% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 17 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Derek Mesecar](https://appshunter.io/developer/505825864) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### Jam Synth

[App page](https://appshunter.io/ios/app/jam-synth/id732618765)

Transform your guitar into a synthesizer with this app. It accurately tracks pitch and amplitude to control digital oscillators, offering unique synth leads and effects. Go beyond MIDI with expressive, organic sounds and advanced modulation options.

**Highlights:** Monophonic guitar synthesizer, Pitch and amplitude tracking, Multiple oscillator wave shapes, Dynamic filter tracking, Advanced FX section (LFO, Delay, Harmonizer, etc.), MIDI output for external synths, High-accuracy pitch tuner

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intelligent Harmonizer | Free | one-time |
| Rotary Vibe | Free | one-time |
| Rainbows | Free | one-time |
| Time Stopper | Free | one-time |


### PolyIvoks Filter

[App page](https://appshunter.io/ios/app/polyivoks-filter/id1507649629)

This audio effect plugin emulates the sound of a legendary 1980s Soviet synthesizer filter. It offers stereo output and a range of modulation and envelope controls for creative sound shaping. A demo version is available with limited free play time.

**Highlights:** Standalone and AUv3 plugin, Modeled vintage filter, LFO and envelope modulation, Stereo output, Scalable GUI, Undo/Redo and A/B comparison

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS PolyIvoks Filter Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is Jam Synth free?

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

### Is PolyIvoks Filter free?

PolyIvoks Filter is free to download, with in-app purchases available.

### Which has better reviews, Jam Synth or PolyIvoks Filter?

Jam Synth is rated higher. Jam Synth averages 5.0 out of 5 from 28 ratings, while PolyIvoks Filter averages 4.7 from 21 ratings.

### Do Jam Synth or PolyIvoks Filter have ads?

Neither Jam Synth nor PolyIvoks Filter shows ads.

### Which is updated more often, Jam Synth or PolyIvoks Filter?

Jam Synth ships an update every 4 months, and PolyIvoks Filter fortnightly. Most recently, Jam Synth was updated on October 6, 2026 and PolyIvoks Filter on October 1, 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.*