# PolyIvoks Filter vs TB GonioMeter

The clearest difference is in-app purchases: TB GonioMeter at none against PolyIvoks Filter's 1. TB GonioMeter also leads on review sentiment (100% vs 86%). PolyIvoks Filter's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (10.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. PolyIvoks Filter sells 1 one-off in-app purchase. TB GonioMeter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for PolyIvoks Filter against 4.6 for TB GonioMeter. Both are backed by a comparable volume of ratings — 21 and 23 respectively. Written reviews are what separate them: 86% of PolyIvoks Filter's written reviews are positive against 100% of TB GonioMeter's.

PolyIvoks Filter ships an update fortnightly, TB GonioMeter every 2 months. The most recent releases landed on September 13, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | PolyIvoks Filter | TB GonioMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (21 ratings)](https://appshunter.io/ios/app/polyivoks-filter/id1507649629/reviews)** | [4.6 (23 ratings)](https://appshunter.io/ios/app/tb-goniometer/id6444903624/reviews) |
| Number of ratings | 21 | **23** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 11 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RRS, OOO](https://appshunter.io/developer/1486125568) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### 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 |


### TB GonioMeter

[App page](https://appshunter.io/ios/app/tb-goniometer/id6444903624)

Analyze stereo image imbalances and frequency correlations in real-time. Ensure your audio content is high quality and compatible with mono down-mixes, crucial for mobile entertainment. This tool offers detailed waveform inspection and balance spectrum analysis.

**Highlights:** Real-time goniometer for stereo image waveforms, Real-time correlation meter and spectrum, Real-time stereo balance and spectrum meter, Color themes for UI, Mono down-mix compatibility check, Optimized for iPad, compatible with iPhone/iPod Touch

**In-app purchases:** none


## Frequently asked questions

### Is PolyIvoks Filter free?

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

### Is TB GonioMeter free?

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

### Which has better reviews, PolyIvoks Filter or TB GonioMeter?

PolyIvoks Filter is rated higher. PolyIvoks Filter averages 4.7 out of 5 from 21 ratings, while TB GonioMeter averages 4.6 from 23 ratings.

### Do PolyIvoks Filter or TB GonioMeter have ads?

Neither PolyIvoks Filter nor TB GonioMeter shows ads.

### Which is updated more often, PolyIvoks Filter or TB GonioMeter?

PolyIvoks Filter ships an update fortnightly, and TB GonioMeter every 2 months. Most recently, PolyIvoks Filter was updated on September 13, 2026 and TB GonioMeter on September 8, 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.*