# FlexTune vs RRS Passive EQ Collection

The clearest difference is review sentiment: RRS Passive EQ Collection at 100% against FlexTune's 40%. RRS Passive EQ Collection also leads on rating (4.8 vs 2.8). FlexTune's advantage is in-app purchases (none vs 1) and iOS requirement (8.2 vs 10.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. RRS Passive EQ Collection sells 1 one-off in-app purchase. FlexTune asks for nothing beyond the download.

RRS Passive EQ Collection holds the better App Store score, 4.8 against 2.8. Both are backed by a comparable volume of ratings — 10 and 16 respectively. Written reviews point the same way: 40% of FlexTune's written reviews are positive against 100% of RRS Passive EQ Collection's.

FlexTune ships an update every 3 months, RRS Passive EQ Collection every 2 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | FlexTune | RRS Passive EQ Collection |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (10 ratings)](https://appshunter.io/ios/app/flextune/id1417233546/reviews) | **[4.8 (16 ratings)](https://appshunter.io/ios/app/rrs-passive-eq-collection/id1584945520/reviews)** |
| Number of ratings | 10 | **16** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 22 MB |
| Requires iOS | **8.2** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kicker](https://appshunter.io/developer/1632645523) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### FlexTune

[App page](https://appshunter.io/ios/app/flextune/id1417233546)

Personalize your car's audio system with this app. Easily adjust bass, clarity, and other sound settings using a five-band equalizer and create custom profiles for different music or moods. Enjoy wireless control of your KICKER audio system.

**Highlights:** Variable Five-Band Parametric Equalizer, Multiple Custom Presets, Remote KICKER Subwoofer Gain, Adjustable Center-Image Control, Bluetooth LE Enabled, Wireless Control

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

**In-app purchases:** none


### RRS Passive EQ Collection

[App page](https://appshunter.io/ios/app/rrs-passive-eq-collection/id1584945520)

This app offers a collection of vintage-inspired equalizers, combining three classic models into a single, full-featured audio plugin. It provides detailed control over tone shaping for music production and mixing. A demo version is available with limited playtime.

**Highlights:** Combines EQP-1A, MEQ-5, and HLF-3C equalizers, Standalone and AUv3 plugin support, Modeled vintage analog saturation, Undo/Redo functionality, A/B comparison, Macro controllers, Built-in Gain Match

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS Passive EQ Collection Full | $8.99 | one-time |


## Frequently asked questions

### Is FlexTune free?

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

### Is RRS Passive EQ Collection free?

RRS Passive EQ Collection is free to download, with in-app purchases available.

### Which has better reviews, FlexTune or RRS Passive EQ Collection?

RRS Passive EQ Collection is rated higher. FlexTune averages 2.8 out of 5 from 10 ratings, while RRS Passive EQ Collection averages 4.8 from 16 ratings.

### Do FlexTune or RRS Passive EQ Collection have ads?

Neither FlexTune nor RRS Passive EQ Collection shows ads.

### Which is updated more often, FlexTune or RRS Passive EQ Collection?

FlexTune ships an update every 3 months, and RRS Passive EQ Collection every 2 months. Most recently, FlexTune was updated on October 24, 2026 and RRS Passive EQ Collection on October 27, 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.*