# F vs RRS CL1

The clearest difference is price: RRS CL1 at Free against F's $2.99. RRS CL1 also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (10.0 vs 12.0). F's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.5). On review sentiment, ratings volume, ads and device support there is nothing between them.

RRS CL1 is free to download; F costs $2.99 up front. RRS CL1 sells 1 one-off in-app purchase. F asks for nothing beyond the download.

F holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 18 and 28 respectively. Written reviews split almost evenly too, at 78% and 77% positive.

F ships an update every 8 months, RRS CL1 every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | F | RRS CL1 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (18 ratings)](https://appshunter.io/ios/app/f-16-filter/id1074502761/reviews)** | [4.5 (28 ratings)](https://appshunter.io/ios/app/rrs-cl1/id1639305828/reviews) |
| Number of ratings | 18 | **28** |
| Positive reviews | **77.8% of reviews** | 76.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 19 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-16-filter/id1074502761)

This audio effect plugin offers sixteen versatile filter modes with precise controls for frequency, resonance, and analog-style saturation. Visualize your frequency response in real-time for intuitive adjustments. It integrates seamlessly with popular AUv3 compatible music production apps.

**Highlights:** Sixteen filter modes, Frequency and resonance controls, Analog-style saturation, Wet/dry mix, Frequency response display, Zero Delay Feedback algorithm

**In-app purchases:** none


### RRS CL1

[App page](https://appshunter.io/ios/app/rrs-cl1/id1639305828)

This audio effect plugin offers dynamic range compression with unique sonic coloration through saturation and dithering. It includes a limiter, equalizer, and advanced features like parallel compression and M/S mode for detailed audio manipulation.

**Highlights:** Dynamic range compression, Saturation with even harmonics, Dithering for 'air' effect, Limiting module for peak control, Mid-range equalizer, Parallel compression, M/S operational mode

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS CL1 Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is F free?

F costs $2.99, with no in-app purchases.

### Is RRS CL1 free?

RRS CL1 is free to download, with in-app purchases available.

### Which has better reviews, F or RRS CL1?

F is rated higher. F averages 5.0 out of 5 from 18 ratings, while RRS CL1 averages 4.5 from 28 ratings.

### Do F or RRS CL1 have ads?

Neither F nor RRS CL1 shows ads.

### Which is updated more often, F or RRS CL1?

F ships an update every 8 months, and RRS CL1 every 2 months. Most recently, F was updated on October 24, 2026 and RRS CL1 on October 24, 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.*