# F vs CuSnP

The clearest difference is price: CuSnP at Free against F's $2.99. CuSnP also leads on review sentiment (100% vs 78%) and update cadence (every 2 months vs every 8 months). F's advantage is rating (5.0 vs 4.8). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

CuSnP is free to download; F costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

F holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 18 and 36 respectively. Written reviews complicate that: 78% of F's written reviews are positive against 100% of CuSnP's, so the app with the better star average is not the one people write more warmly about.

F ships an update every 8 months, CuSnP every 2 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | F | CuSnP |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (18 ratings)](https://appshunter.io/ios/app/f-16-filter/id1074502761/reviews)** | [4.8 (36 ratings)](https://appshunter.io/ios/app/cusnp/id1418236738/reviews) |
| Number of ratings | 18 | **36** |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 15 MB | 9 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [Neon Silicon](https://appshunter.io/developer/1409314093) |

## 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


### CuSnP

[App page](https://appshunter.io/ios/app/cusnp/id1418236738)

This app acts as a container for a sympathetic string simulation Audio Unit Extension. It requires another application to function, where it generates resonant sounds based on input audio. It's designed for musicians and audio producers.

**Highlights:** Sympathetic string simulation, Audio Unit Extension (AU), Resonates with input audio, Container for AU functionality, Documentation included

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is CuSnP free?

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

### Which has better reviews, F or CuSnP?

F is rated higher. F averages 5.0 out of 5 from 18 ratings, while CuSnP averages 4.8 from 36 ratings.

### Do F or CuSnP have ads?

Neither F nor CuSnP shows ads.

### Which is updated more often, F or CuSnP?

F ships an update every 8 months, and CuSnP every 2 months. Most recently, F was updated on October 9, 2026 and CuSnP on October 7, 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.*