# F vs Spirangle

The clearest difference is price: Spirangle at Free against F's $2.99. Spirangle also leads on review sentiment (100% vs 78%). On rating, ratings volume, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for F against 5.0 for Spirangle. Both are backed by a comparable volume of ratings — 18 and 27 respectively. Written reviews are what separate them: 78% of F's written reviews are positive against 100% of Spirangle's.

F ships an update every 8 months, Spirangle every 6 months. The most recent releases landed on September 18, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | F | Spirangle |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (18 ratings)](https://appshunter.io/ios/app/f-16-filter/id1074502761/reviews)** | [5.0 (27 ratings)](https://appshunter.io/ios/app/spirangle/id1564964830/reviews) |
| Number of ratings | 18 | **27** |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 15 MB | 5 MB |
| Requires iOS | **12.0** | 13.4 |
| 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


### Spirangle

[App page](https://appshunter.io/ios/app/spirangle/id1564964830)

This audio effect app provides two distinct delay units for complex sound manipulation. It features a three-tap delay with independent SVF filters and a feedback delay, offering extensive control over resonance, drive, and stereo separation.

**Highlights:** Dual delay units, Three-tap delay, Independent SVF filters, Filter resonance and drive, Stereo separation, Feedback delay, LFO driven panning and modulation

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is Spirangle free?

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

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

F is rated higher. F averages 5.0 out of 5 from 18 ratings, while Spirangle averages 5.0 from 27 ratings.

### Do F or Spirangle have ads?

Neither F nor Spirangle shows ads.

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

F ships an update every 8 months, and Spirangle every 6 months. Most recently, F was updated on September 18, 2026 and Spirangle on July 21, 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.*