# strng vs Filterstation2

The clearest difference is update cadence: strng at every 4 months against Filterstation2's every 19 months. strng also leads on rating (4.7 vs 4.5) and review sentiment (84% vs 75%). On price, ratings volume, ads and in-app purchases there is nothing between them.

strng costs $4.99 and Filterstation2 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

strng holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 35 and 19 respectively. Written reviews point the same way: 84% of strng's written reviews are positive against 75% of Filterstation2's.

strng ships an update every 4 months, Filterstation2 every 19 months. The most recent releases landed on September 29, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | strng | Filterstation2 |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | **[4.7 (35 ratings)](https://appshunter.io/ios/app/strng/id993782289/reviews)** | [4.5 (19 ratings)](https://appshunter.io/ios/app/filterstation2/id1329509841/reviews) |
| Number of ratings | **35** | 19 |
| Positive reviews | **84.4% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 29 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erik Sigth](https://appshunter.io/developer/385275335) | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) |

## What reviewers say

### strng

[App page](https://appshunter.io/ios/app/strng/id993782289)

This app generates plucked string sounds using a physical modeling synthesis engine. It offers polyphonic voices, a built-in keyboard, and MIDI control. Shape your sound with delay and resonant filters, and integrate with other music apps.

**Highlights:** Physical modeling string synthesis, 16 voice polyphony, Built-in 25-key keyboard with aftertouch, MIDI controller support (USB/Wi-Fi), Stereo ping-pong delay, Two-channel resonant filter with LFOs, Audiobus, IAA, and AUv3 support

**Features:** Vision Pro support

**In-app purchases:** none


### Filterstation2

[App page](https://appshunter.io/ios/app/filterstation2/id1329509841)

This app offers a versatile dual filter effect for music production, inspired by classic hardware. It features twelve filter algorithms, an envelope follower, and multiple operating modes for creative sound shaping. Its user-friendly interface and resizable GUI make it a powerful tool for producers.

**Highlights:** Twelve filter algorithms, Envelope follower with sidechain, VCA mode for tremolo/gate, LFO with tempo sync, Serial, parallel, and stereo modes, Resizable GUI, Cross-platform preset manager

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is strng free?

strng costs $4.99, with no in-app purchases.

### Is Filterstation2 free?

Filterstation2 costs $4.99, with no in-app purchases.

### Which has better reviews, strng or Filterstation2?

strng is rated higher. strng averages 4.7 out of 5 from 35 ratings, while Filterstation2 averages 4.5 from 19 ratings.

### Do strng or Filterstation2 have ads?

Neither strng nor Filterstation2 shows ads.

### Which is updated more often, strng or Filterstation2?

strng ships an update every 4 months, and Filterstation2 every 19 months. Most recently, strng was updated on September 29, 2026 and Filterstation2 on September 25, 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.*