# Hisooth Resonance™ vs Sightlines

The clearest difference is price: Hisooth Resonance™ at Free against Sightlines's $7.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Hisooth Resonance™ is free to download; Sightlines costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hisooth Resonance™ ships an update every 4 days, Sightlines weekly. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Hisooth Resonance™ | Sightlines |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | — | Paid |
| Size | 27 MB | 19 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [江苏名腾医疗器械有限公司](https://appshunter.io/developer/1646005951) | [Aqeel Aadam](https://appshunter.io/developer/1724235864) |

## What reviewers say

### Hisooth Resonance™

[App page](https://appshunter.io/ios/app/hisooth-resonance/id6757639719)

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

**In-app purchases:** none


### Sightlines

[App page](https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031)

Shape sounds with a playable harmonic filter. Add motion, stereo spread, and unique textures to noise, samples, or synths. Tune it like a resonator or control it with MIDI for endless sonic possibilities.

**Highlights:** Harmonic filter bank, MIDI control, Sample loading, Noise and synth sound sources, Modulation capabilities, Built-in chorus, delay, and reverb

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hisooth Resonance™ free?

Hisooth Resonance™ is free to download, with no in-app purchases.

### Is Sightlines free?

Sightlines costs $7.99, with no in-app purchases.

### Do Hisooth Resonance™ or Sightlines have ads?

Neither Hisooth Resonance™ nor Sightlines shows ads.

### Which is updated more often, Hisooth Resonance™ or Sightlines?

Hisooth Resonance™ ships an update every 4 days, and Sightlines weekly. Most recently, Hisooth Resonance™ was updated on October 4, 2026 and Sightlines 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.*