# Coastline vs HeadStack

The clearest difference is price: HeadStack at $7.99 against Coastline's $14.99. HeadStack also leads on update cadence (every 9 days vs every 3 weeks). Coastline's advantage is rating (5.0 vs 4.8) and chart position (#197 vs unranked). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Coastline costs $14.99 and HeadStack $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Coastline holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Coastline ships an update every 3 weeks, HeadStack every 9 days. The most recent releases landed on September 21, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Coastline | HeadStack |
| --- | --- | --- |
| Price | $14.99 | **$7.99** |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/coastline-audio-effect/id6780281953/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/headstack/id6781611375/reviews) |
| Number of ratings | **10** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Paid | Paid |
| Best chart rank | **#197** | — |
| Size | 71 MB | 25 MB |
| Requires iOS | **12.0** | 14 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aqeel Aadam](https://appshunter.io/developer/1724235864) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### Coastline

[App page](https://appshunter.io/ios/app/coastline-audio-effect/id6780281953)

**Currently charting:** #197 Top Paid · Music (US App Store)

This app generates unique audio atmospheres and textures for music production. It uses additive and granular synthesis to add depth and character to tracks, offering extensive modulation and a dual-engine sustainer.

**Highlights:** Dual-engine audio sustainer, Additive and granular synthesis, Custom sample support, Intermodulation and advanced filtering, Extensive modulation options, Cross-platform preset sharing

**Features:** Vision Pro support

**In-app purchases:** none


### HeadStack

[App page](https://appshunter.io/ios/app/headstack/id6781611375)

This app offers a virtual tape loop with 8 independently configurable playback heads for creating diverse echo effects. It captures the warmth of classic tape machines while offering modern flexibility for sound design, from vintage echoes to evolving ambient textures.

**Highlights:** Multi-head tape engine with 8 playback heads, Vintage tape character and imperfections, Independent control for each playback head, Rotating head wheel for dynamic effects, Granular harmony engine for pitch-shifted textures, Per-head modulation and creative feedback routing, Diffusion and smearing for atmospheric washes

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

**In-app purchases:** none


## Frequently asked questions

### Is Coastline free?

Coastline costs $14.99, with no in-app purchases.

### Is HeadStack free?

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

### Which has better reviews, Coastline or HeadStack?

Coastline is rated higher. Coastline averages 5.0 out of 5 from 10 ratings, while HeadStack averages 4.8 from 5 ratings.

### Do Coastline or HeadStack have ads?

Neither Coastline nor HeadStack shows ads.

### Which is updated more often, Coastline or HeadStack?

Coastline ships an update every 3 weeks, and HeadStack every 9 days. Most recently, Coastline was updated on September 21, 2026 and HeadStack on October 1, 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.*