# Stone Echo vs Pulse16

The clearest difference is price: Pulse16 at Free against Stone Echo's $2.99. Pulse16 also leads on rating (4.0 vs 2.8) and update cadence (every 3 days vs every 38 months). Stone Echo's advantage is in-app purchases (none vs 1) and ratings volume (4 vs 1). On ads and device support there is nothing between them.

Pulse16 is free to download; Stone Echo costs $2.99 up front. Pulse16 sells 1 one-off in-app purchase. Stone Echo asks for nothing beyond the download.

Pulse16 holds the better App Store score, 4.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Stone Echo ships an update every 38 months, Pulse16 every 3 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Stone Echo | Pulse16 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/stone-echo/id1354390681/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/pulse16/id6819354504/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 9 MB | 23 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) | [Navid Anzalichi](https://appshunter.io/developer/6819354506) |

## What reviewers say

### Stone Echo

[App page](https://appshunter.io/ios/app/stone-echo/id1354390681)

This app creates a unique echo effect with adjustable frequency modulation, inspired by Mayan pyramid acoustics. It offers musical and experimental soundscapes, functioning as a standalone application or an AUV3 plugin.

**Highlights:** Frequency changing echo effect, Phase modulated frequency, Standalone app and AUV3 plugin, Adjustable time, feedback, and level, UFO mode for experimental sounds

**Features:** Vision Pro support

**In-app purchases:** none


### Pulse16

[App page](https://appshunter.io/ios/app/pulse16/id6819354504)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock saving | $0.29 | one-time |


## Frequently asked questions

### Is Stone Echo free?

Stone Echo costs $2.99, with no in-app purchases.

### Is Pulse16 free?

Pulse16 is free to download, with in-app purchases available.

### Which has better reviews, Stone Echo or Pulse16?

Pulse16 is rated higher. Stone Echo averages 2.8 out of 5 from 4 ratings, while Pulse16 averages 4.0 from 1 ratings.

### Do Stone Echo or Pulse16 have ads?

Neither Stone Echo nor Pulse16 shows ads.

### Which is updated more often, Stone Echo or Pulse16?

Stone Echo ships an update every 38 months, and Pulse16 every 3 days. Most recently, Stone Echo was updated on November 2, 2026 and Pulse16 on November 6, 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.*