# Dolphin Sounds! vs SensOn

The clearest difference is price: SensOn at Free against Dolphin Sounds!'s $0.99. SensOn also leads on review sentiment (100% vs 57%) and rating (5.0 vs 3.9). Dolphin Sounds!'s advantage is in-app purchases (none vs 4) and ads (none vs shown). On ratings volume there is nothing between them.

SensOn is free to download; Dolphin Sounds! costs $0.99 up front. SensOn sells 4 in-app purchases, starting at $9.99 per month. Dolphin Sounds! asks for nothing beyond the download.

SensOn holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 10 and 4 respectively. Written reviews point the same way: 57% of Dolphin Sounds!'s written reviews are positive against 100% of SensOn's.

Dolphin Sounds! ships an update every 3 months, SensOn every 9 days. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Dolphin Sounds! | SensOn |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.9 (10 ratings)](https://appshunter.io/ios/app/dolphin-sounds/id1070671175/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/senson/id6755462239/reviews)** |
| Number of ratings | **10** | 4 |
| Positive reviews | 57.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | **Paid** | Subscription |
| Size | 8 MB | 106 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Leafgreen](https://appshunter.io/developer/1070668841) | [Sensa Something Inc.](https://appshunter.io/developer/1854058302) |

## What reviewers say

### Dolphin Sounds!

[App page](https://appshunter.io/ios/app/dolphin-sounds/id1070671175)

Explore the fascinating world of dolphin communication. Listen to and learn about various dolphin sounds, including whistles and clicks, and discover how these intelligent marine mammals use them to navigate and socialize.

**Highlights:** Listen to various dolphin vocalizations, Learn about dolphin communication, Understand whistles and clicks, Discover echolocation, Identify different sound types

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

**In-app purchases:** none


### SensOn

[App page](https://appshunter.io/ios/app/senson/id6755462239)

This interactive wellness app uses audio stories and AI-powered characters to create personalized relaxation experiences. When paired with a smart wearable, it synchronizes device feedback with the narrative for immersive engagement. Explore emotions and connections in a private, judgment-free digital sanctuary.

**Highlights:** Interactive audio stories, AI-powered characters, Voice and text interaction, Personalized relaxation, Wearable device synchronization, Adaptive narratives, Privacy controls

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $9.99 | per month |
| Premium Monthly | $19.99 | per month |
| Plus Yearly | $99.99 | per year |
| Premium Yearly | $149.99 | per year |


## Frequently asked questions

### Is Dolphin Sounds! free?

Dolphin Sounds! costs $0.99, with no in-app purchases.

### Is SensOn free?

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

### Which has better reviews, Dolphin Sounds! or SensOn?

SensOn is rated higher. Dolphin Sounds! averages 3.9 out of 5 from 10 ratings, while SensOn averages 5.0 from 4 ratings.

### Do Dolphin Sounds! or SensOn have ads?

SensOn shows ads; Dolphin Sounds! does not.

### Which is updated more often, Dolphin Sounds! or SensOn?

Dolphin Sounds! ships an update every 3 months, and SensOn every 9 days. Most recently, Dolphin Sounds! was updated on October 2, 2026 and SensOn on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*