# HydroDay vs Hearapy

The clearest difference is in-app purchases: HydroDay at none against Hearapy's 2. Hearapy's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Hearapy sells 2 in-app purchases, starting at $1.99 per month. HydroDay asks for nothing beyond the download.

## The numbers

| Metric | HydroDay | Hearapy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hearapy-motion-sickness-aid/id6761693902/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 10 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Geonung Cheong](https://appshunter.io/developer/1799622308) | [Osman Tufekci](https://appshunter.io/developer/1254974182) |

## What reviewers say

### HydroDay

[App page](https://appshunter.io/ios/app/hydroday/id6756011046)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hearapy

[App page](https://appshunter.io/ios/app/hearapy-motion-sickness-aid/id6761693902)

This app uses scientifically researched 100Hz vestibular stimulation via AirPods to prevent motion sickness. A single 60-second session synchronizes conflicting sensory signals, reducing nausea and restoring comfortable travel.

**Highlights:** 100Hz pure sine wave vestibular stimulation, Optimized for AirPods Pro and Max, 60-second focused sessions, Intuitive neumorphic interface, Taptic Engine haptic feedback

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hearapy Monthly | $1.99 | per month |
| Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is HydroDay free?

HydroDay is free to download, with no in-app purchases.

### Is Hearapy free?

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

### Do HydroDay or Hearapy have ads?

HydroDay shows ads; Hearapy does not.

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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.*