# Internal Waves vs Gromari

The clearest difference is review sentiment: Gromari at 100% against Internal Waves's 0%. Gromari also leads on in-app purchases (none vs 2) and ads (none vs shown). Internal Waves's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price there is nothing between them.

Both are free to download. Internal Waves sells 2 in-app purchases, starting at $2.99 per month. Gromari asks for nothing beyond the download.

## The numbers

| Metric | Internal Waves | Gromari |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/gromari/id6749023025/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 133 MB | 1.4 GB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Riley McKinnon](https://appshunter.io/developer/1824077312) | [Christoph Gromer](https://appshunter.io/developer/1821900102) |

## What reviewers say

### Internal Waves

[App page](https://appshunter.io/ios/app/internal-waves-particle-flow/id6748045391)

Create interactive particle art that responds to touch and music. This mindfulness experience offers a calming way to express yourself with light and motion, perfect for relaxation or creative exploration. Features AR mode for painting in your real-world space.

**Highlights:** Interactive particle art creation, Music-reactive visuals, Augmented Reality (AR) mode, Multi-touch drawing, Customizable particle effects, Mindfulness and relaxation focus

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Particle Flow Premium–Monthly | $2.99 | per month |
| Particle Flow Premium – Yearly | $9.99 | per year |


### Gromari

[App page](https://appshunter.io/ios/app/gromari/id6749023025)

Immerse yourself in a digital art experience designed for mindfulness. Interact with unique artworks, enjoy accompanying soundscapes, and track your mindful moments, syncing them with your health data.

**Highlights:** Curated digital artwork collection, Interactive art experiences, Unique soundscapes and music, Haptic feedback, Mindful time tracking, Apple Health sync

**In-app purchases:** none


## Frequently asked questions

### Is Internal Waves free?

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

### Is Gromari free?

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

### Do Internal Waves or Gromari have ads?

Internal Waves shows ads; Gromari does not.

---

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