# Opia vs AquariumChat

The clearest difference is in-app purchases: Opia at none against AquariumChat's 1. Opia also leads on iOS requirement (12.0 vs 15.0). AquariumChat's advantage is update cadence (fortnightly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. AquariumChat sells 1 in-app purchase, starting at $0.99 per month. Opia asks for nothing beyond the download.

Opia ships an update every 5 months, AquariumChat fortnightly. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Opia | AquariumChat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aquariumchat/id6748924519/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 49 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Opia App Inc.](https://appshunter.io/developer/1575912736) | [Constant Heritage, LLC](https://appshunter.io/developer/1206999958) |

## What reviewers say

### Opia

[App page](https://appshunter.io/ios/app/opia/id1575912734)

**Features:** macOS Compatibility

**In-app purchases:** none


### AquariumChat

[App page](https://appshunter.io/ios/app/aquariumchat/id6748924519)

Express yourself anonymously in a calming underwater world. Your messages appear as floating bubbles that gently disappear, offering a judgment-free space for thoughts and emotional release. Enjoy a therapeutic and visually mesmerizing experience.

**Highlights:** Complete anonymity, Mesmerizing underwater visuals, Therapeutic and stress-relief experience, Advanced content filtering, Messages naturally fade away, Premium features for enhanced experience

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $0.99 | per month |


## Frequently asked questions

### Is Opia free?

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

### Is AquariumChat free?

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

### Do Opia or AquariumChat have ads?

Neither Opia nor AquariumChat shows ads.

### Which is updated more often, Opia or AquariumChat?

Opia ships an update every 5 months, and AquariumChat fortnightly. Most recently, Opia was updated on September 29, 2026 and AquariumChat on October 9, 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.*