# AquariumChat vs NDPM Chat

The clearest difference is in-app purchases: NDPM Chat at none against AquariumChat's 1. NDPM Chat also leads on update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

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

AquariumChat ships an update fortnightly, NDPM Chat every 4 days. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | AquariumChat | NDPM Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aquariumchat/id6748924519/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 224 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Constant Heritage, LLC](https://appshunter.io/developer/1206999958) | [Oleksandr Tarasenko](https://appshunter.io/developer/6784307677) |

## What reviewers say

### 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 |


### NDPM Chat

[App page](https://appshunter.io/ios/app/ndpm-chat/id6792734385)

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

**In-app purchases:** none


## Frequently asked questions

### Is AquariumChat free?

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

### Is NDPM Chat free?

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

### Do AquariumChat or NDPM Chat have ads?

Neither AquariumChat nor NDPM Chat shows ads.

### Which is updated more often, AquariumChat or NDPM Chat?

AquariumChat ships an update fortnightly, and NDPM Chat every 4 days. Most recently, AquariumChat was updated on September 7, 2026 and NDPM Chat on September 10, 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.*