# Mud fluid vs Мусорка

The clearest difference is in-app purchases: Мусорка at none against Mud fluid's 3. Mud fluid's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mud fluid sells 3 one-off in-app purchases. Мусорка asks for nothing beyond the download.

Mud fluid ships an update every 2 weeks, Мусорка every 6 weeks. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Mud fluid | Мусорка |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 25 MB |
| Requires iOS | 16.1 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dmitry Pavlov](https://appshunter.io/developer/1582369829) | [Anton Naidenov](https://appshunter.io/developer/1892830787) |

## What reviewers say

### Mud fluid

[App page](https://appshunter.io/ios/app/mud-fluid/id1582369827)

This app assists mud engineers with rapid calculations for wellbore flushing, including time and volume. It supports drilling intervals like surface casing and production casing, and can also compute solution weight and dilution. Metric units are currently available, with imperial units planned for a future update.

**Highlights:** Wellbore flushing time and volume calculation, Supports drilling intervals, Solution weight calculation, Dilution calculation, Metric units support

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tips | $0.99 | one-time |
| For cookies | $0.99 | one-time |
| For coffee | $4.99 | one-time |


### Мусорка

[App page](https://appshunter.io/ios/app/id6762083275)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mud fluid free?

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

### Is Мусорка free?

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

### Do Mud fluid or Мусорка have ads?

Neither Mud fluid nor Мусорка shows ads.

### Which is updated more often, Mud fluid or Мусорка?

Mud fluid ships an update every 2 weeks, and Мусорка every 6 weeks. Most recently, Mud fluid was updated on October 1, 2026 and Мусорка on October 15, 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.*