# Sewer Pipe Calculator vs Culvert Studio

The clearest difference is in-app purchases: Culvert Studio at none against Sewer Pipe Calculator's 3. Culvert Studio also leads on update cadence (daily vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sewer Pipe Calculator sells 3 one-off in-app purchases. Culvert Studio asks for nothing beyond the download.

Sewer Pipe Calculator ships an update every 10 days, Culvert Studio daily. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Sewer Pipe Calculator | Culvert Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Size | 31 MB | 43 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) | [Jagdeep Singh](https://appshunter.io/developer/1865361721) |

## What reviewers say

### Sewer Pipe Calculator

[App page](https://appshunter.io/ios/app/sewer-pipe-calculator/id6758410223)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SewerCalc Pro | $2.99 | one-time |
| Structures Pack | $3.99 | one-time |
| Sewer Designer | $7.99 | one-time |


### Culvert Studio

[App page](https://appshunter.io/ios/app/culvert-studio/id6758688358)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sewer Pipe Calculator free?

Sewer Pipe Calculator is free to download, with in-app purchases available.

### Is Culvert Studio free?

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

### Do Sewer Pipe Calculator or Culvert Studio have ads?

Neither Sewer Pipe Calculator nor Culvert Studio shows ads.

### Which is updated more often, Sewer Pipe Calculator or Culvert Studio?

Sewer Pipe Calculator ships an update every 10 days, and Culvert Studio daily. Most recently, Sewer Pipe Calculator was updated on October 25, 2026 and Culvert Studio on October 18, 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.*