# PipeAtlas vs HydroniCalc

PipeAtlas and HydroniCalc are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. PipeAtlas sells 3 in-app purchases, starting at $1.99 per month and HydroniCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PipeAtlas | HydroniCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 61 MB | 7 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Seize Times E-Commerce Co., Ltd.](https://appshunter.io/developer/368397197) | [Eric Chmara](https://appshunter.io/developer/1892404568) |

## What reviewers say

### PipeAtlas

[App page](https://appshunter.io/ios/app/pipeatlas/id6796687644)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PipeAtlas Pro One Month | $1.99 | per month |
| PipeAtlas Pro One Year | $19.99 | per year |
| PipeAtlas Pro Lifetime | $29.99 | one-time |


### HydroniCalc

[App page](https://appshunter.io/ios/app/hydronicalc/id6796810526)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Calculators | $12.99 | one-time |


## Frequently asked questions

### Is PipeAtlas free?

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

### Is HydroniCalc free?

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

### Do PipeAtlas or HydroniCalc have ads?

Neither PipeAtlas nor HydroniCalc shows ads.

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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.*