# Polytropic Pro vs Hanna Pool

Polytropic Pro and Hanna Pool 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. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Polytropic Pro | Hanna Pool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 250 MB | 8 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Polytropic](https://appshunter.io/developer/1613713281) | [Hanna Instruments, Inc.](https://appshunter.io/developer/913755816) |

## What reviewers say

### Polytropic Pro

[App page](https://appshunter.io/ios/app/polytropic-pro/id6452721348)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hanna Pool

[App page](https://appshunter.io/ios/app/hanna-pool/id6670401856)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polytropic Pro free?

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

### Is Hanna Pool free?

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

### Do Polytropic Pro or Hanna Pool have ads?

Neither Polytropic Pro nor Hanna Pool 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.*