# Heating Pipe Size vs Stress Strain Calculator

The clearest difference is price: Stress Strain Calculator at $2.99 against Heating Pipe Size's $5.99. Stress Strain Calculator also leads on iOS requirement (13 vs 26.0). Heating Pipe Size's advantage is update cadence (every 15 months vs every 31 months). On ads, in-app purchases and device support there is nothing between them.

Heating Pipe Size costs $5.99 and Stress Strain Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Heating Pipe Size ships an update every 15 months, Stress Strain Calculator every 31 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Heating Pipe Size | Stress Strain Calculator |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 31 months |
| Size | 1 MB | 1 MB |
| Requires iOS | 26.0 | **13** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sebastjan Valic](https://appshunter.io/developer/503687385) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Heating Pipe Size

[App page](https://appshunter.io/ios/app/heating-pipe-size/id527730872)

**Features:** Vision Pro support

**In-app purchases:** none


### Stress Strain Calculator

[App page](https://appshunter.io/ios/app/stress-strain-calculator/id1407133628)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Heating Pipe Size free?

Heating Pipe Size costs $5.99, with no in-app purchases.

### Is Stress Strain Calculator free?

Stress Strain Calculator costs $2.99, with no in-app purchases.

### Do Heating Pipe Size or Stress Strain Calculator have ads?

Neither Heating Pipe Size nor Stress Strain Calculator shows ads.

### Which is updated more often, Heating Pipe Size or Stress Strain Calculator?

Heating Pipe Size ships an update every 15 months, and Stress Strain Calculator every 31 months. Most recently, Heating Pipe Size was updated on November 1, 2026 and Stress Strain Calculator on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*