# HyTune vs Pipefitter Calculator (e4bc01)

The clearest difference is in-app purchases: HyTune at none against Pipefitter Calculator (e4bc01)'s 2. HyTune also leads on ads (none vs shown) and update cadence (every 9 days vs every 4 weeks). Pipefitter Calculator (e4bc01)'s advantage is iOS requirement (15.1 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Pipefitter Calculator (e4bc01) sells 2 in-app purchases, starting at $4.99 per month. HyTune asks for nothing beyond the download.

HyTune ships an update every 9 days, Pipefitter Calculator (e4bc01) every 4 weeks. The most recent releases landed on August 25, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | HyTune | Pipefitter Calculator (e4bc01) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 4 weeks |
| Size | 193 MB | 50 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IMI Hydronic Engineering International SA](https://appshunter.io/developer/508015425) | [Justin Walls](https://appshunter.io/developer/6782460947) |

## What reviewers say

### HyTune

[App page](https://appshunter.io/ios/app/hytune/id1053462919)

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

**In-app purchases:** none


### Pipefitter Calculator (e4bc01)

[App page](https://appshunter.io/ios/app/pipefitter-calculator-e4bc01/id6782460945)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipefitter Pro | $4.99 | per month |
| Remove Ads Forever | $9.99 | one-time |


## Frequently asked questions

### Is HyTune free?

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

### Is Pipefitter Calculator (e4bc01) free?

Pipefitter Calculator (e4bc01) is free to download, with in-app purchases available.

### Do HyTune or Pipefitter Calculator (e4bc01) have ads?

Pipefitter Calculator (e4bc01) shows ads; HyTune does not.

### Which is updated more often, HyTune or Pipefitter Calculator (e4bc01)?

HyTune ships an update every 9 days, and Pipefitter Calculator (e4bc01) every 4 weeks. Most recently, HyTune was updated on August 25, 2026 and Pipefitter Calculator (e4bc01) on September 19, 2026.

---

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