# AmpSet Blue vs WelderCalc

The clearest difference is in-app purchases: AmpSet Blue at none against WelderCalc's 4. AmpSet Blue also leads on iOS requirement (8.0 vs 16.0). WelderCalc's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. WelderCalc sells 4 in-app purchases, starting at $1.99 per month. AmpSet Blue asks for nothing beyond the download.

AmpSet Blue ships an update every 2 months, WelderCalc every 4 days. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AmpSet Blue | WelderCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ampset-blue/id829199050/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sun Hydraulics Corporation](https://appshunter.io/developer/958574432) | [Double Vision USA LLC](https://appshunter.io/developer/1894678139) |

## What reviewers say

### AmpSet Blue

[App page](https://appshunter.io/ios/app/ampset-blue/id829199050)

Configure Sun's Bluetooth Embedded Amplifiers wirelessly using your iOS device. This app allows for on-site tuning of electro-proportional cartridges with an intuitive interface and smart prompts. Save configuration files or email them for backup and reuse.

**Highlights:** Wireless Bluetooth configuration, Configure electro-proportional cartridges, On-site tuning, Save and email configuration files, Intuitive interface with smart prompts, Supports iPad, iPhone, and iPod

**In-app purchases:** none


### WelderCalc

[App page](https://appshunter.io/ios/app/weldercalc-welding-calculator/id6763315264)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $9.99 | per year |
| Pro Unlock | $24.99 | one-time |
| Fab Shop Bundle | $139.99 | one-time |


## Frequently asked questions

### Is AmpSet Blue free?

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

### Is WelderCalc free?

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

### Do AmpSet Blue or WelderCalc have ads?

Neither AmpSet Blue nor WelderCalc shows ads.

### Which is updated more often, AmpSet Blue or WelderCalc?

AmpSet Blue ships an update every 2 months, and WelderCalc every 4 days. Most recently, AmpSet Blue was updated on October 9, 2026 and WelderCalc on October 25, 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.*