# JBC B.IRON vs RigMaster

The clearest difference is in-app purchases: JBC B.IRON at none against RigMaster's 4. JBC B.IRON also leads on ads (none vs shown) and iOS requirement (13.4 vs 17.0). RigMaster's advantage is update cadence (every 11 days vs every 10 months). On price and device support there is nothing between them.

Both are free to download. RigMaster sells 4 in-app purchases, starting at $0.99 per 7 days. JBC B.IRON asks for nothing beyond the download.

JBC B.IRON ships an update every 10 months, RigMaster every 11 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JBC B.IRON | RigMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 11 days** |
| Size | 22 MB | 5 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JBC Soldering](https://appshunter.io/developer/1633983292) | [Grima Hdez](https://appshunter.io/developer/1741481582) |

## What reviewers say

### JBC B.IRON

[App page](https://appshunter.io/ios/app/jbc-biron/id1633983290)

**Features:** macOS Compatibility

**In-app purchases:** none


### RigMaster

[App page](https://appshunter.io/ios/app/rigmaster-rigging-calculator/id6789944360)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $0.99 | per 7 days |
| RigMaster Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |
| RigMaster Pro | $39.99 | one-time |


## Frequently asked questions

### Is JBC B.IRON free?

JBC B.IRON is free to download, with no in-app purchases.

### Is RigMaster free?

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

### Do JBC B.IRON or RigMaster have ads?

RigMaster shows ads; JBC B.IRON does not.

### Which is updated more often, JBC B.IRON or RigMaster?

JBC B.IRON ships an update every 10 months, and RigMaster every 11 days. Most recently, JBC B.IRON was updated on October 6, 2026 and RigMaster on October 24, 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.*