# BTSConnect vs Process Engineer Calc

The clearest difference is update cadence: Process Engineer Calc at every 10 days against BTSConnect's every 3 months. BTSConnect's advantage is device support (3 vs 1) and iOS requirement (15.5 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BTSConnect ships an update every 3 months, Process Engineer Calc every 10 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | BTSConnect | Process Engineer Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 98 MB | 11 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BTS Druckkompetenz GmbH](https://appshunter.io/developer/1649506236) | [冯泰 蔡](https://appshunter.io/developer/1896641064) |

## What reviewers say

### BTSConnect

[App page](https://appshunter.io/ios/app/btsconnect/id6443811578)

**In-app purchases:** none


### Process Engineer Calc

[App page](https://appshunter.io/ios/app/process-engineer-calc-lms/id6774295442)

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

**In-app purchases:** none


## Frequently asked questions

### Is BTSConnect free?

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

### Is Process Engineer Calc free?

Process Engineer Calc is free to download, with no in-app purchases.

### Do BTSConnect or Process Engineer Calc have ads?

Neither BTSConnect nor Process Engineer Calc shows ads.

### Which is updated more often, BTSConnect or Process Engineer Calc?

BTSConnect ships an update every 3 months, and Process Engineer Calc every 10 days. Most recently, BTSConnect was updated on October 27, 2026 and Process Engineer Calc on October 25, 2026.

---

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