# PLUS+1® Service Tool vs Stoltz Calc

The clearest difference is iOS requirement: PLUS+1® Service Tool at 14.0 against Stoltz Calc's 17.6. On price, update cadence, 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.

PLUS+1® Service Tool ships an update every 4 months, Stoltz Calc every 5 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PLUS+1® Service Tool | Stoltz Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/plus-plus-1-service-tool/id1237608220/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free | — |
| Size | 57 MB | 1 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Stoltz MFG., LLC.](https://appshunter.io/developer/1791006988) |

## What reviewers say

### PLUS+1® Service Tool

[App page](https://appshunter.io/ios/app/plus-plus-1-service-tool/id1237608220)

This tool allows for diagnostics and parameter downloads to electronic components. It connects to controllers for performance logging and tuning, streamlining the development of advanced machinery.

**Highlights:** Perform diagnostics on electronic components, Download applications to controllers, Download parameters to controllers, Log controller performance, Tune controller performance, Accelerate development process

**Features:** macOS Compatibility

**In-app purchases:** none


### Stoltz Calc

[App page](https://appshunter.io/ios/app/stoltz-calc/id6740665888)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PLUS+1® Service Tool free?

PLUS+1® Service Tool is free to download, with no in-app purchases.

### Is Stoltz Calc free?

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

### Do PLUS+1® Service Tool or Stoltz Calc have ads?

Neither PLUS+1® Service Tool nor Stoltz Calc shows ads.

### Which is updated more often, PLUS+1® Service Tool or Stoltz Calc?

PLUS+1® Service Tool ships an update every 4 months, and Stoltz Calc every 5 months. Most recently, PLUS+1® Service Tool was updated on November 2, 2026 and Stoltz Calc on October 30, 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.*