# Ref Tools vs KROHNE PICK Mobile

The clearest difference is update cadence: Ref Tools at every 5 weeks against KROHNE PICK Mobile's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Ref Tools ships an update every 5 weeks, KROHNE PICK Mobile every 2 months. The most recent releases landed on October 21, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Ref Tools | KROHNE PICK Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (52 ratings)](https://appshunter.io/ios/app/ref-tools/id472312541/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 57.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 98 MB | 89 MB |
| Requires iOS | 15.0 | **14.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) |

## What reviewers say

### Ref Tools

[App page](https://appshunter.io/ios/app/ref-tools/id472312541)

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

**Highlights:** Refrigerant Slider for P/T calculations, Solenoid valve coil testing tool, Refrigeration system troubleshooting guide, Product data finder, Spare parts ordering, Low-GWP refrigerant comparison, TXV Superheat optimization, Educational podcasts

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

**In-app purchases:** none

**What reviewers like**

- 👍 Useful tool for HVAC/R techs
- 👍 Great idea for an app
- 👍 Best refrigeration and hvac app
- 👍 Useful App for HVACR
- 👍 Brilliant app

**What reviewers complain about**

- 🐛 Crashes instantly on launch
- 🐛 App won’t open on iPhone
- 🐛 Flashes up and disappears
- 🐛 Cannot open app
- 🐛 Immediately shuts off

**Reported bugs**

- CRASHED instantly on Mac Mini M4
- App won’t open on iPhone
- App flashes up and disappears
- Cannot open app
- Immediately shuts off since recent release

**Requested features**

- More residential AC information
- Troubleshooter for Residential & Commercial
- Add SP22 refrigerant
- Add R-11 refrigerant
- Add R-123 range down to 40 degrees


### KROHNE PICK Mobile

[App page](https://appshunter.io/ios/app/krohne-pick-mobile/id1661952103)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ref Tools free?

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

### Is KROHNE PICK Mobile free?

KROHNE PICK Mobile is free to download, with no in-app purchases.

### Do Ref Tools or KROHNE PICK Mobile have ads?

Neither Ref Tools nor KROHNE PICK Mobile shows ads.

### Which is updated more often, Ref Tools or KROHNE PICK Mobile?

Ref Tools ships an update every 5 weeks, and KROHNE PICK Mobile every 2 months. Most recently, Ref Tools was updated on October 21, 2026 and KROHNE PICK Mobile on October 4, 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.*