# AMETEK STC CrystalConnect vs RefrigCharge

The clearest difference is price: AMETEK STC CrystalConnect at Free against RefrigCharge's $7.99. AMETEK STC CrystalConnect also leads on iOS requirement (15.1 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

AMETEK STC CrystalConnect is free to download; RefrigCharge costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AMETEK STC CrystalConnect ships an update every 2 months, RefrigCharge every 6 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AMETEK STC CrystalConnect | RefrigCharge |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ametek-stc-crystalconnect/id6504881918/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AMETEK STC](https://appshunter.io/developer/1754205857) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### AMETEK STC CrystalConnect

[App page](https://appshunter.io/ios/app/ametek-stc-crystalconnect/id6504881918)

This utility app allows remote access to an XP3i Pressure gauge via Bluetooth. Users can view live readings, graph data, configure the gauge, and download log files.

**Highlights:** Bluetooth connectivity to XP3i gauge, Live readings display, Live graph visualization, Gauge configuration, DataLoggerXP log file download

**In-app purchases:** none


### RefrigCharge

[App page](https://appshunter.io/ios/app/refrigcharge/id6761541500)

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

**In-app purchases:** none


## Frequently asked questions

### Is AMETEK STC CrystalConnect free?

AMETEK STC CrystalConnect is free to download, with no in-app purchases.

### Is RefrigCharge free?

RefrigCharge costs $7.99, with no in-app purchases.

### Do AMETEK STC CrystalConnect or RefrigCharge have ads?

Neither AMETEK STC CrystalConnect nor RefrigCharge shows ads.

### Which is updated more often, AMETEK STC CrystalConnect or RefrigCharge?

AMETEK STC CrystalConnect ships an update every 2 months, and RefrigCharge every 6 weeks. Most recently, AMETEK STC CrystalConnect was updated on October 30, 2026 and RefrigCharge on October 31, 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.*