# Ref Tools vs AiSBMS

The clearest difference is update cadence: AiSBMS at every 8 days against Ref Tools's every 6 weeks. 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 6 weeks, AiSBMS every 8 days. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Ref Tools | AiSBMS |
| --- | --- | --- |
| 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 6 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 98 MB | 21 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [SOFTMILE corp.](https://appshunter.io/developer/1698063078) |

## 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


### AiSBMS

[App page](https://appshunter.io/ios/app/aisbms/id6473662261)

**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 AiSBMS free?

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

### Do Ref Tools or AiSBMS have ads?

Neither Ref Tools nor AiSBMS shows ads.

### Which is updated more often, Ref Tools or AiSBMS?

Ref Tools ships an update every 6 weeks, and AiSBMS every 8 days. Most recently, Ref Tools was updated on September 19, 2026 and AiSBMS on September 13, 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.*