# VRF & Mini vs Mostat

The clearest difference is review sentiment: Mostat at 100% against VRF & Mini's 20%. Mostat also leads on rating (5.0 vs 3.1) and update cadence (monthly vs every 7 months). VRF & Mini's advantage is ratings volume (15 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Mostat holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 15 and 5 respectively. Written reviews point the same way: 20% of VRF & Mini's written reviews are positive against 100% of Mostat's.

VRF & Mini ships an update every 7 months, Mostat monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | VRF & Mini | Mostat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (15 ratings)](https://appshunter.io/ios/app/vrf-and-mini-splits/id916090359/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/mostat/id1198265868/reviews)** |
| Number of ratings | **15** | 5 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Free | Free |
| Size | 5 MB | 14 MB |
| Requires iOS | 18.5 | **13.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [Picktek LLC](https://appshunter.io/developer/627880736) |

## What reviewers say

### VRF & Mini

[App page](https://appshunter.io/ios/app/vrf-and-mini-splits/id916090359)

Access essential technical information for HVAC systems, including VRF and Mini-Splits. Find how-to videos, manuals, error code lookups, and troubleshooting guides to streamline service calls.

**Highlights:** How-to videos, Technical literature access, Error code lookup, Troubleshooting guides, Refrigerant charge calculation, Service reference materials

**Features:** Vision Pro support

**In-app purchases:** none


### Mostat

[App page](https://appshunter.io/ios/app/mostat/id1198265868)

Remotely control your home heating system to reduce energy costs. Monitor consumption with detailed charts and optimize your schedule for maximum savings. Receive service alerts and reminders for your equipment.

**Highlights:** Remote boiler control, Temperature and comfort settings, Service alerts and reminders, Detailed heating statistics, Energy consumption tracking, Heating schedule optimization, Wireless installation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VRF & Mini free?

VRF & Mini is free to download, with no in-app purchases.

### Is Mostat free?

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

### Which has better reviews, VRF & Mini or Mostat?

Mostat is rated higher. VRF & Mini averages 3.1 out of 5 from 15 ratings, while Mostat averages 5.0 from 5 ratings.

### Do VRF & Mini or Mostat have ads?

Neither VRF & Mini nor Mostat shows ads.

### Which is updated more often, VRF & Mini or Mostat?

VRF & Mini ships an update every 7 months, and Mostat monthly. Most recently, VRF & Mini was updated on October 24, 2026 and Mostat on October 24, 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.*