# Daikin Service vs BTU Calculator

The clearest difference is rating: BTU Calculator at 4.6 against Daikin Service's 3.6. BTU Calculator also leads on ratings volume (319 vs 11) and review sentiment (69% vs 51%). Daikin Service's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. BTU Calculator sells 1 one-off in-app purchase. Daikin Service asks for nothing beyond the download.

BTU Calculator holds the better App Store score, 4.6 against 3.6. That said, the two scores are not equally well evidenced: BTU Calculator has 319 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 51% of Daikin Service's written reviews are positive against 69% of BTU Calculator's.

Daikin Service ships an update monthly, BTU Calculator every 4 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Daikin Service | BTU Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (11 ratings)](https://appshunter.io/ios/app/daikin-service/id571282882/reviews) | **[4.6 (319 ratings)](https://appshunter.io/ios/app/btu-calculator-data-centers/id685976218/reviews)** |
| Number of ratings | 11 | **319** |
| Positive reviews | 50.9% of reviews | **68.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 111 MB | 23 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daikin Airconditioning UK Ltd](https://appshunter.io/developer/482466505) | [Cristinel Bontas](https://appshunter.io/developer/645866051) |

## What reviewers say

### Daikin Service

[App page](https://appshunter.io/ios/app/daikin-service/id571282882)

This app assists service engineers in the air conditioning industry with Daikin VRV, Altherma, Split, and Sky Air equipment. It provides tools for fault finding, including fault codes, refrigerant calculations, and diagnostic checks. The application also supports outdoor unit settings and operational procedures.

**Highlights:** Fault code lookup, Additional charge calculations, PCB dip switch settings, Pressure and temperature checks, Outdoor unit field settings, Refrigerant recovery settings, Emergency modes

**Features:** macOS Compatibility

**In-app purchases:** none


### BTU Calculator

[App page](https://appshunter.io/ios/app/btu-calculator-data-centers/id685976218)

Estimate the cooling capacity needed for your data center. This tool considers factors like space, occupants, and heat output to help you maintain optimal temperature and humidity. It provides instant results as you update inputs, serving as a guide for system selection.

**Highlights:** Estimate cooling capacity, Maintain 24°C and 30-50% humidity, Consider space, occupants, window R-value, Calculate total heat output, Instant cooling load results, Guide for system selection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Daikin Service free?

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

### Is BTU Calculator free?

BTU Calculator is free to download, with in-app purchases available.

### Which has better reviews, Daikin Service or BTU Calculator?

BTU Calculator is rated higher. Daikin Service averages 3.6 out of 5 from 11 ratings, while BTU Calculator averages 4.6 from 319 ratings.

### Do Daikin Service or BTU Calculator have ads?

BTU Calculator shows ads; Daikin Service does not.

### Which is updated more often, Daikin Service or BTU Calculator?

Daikin Service ships an update monthly, and BTU Calculator every 4 months. Most recently, Daikin Service was updated on November 1, 2026 and BTU Calculator on November 6, 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.*