# Calculate Comfort vs Sysnet Bluetooth

The clearest difference is in-app purchases: Sysnet Bluetooth at none against Calculate Comfort's 1. Sysnet Bluetooth also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). On price and iOS requirement there is nothing between them.

Both are free to download. Calculate Comfort sells 1 one-off in-app purchase. Sysnet Bluetooth asks for nothing beyond the download.

Calculate Comfort ships an update every 4 months, Sysnet Bluetooth every 2 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Calculate Comfort | Sysnet Bluetooth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (35 ratings)](https://appshunter.io/ios/app/calculate-comfort/id605648449/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 96 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JUN KANAYAMA](https://appshunter.io/developer/605648452) | [Systronics Co.,Ltd](https://appshunter.io/developer/1829336160) |

## What reviewers say

### Calculate Comfort

[App page](https://appshunter.io/ios/app/calculate-comfort/id605648449)

This app analyzes atmospheric conditions by calculating various air properties like relative humidity, dew point, and enthalpy. It provides visual indicators for comfort levels and allows for easy adjustment of input values using a dial. Advanced features include weather data fetching and unit conversions.

**Highlights:** Calculates RH, Dew Point, Wet-Bulb Temp, Enthalpy, and more, Visual comfort indicators with color and emoji, Adjustable atmospheric pressure input, Switchable between Discomfort Index (DI) and WBGT, Automatic weather data fetching, Unit conversion between SI and US units (Pro), Export calculation results as text (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $7.99 | one-time |


### Sysnet Bluetooth

[App page](https://appshunter.io/ios/app/sysnet-bluetooth/id6771653389)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculate Comfort free?

Calculate Comfort is free to download, with in-app purchases available.

### Is Sysnet Bluetooth free?

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

### Do Calculate Comfort or Sysnet Bluetooth have ads?

Calculate Comfort shows ads; Sysnet Bluetooth does not.

### Which is updated more often, Calculate Comfort or Sysnet Bluetooth?

Calculate Comfort ships an update every 4 months, and Sysnet Bluetooth every 2 weeks. Most recently, Calculate Comfort was updated on October 15, 2026 and Sysnet Bluetooth on October 3, 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.*