# ecobee Smart Thermostat vs CoolCalc

The clearest difference is rating: CoolCalc at 5.0 against ecobee Smart Thermostat's 2.8. CoolCalc also leads on update cadence (fortnightly vs every 4 months). ecobee Smart Thermostat's advantage is in-app purchases (none vs 3) and ratings volume (25 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. CoolCalc sells 3 in-app purchases, starting at $4.99 per month. ecobee Smart Thermostat asks for nothing beyond the download.

CoolCalc holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: ecobee Smart Thermostat has 25 ratings behind it against 1, so its average is the more settled of the two.

ecobee Smart Thermostat ships an update every 4 months, CoolCalc fortnightly. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ecobee Smart Thermostat | CoolCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (25 ratings)](https://appshunter.io/ios/app/ecobee-smart-thermostat/id339159185/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coolcalc-hvac-tools/id6773545951/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 45.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 31 MB |
| Requires iOS | **4.3** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ecobee Ltd.](https://appshunter.io/developer/339159188) | [杰 陈](https://appshunter.io/developer/1746018277) |

## What reviewers say

### ecobee Smart Thermostat

[App page](https://appshunter.io/ios/app/ecobee-smart-thermostat/id339159185)

Control your home's heating, cooling, and ventilation remotely with this smart thermostat app. Adjust temperature, manage schedules, and receive alerts from anywhere, anytime. Integrates energy management and utility demand response for efficient home climate control.

**Highlights:** Remote temperature adjustment, Schedule management, Vacation event updates, System and fan settings control, Alert notifications, Energy management integration

**Features:** macOS Compatibility

**In-app purchases:** none


### CoolCalc

[App page](https://appshunter.io/ios/app/coolcalc-hvac-tools/id6773545951)

This app provides HVAC technicians with essential offline tools for field service. It includes PT charts, charge calculations, duct sizing, and diagnostic tools. Generate detailed PDF reports with job details, photos, and notes directly from your device.

**Highlights:** Offline PT chart lookup, Superheat and subcooling calculations, Duct sizing (round/rectangular), Airflow and psychrometric calculations, Diagnostic tools, PDF service report generation, Refrigerant service logging

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoolCalc Pro Monthly | $4.99 | per month |
| CoolCalc Pro Yearly | $19.99 | per year |
| CoolCalc Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is ecobee Smart Thermostat free?

ecobee Smart Thermostat is free to download, with no in-app purchases.

### Is CoolCalc free?

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

### Which has better reviews, ecobee Smart Thermostat or CoolCalc?

CoolCalc is rated higher. ecobee Smart Thermostat averages 2.8 out of 5 from 25 ratings, while CoolCalc averages 5.0 from 1 ratings.

### Do ecobee Smart Thermostat or CoolCalc have ads?

Neither ecobee Smart Thermostat nor CoolCalc shows ads.

### Which is updated more often, ecobee Smart Thermostat or CoolCalc?

ecobee Smart Thermostat ships an update every 4 months, and CoolCalc fortnightly. Most recently, ecobee Smart Thermostat was updated on November 1, 2026 and CoolCalc on November 10, 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.*