QuietCool Smart Control vs Optimal°
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QuietCool Smart Control
Manage your QuietCool attic fans remotely. Adjust fan speed, set run times, and monitor attic temperature and humidity. Utilize Smart Mode for automated adjustments and create custom presets for effortless control. View detailed analytics on fan performance and environmental conditions.
- Control fan speed
- Set fan run times
- View temperature and humidity
- Enable Smart Mode
- Add custom presets
- View analytics
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The QuietCool Smart Control is the new way to control your QuietCool attic fans. - Control the speed of your attic fan - Control the length of time to run your attic fan - View the Temperature and Humidity levels inside your attic - Enable Smart Mode for automatic speed changes based on attic temperatures - Add presets to your app for easy control of your attic fan - View detailed temperature, humidity, and fan runtime analytics Please note, the Smart Control app is only compatible with attic fans with a QuietCool Smart Control hub installed on your QuietCool attic fan. This will not work with a QuietCool Whole House Fan.
Optimal°
This app provides remote control and monitoring for a specific brand of tankless water heaters. Users can adjust temperature, track performance metrics, and receive diagnostic information for efficient hot water management.
- Set water heater output temperature
- Monitor unit activity state
- Track flow rate and energy consumption
- View inlet and outlet water temperatures
- Access diagnostics and error codes
- Enable Vacation Mode
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Control and Monitor your Optimal Opti Tankless Water Heater with the Optimal° connected app. Optimal° app allows you to control temperature, monitor performance and unit diagnostics, giving you full control of our hot water services. Optimal's patent pending ultrasonic flow sensors allow you to add your water heater to your smart home intelligence. Optimal° allows you to precisely customize how hot water is delivered to your faucets. Save money, be efficient and that's Optimal. Current App Version functionality. - Set water heater output temperature - Unit activity state (heating / not heating) - Gallons / min flow rate - Kilowatts per hour rate - Inlet Water Temperature - Outlet Water Temperature - Input Voltage - Available Flow Rate - Heater Capacity - Vacation Mode - Diagnostics / Error Code Reporting
Screenshots
Verdict
The clearest difference is ratings volume: QuietCool Smart Control at 15K against Optimal°'s 7. QuietCool Smart Control also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (13.0 vs 15.1). Optimal°'s advantage is review sentiment (60% vs 39%). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Optimal° holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: QuietCool Smart Control has 15K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 39% of QuietCool Smart Control's written reviews are positive against 60% of Optimal°'s.
QuietCool Smart Control ships an update every 2 months, Optimal° every 5 months. The most recent releases landed on October 15, 2026 and September 29, 2026 respectively.
| Parameter | QuietCool Smart Control | Optimal° |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (15K ratings) | 4.9 (7 ratings) — better |
| Positive reviews | 38.7% of reviews | 60.0% of reviews — better |
| Number of ratings | 15K — better | 7 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 145 MB | 19 MB |
| Age rating | 4+ | 17+ |
| Developer | QC Manufacturing, Inc | Its Optimal LLC |
Customer experience
QuietCool Smart Control
Optimal°
Bugs and requests
QuietCool Smart Control
Reported bugs
4 issues- Firmware updates breaking existing functionality
- Inconsistent behavior with temperature and humidity settings
- Inability to stay connected after pairing a new device
- App failing to recognize the fan after updates
Requested features
6 requests- Add 'Quiet' mode to turn off fan during specified hours
- Integrate with weather data or allow time-of-day control
- Provide temperature/humidity history and trending
- Enable remote monitoring and control via WiFi or internet
- Allow multiple users to control the same fan
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- Add manual override and on/off controls
Optimal°
Not enough reviews yet to summarise bugs or requests.
In-app purchases
QuietCool Smart Control
No in-app purchases
Optimal°
No in-app purchases
Questions
Is QuietCool Smart Control free?
Is Optimal° free?
Which has better reviews, QuietCool Smart Control or Optimal°?
Do QuietCool Smart Control or Optimal° have ads?
Which is updated more often, QuietCool Smart Control or Optimal°?
Other comparisons
