FRR vs Optimal°
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FRR
This app facilitates communication between first responders and their families during large-scale emergency deployments. It serves as a vital link for agencies to keep families informed when emergency workers are away.
- Family communication during deployments
- Agency-to-family updates
- Information sharing for emergency workers
- Support for first responder families
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The Palm Beach County Fire Rescue Family Relief & Recovery App (FRR) is a communication tool used by first responders and their agencies to be able to communicate with first responder families while emergency workers are deployed on a large scale incident.
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 rating: Optimal° at 4.9 against FRR's 4.0. FRR's advantage is iOS requirement (13.0 vs 15.1). On price, ratings volume, update cadence and ads 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 4.0. Both are backed by a comparable volume of ratings — 4 and 7 respectively.
FRR ships an update every 2 months, Optimal° every 5 months. Both last shipped on June 1, 2026.
| Parameter | FRR | Optimal° |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 4.9 (7 ratings) — better |
| Positive reviews | — | 60.0% of reviews |
| Number of ratings | 4 | 7 — better |
| 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 | 42 MB | 19 MB |
| Age rating | 4+ | 17+ |
| Developer | County of Palm Beach | Its Optimal LLC |
Customer experience
FRR
Optimal°
In-app purchases
FRR
No in-app purchases
Optimal°
No in-app purchases
