Legacy View vs Essency Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Legacy View
Monitor and control your Chandler Systems water treatment system with ease. View system settings, track water usage, and initiate cycles remotely. Connect to multiple valves from a single device and update valve firmware.
- View valve settings and status
- Change valve settings remotely
- Monitor water usage
- Initiate regeneration/backwash cycles
- Connect to multiple valves
- Update valve firmware
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Legacy View makes setting up and monitoring your Chandler Systems water treatment system easier than ever! This App covers systems sold under Chandler Systems' three brands (CSI, Clearion and WaterSoft) that use the Legacy View Valve. When used with a Legacy View Valve the user, through the app, can do the following functions: - Conveniently view all valve settings and status. - Easily change valve settings. - View current water usage information. - Graphically view water usage information. - Start a regeneration or backwash cycle from your phone or tablet. - Set / view the servicing water treatment dealer information. - Better understand how your system is working and understand what settings are for. - Connect to all of your valves in your system from one tablet or phone. - Update firmware on Bluetooth LE valves - Manage your connection to your valves. Note: This app is only compatible with Chandler Systems valves that have a revision number greater or equal to “C2.00”. These valves use Bluetooth 4.0+ (a.k.a. Bluetooth LE) to communicate and require smartphones or tablets to also have Bluetooth LE to use the features in this app. All recently manufactured Apple devices are Bluetooth LE compatible. Check your device specifications if you are unsure of it's compatibility. (The firmware revision of the valve can be viewed on the valve display for 2 seconds after the valve is powered up.)
Essency Pro
This app serves as a comprehensive digital toolbox for installers of on-demand tank water heaters. It allows users to manage the installation and connection of new units, providing direct access to all necessary instructions and information from their mobile device.
- Install new water heaters
- Connect water heaters
- Access installation instructions
- Direct information access
- Digital toolbox
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As an Essency water heater installer, this application is the only toolbox you'll ever need. - Install & connect a new water heater - Access all instructions and information directly from your phone
Screenshots
Verdict
The clearest difference is update cadence: Legacy View at every 3 weeks against Essency Pro's every 8 months. Legacy View also leads on ratings volume (4.4K vs 7). 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.
Essency Pro holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Legacy View has 4.4K ratings behind it against 7, so its average is the more settled of the two.
Legacy View ships an update every 3 weeks, Essency Pro every 8 months. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.
| Parameter | Legacy View | Essency Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (4.4K ratings) | 4.9 (7 ratings) — better |
| Positive reviews | 45.4% of reviews | — |
| Number of ratings | 4.4K — better | 7 |
| Update frequency | Every 3 weeks — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 31 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Chandler Systems, Inc. | FRANCE REDUCTEURS SA |
Customer experience
Legacy View
Essency Pro
In-app purchases
Legacy View
No in-app purchases
Essency Pro
No in-app purchases
