WaterGuru vs GFI Notify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaterGuru
This app provides comprehensive control over your pool's water chemistry. It helps maintain a safe environment by keeping out harmful contaminants and offers lab-grade analysis and treatment advice for simplified pool management.
- Pool water chemistry control
- Harmful virus and bacteria prevention
- Lab-grade analysis
- Water treatment advice
- Simplified pool management
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Get ultimate control over your pool water chemistry with WaterGuru. Keep harmful viruses and bacteria out and simplify how you manage your pool forever. Rebuilt from the ground up, the next generation app includes all features you love and more, including lab grade analysis and water treatment advice.
GFI Notify
This app alerts you via email and text within minutes of a power outage on monitored circuits. It's ideal for protecting appliances like freezers, refrigerators, and sump pumps, providing peace of mind when you're away from home.
- Detects power outages on monitored circuits
- Sends email and text notifications
- Alerts when power is restored
- Monitors 24/7/365
- Protects sensitive appliances
- Suitable for homes and RVs
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Using the GFI Notify software and hardware bundle, power outage to any monitored circuit will be detected. Notifications are sent to up to three contacts by email and text within as soon as 6 minutes of the outage. Notifications are also sent when power is restored. GFI circuits are required to be in garages, basements and many other areas of a house. Freezers, refrigerators, sump pumps and heated aquariums can be plugged into those circuits. A GFI is a very sensitive circuit breaker and can trip (lose power) for many reasons, including a close lightning storm. GFI Notify monitors those circuits 24/7/365 for power outages. When you travel or are away from home for any reason, GFI Notify will send crucial notifications within 6 minutes giving you enough time to take remedial action when there is a power outage. GFI Notify can monitor any circuit in your house or business. GFI Notify will also notify you when your entire house loses power. GFI Notify provides assurance especially to RVers when monitoring power in their home and, when they travel, to monitor power in their RV so that pets can be safe should there be a power outage.
Screenshots
Verdict
The clearest difference is rating: WaterGuru at 4.1 against GFI Notify's 3.2. WaterGuru also leads on update cadence (every 4 weeks vs every 36 months) and ratings volume (239 vs 6). GFI Notify's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model 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.
WaterGuru holds the better App Store score, 4.1 against 3.2. That said, the two scores are not equally well evidenced: WaterGuru has 239 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 74% of WaterGuru's written reviews are positive against 60% of GFI Notify's.
WaterGuru ships an update every 4 weeks, GFI Notify every 36 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | WaterGuru | GFI Notify |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (239 ratings) — better | 3.2 (6 ratings) |
| Positive reviews | 73.8% of reviews — better | 60.0% of reviews |
| Number of ratings | 239 — better | 6 |
| Update frequency | Every 4 weeks — better | Every 36 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 155 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | WaterGuru, Inc | Catherine Lewis |
Customer experience
WaterGuru
GFI Notify
Bugs and requests
WaterGuru
Reported bugs
3 issues- App notifications not working properly
- Inability to upload pool photos
- Inconsistent app performance after updates
Requested features
4 requests- Ability to set custom testing schedule
- Measure salt levels
- Provide more advice on adjusting water chemistry
- Add hourly temperature readings
GFI Notify
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WaterGuru
No in-app purchases
GFI Notify
No in-app purchases
