WaterGuru vs 3D Displayer
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.
3D Displayer
This application allows users to transfer photos and videos to an LED 3D hologram advertiser via Wi-Fi. It also enables file management, including viewing, renaming, listing, and deleting content stored on the advertiser.
- Transfer photos/videos via Wi-Fi
- View stored files on advertiser
- Control displayed content
- Manage files (rename, list, delete)
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This app is a software for LED 3D holygram advertiser. The main functions of it is: 1. User can take a photo or a video and then transfer it to advertiser by WIFI. 2. User can also view the files stored in the advertiser and control them to be displayed by advertiser. 3. User can manage the files stored in the advertiser, including rename, list and delete.
Screenshots
Verdict
The clearest difference is review sentiment: WaterGuru at 74% against 3D Displayer's 22%. WaterGuru also leads on rating (4.1 vs 1.8) and ratings volume (239 vs 13). 3D Displayer's advantage is iOS requirement (9.0 vs 15.0). On price, update cadence, 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.
WaterGuru holds the better App Store score, 4.1 against 1.8. That said, the two scores are not equally well evidenced: WaterGuru has 239 ratings behind it against 13, 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 22% of 3D Displayer's.
WaterGuru ships an update every 4 weeks, 3D Displayer every 3 weeks. Both last shipped on November 2, 2026.
| Parameter | WaterGuru | 3D Displayer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (239 ratings) — better | 1.8 (13 ratings) |
| Positive reviews | 73.8% of reviews — better | 22.2% of reviews |
| Number of ratings | 239 — better | 13 |
| Update frequency | Every 4 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 155 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | WaterGuru, Inc | Shenzhen Feitianxia Technology Co, Ltd. |
Customer experience
WaterGuru
3D Displayer
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
3D Displayer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WaterGuru
No in-app purchases
3D Displayer
No in-app purchases
