ProximiKey vs Hydraloop
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
ProximiKey
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ProximiKey is a digital key solution that enables you to use your Iphone as a key to the locks. ProximiKey is safe, easy and convenient to use and if needed, the access can be shared with friends and family You can have up to 4 locks connected to the app. The solution is powered by NFC tehnology and does not require any additional Iphone settings. The app does not require any user creation with email etc. and ProximiKey will never collect any personal information. ProximiKey is for everyone who wants to replace one or more physical keys in their keybundle.
Hydraloop
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Take control of your water management with the Hydraloop app, designed to make water saving effortless and smart. This app connects seamlessly to your Hydraloop water recycling system β a groundbreaking solution that recycles greywater from showers, baths, and washing machines for reuse in toilet flushing, laundry, irrigation, and more. The Hydraloop app allows you to monitor your systemβs performance 24/7 in real time and track your water savings daily, weekly, or monthly. You can view your water recycling history and usage statistics, enabling a deeper understanding of your impact. The app also includes a bypass mode for special cases, such as when using hair dye or bleach, and sends notifications when recycled water becomes available. Additionally, youβll receive alerts about your deviceβs status and any required maintenance. With IoT integration, the Hydraloop app delivers personalized tips and real-time updates, ensuring optimal efficiency without compromising comfort. Join the future of smart water management today!
Screenshots
Verdict
The clearest difference is update cadence: Hydraloop at monthly against ProximiKey's every 13 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ProximiKey ships an update every 13 months, Hydraloop monthly. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.
| Parameter | ProximiKey | Hydraloop |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 13 months | Monthly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details β not scored | ||
| Size | 18 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | ProximiKey Aps | Hydraloop Systems bv |
In-app purchases
ProximiKey
No in-app purchases
Hydraloop
No in-app purchases









