Synapse vs Hello Klean
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Synapse
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1. One complete picture of risk across the globe 2. Compliance, audited and approved processes 3. Improved incident response 4. Contextual and relevant intelligence 5. Rapid and accurate communications 6. Increase the safety of your people 7. Valid case management 8. Reduced impact of threat and improved response & recovery 9. Risk-based deployment models
Hello Klean
This app works with a special shower head to monitor filter life, water temperature, and your showering habits. It provides insights into how your routine impacts your hair and skin, offering guidance for healthier results.
- Filter life tracking
- Heat alerts
- Manage refills
- Shower insights
- Hair and skin insights
- NFC connectivity
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The Hello Klean app works with Shower Head+ to track filter life, temperature, and shower habits for healthier hair and skin. Shower Head+ uses hydropower to measure real water usage and give accurate refill alerts, so filtration stays consistent. The app turns water data into simple insights to help you understand how your shower routine affects your hair and skin. Features Filter life tracking See how much water flows through your shower and know when your filter needs replacing to keep filtration working at full performance. Heat alerts Monitor hot water exposure and see how high temperatures may affect your skin barrier and hair health. Manage refills Connect your Hello Klean account to see your next delivery date or set up a Smart Refill Plan. Shower insights View average shower length, hot water time, cold exposure, and water usage to understand your routine and build better habits. Hair and skin insights Get simple guidance based on your shower data to help reduce dryness, irritation, and hair stress caused by harsh water. Hydropowered technology Shower Head+ generates its own energy from water flow. No batteries. No charging. It connects to the app via NFC. Built for better water Hello Klean creates science-backed solutions for the water you shower in, helping reduce chlorine, metals, and scale that can affect skin, hair, and scalp. The app helps keep filtration consistent, your routine balanced, and your water working the way it should. Requires Hello Klean Shower Head+
Screenshots
Verdict
The clearest difference is update cadence: Hello Klean at every 5 weeks against Synapse's every 7 months. Synapse's advantage is iOS requirement (12.1 vs 18.5). On price, ads, in-app purchases and device support 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.
Synapse ships an update every 7 months, Hello Klean every 5 weeks. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | Synapse | Hello Klean |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 7 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.1 — better | 18.5 |
| Further details — not scored | ||
| Size | 78 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Zinc Digital | Helloklean Ltd. |
In-app purchases
Synapse
No in-app purchases
Hello Klean
No in-app purchases









