Water vs TapFocus
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Water
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Knowing the water content of natural gases is essential to the design and operation of production, dehydration, and transmission systems. Water may condense in production and gathering systems. Condensed water may form water slugs which will tend to decrease flow efficiency and increase the pressure drop in a line. Presence of free water in pipeline systems may also cause corrosion. If carbon dioxide and/or hydrogen sulphide are present, the gases may form carbonic acid and sulphurous acid respectively if dissolved in water. Water content calculations are based on a method developed by Campbell. The method applies the standard physical chemistry equations and the Eykman Molecular Refraction (EMR) combination rules. For water content calculations the approach here uses fugacity coefficient as one of the key factors.
TapFocus
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Block distracting apps, then unlock them with a real-world key. TapFocus makes focus physical. Instead of relying on willpower alone, you can turn an NFC tag, QR code, or barcode into a Focus Key ā a small real-world step between you and your most distracting apps. Place a Focus Key on your desk, by your bed, across the room, or anywhere you want to create intentional friction. Start a focus session, block the apps you choose, and unlock again when you scan your key. Use an NFC tag for a simple tap-to-unlock ritual, print a QR code for a low-cost setup, or scan a barcode on an object you already own. No special hardware required. Build your own focus system ⢠Block distracting apps during focus sessions ⢠Unlock with NFC tags, QR codes, or barcodes ⢠Create Focus Keys for different routines ⢠Put your unlock key across the room, at your desk, or away from your bed ⢠Build simple rituals for work, studying, sleep, reading, or deep focus ⢠Add intentional friction before you open distracting apps Useful for ⢠Staying off social media while working ⢠Keeping your phone away from bed ⢠Reducing impulsive app checking ⢠Creating a DIY focus setup with NFC tags ⢠Printing QR keys for rooms, notebooks, or desks TapFocus is not another focus timer. It is a physical ritual that makes focus easier to start ā and harder to break. Tap. Scan. Focus.
Screenshots
Verdict
The clearest difference is in-app purchases: Water at none against TapFocus's 1. Water also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). TapFocus's advantage is update cadence (every 2 days vs every 59 months). On price and ads there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. TapFocus sells 1 one-off in-app purchase. Water asks for nothing beyond the download.
Water ships an update every 59 months, TapFocus every 2 days. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.
| Parameter | Water | TapFocus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 59 months | Every 2 days ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone |
| Requires iOS | 15.6 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Bjarne Berge | Matthew Davies |
In-app purchases
Water
No in-app purchases
TapFocus
- Lifetime Access$9.99









