Comparison

Water vs TapFocus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Water

Features
Read full description

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.

About

TapFocus

Features
Read full description

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 — 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 — and harder to break. Tap. Scan. Focus.

Screenshots

Water4 screens
TapFocus2 screens

Verdict

The call

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. TapFocus sells 1 one-off in-app purchase. Water asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard4 real differences Ā· 2 level
Water versus TapFocus: the parameters behind the verdict, then further details
ParameterWaterTapFocus
PriceFreeFree
Update frequencyEvery 59 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size1 MB4 MB
Age rating17+4+
DeveloperBjarne BergeMatthew Davies

In-app purchases

None

Water

No in-app purchases

1 purchases

TapFocus

One-time1
  • Lifetime Access$9.99

Questions

Is Water free?
Water is free to download, with no in-app purchases.
Is TapFocus free?
TapFocus is free to download, with in-app purchases available.
Do Water or TapFocus have ads?
Neither Water nor TapFocus shows ads.
Which is updated more often, Water or TapFocus?
Water ships an update every 59 months, and TapFocus every 2 days. Most recently, Water was updated on October 27, 2026 and TapFocus on October 20, 2026.

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