Comparison

Hello Klean vs Smart

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

Head to head
About

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.

Highlights
  • Filter life tracking
  • Heat alerts
  • Manage refills
  • Shower insights
  • Hair and skin insights
  • NFC connectivity
Read full description

The Hello Klean app works with Shower Head+ and Skin Filter to track filter life and water consumption – with Shower Head+ also tracking temperature – for healthier hair and skin. Shower Head+ and Skin Filter use hydropowered technology 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 and cleansing routine affect your hair and skin. Features Filter life tracking See how much water flows through your shower or tap and know when your filter needs replacing to keep filtration working at full performance. Heat alerts (Shower Head+ only) 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 or rinsing length and water usage, as well as hot water time and cold exposure for Shower Head+, to understand your routine and build better habits. Hair and skin insights Get simple guidance based on your data to help reduce dryness, irritation, and hair stress caused by harsh water. Hydropowered technology Shower Head+ and Skin Filter generate their own energy from water flow. No batteries. No charging. They connect to the app via NFC. Built for better water Hello Klean creates science-backed solutions for the water your shower in and cleanse with, helping reduce chlorine, metals, and scale that can affect skin, hair, and scalp health. The app helps keep filtration consistent, your routine balance, and your water working the way it should. Requires Hello Klean Shower Head+ or Skin Filter.

About

Smart

Read full description

Smart‑Pocket is your all‑in‑one utility suite to focus, discover, and create — packed with smart tools for everyday life and productivity. Core tools include: Pomodoro Timer, Notes, To‑Do, and Password Generator Currency, Weather, World Clock, and Unit Converter Calculator, Tip Calculator, and Mortgage Overpayment Voice Recorder, Image to Text (OCR), Image to SVG, and Background Remover Movie Watchlist + Movie Player, QR Tools, Compass, Battery Info, Ruler Quick Translator, Wi‑Fi Scanner, Crypto tracker, and more Now with refined navigation, modern themes, and faster access to your most‑used tools, Smart‑Pocket keeps everything you need in one place.

Screenshots

Hello Klean4 screens
Smart4 screens

Verdict

The call

The clearest difference is price: Hello Klean at Free against Smart's $2.99. Smart's advantage is update cadence (weekly vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Hello Klean is free to download; Smart costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hello Klean ships an update every 6 weeks, Smart weekly. Both last shipped on October 30, 2026.

Scorecard2 real differences · 8 level
Hello Klean versus Smart: the parameters behind the verdict, then further details
ParameterHello KleanSmart
PriceFree — better$2.99
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.518.5
Further details — not scored
Size14 MB8 MB
Age rating4+4+
DeveloperHelloklean Ltd.Waqar Chaudhry

In-app purchases

None

Hello Klean

No in-app purchases

None

Smart

No in-app purchases

Questions

Is Hello Klean free?
Hello Klean is free to download, with no in-app purchases.
Is Smart free?
Smart costs $2.99, with no in-app purchases.
Do Hello Klean or Smart have ads?
Neither Hello Klean nor Smart shows ads.
Which is updated more often, Hello Klean or Smart?
Hello Klean ships an update every 6 weeks, and Smart weekly. Most recently, Hello Klean was updated on October 30, 2026 and Smart on October 30, 2026.

Other comparisons