Comparison

Lokni vs Kartička

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

Head to head
About

Lokni

This app provides access to filtered and purified drinking water from smart dispensers, offering a healthier and more eco-friendly alternative to bottled water. Users can easily draw water by scanning a QR code generated within the application.

Highlights
  • Environmental protection
  • Advanced water filtration
  • Cost savings
  • QR code access
  • Network of smart dispensers
  • Regular maintenance
Features
Read full description

Why Lokni? You are protecting the environment We have already managed to ease our planet of millions of PET bottles. By filling your own bottle with water, you help Nature. Better than tap water Our filtration removes chlorine, undesired smells and impurities (bigger than 0.2 micron), pesticides, hormonal contraceptives and remains of medicaments. The Lokni UVC LED light rids the water of microorganisms. Cheaper than bottled water Apart from Nature you also save your money. With us you can get your water for a fraction of the price of bottled water. Tested Lokni filtration is approved by the Faculty of Pharmacy of the Charles University in Hradec Králové as well as by the National Institute of Public Health. Water in motion Lokni is directly connected to the water mains and the water does not stay there. 100% care We take good care of the Lokni network. We change the filters regularly and sanitize the devices. Czech technology Lokni has connected water, ecology and modern filtration. How to draw water? You download the LOKNI application, register yourself and choose your tariff. Having opened the application, you will get the QR code that you will enter to the LOKNI scanner and you can immediately draw water. How to insert the phone? https://www.youtube.com/watch?v=7maBrKafzX4 LOKNI – healthy alternative to the bottled water LOKNI is an ESG project which protects the environment and the health of people. It is an ecological alternative to bottled water, which decreases the amount of plastic. It is a simple idea. Provided that somebody has got a reliable and trustworthy resource of excellent water at hand, they draw this water into their own bottle and do not buy a PET bottle. Free thanks to the partners of the project LOKNI is a network of smart filtration water dispensers at more than 50 faculties of Czech universities. It is the partners of the project who most often contribute to the price of the water for students. They are doing good and in return for that they get their space on the LCD of the LOKNI devices and in the banners of the application. At the moment LOKNI is within the reach of about 150 thousand students and the total of the savings of the PET bottles (0.5 l) is about 300,000 bottles per month. SDGs Awards LOKNI got to the semi-finals in the category Circular Economy (2022). In 2019 it got among the TOP 15 for achieving the global aims. LOKNI has been the member of the Association of Social Responsibility since October 2022. More: https://cc.cz/filtrovana-voda-startupu-lokni-chce-vytlacit-jednorazove-pet-lahve-chysta-se-i-do-verejneho-prostoru/

About

Kartička

This loyalty app helps you collect stamps, coupons, and points at your favorite establishments. Enjoy exclusive discounts, cashback offers, and make reservations. Stay updated with notifications about your loyalty program.

Highlights
  • Stamp collection
  • Digital coupons
  • Exclusive discounts
  • Cashback rewards
  • Point accumulation
  • Reservations
  • Notifications
Features
Read full description

Kartička - věrnostní aplikace pro tvůj oblíbený podnik. - razítka (např. káva 10+1) - kupóny - slevy - cashback - vouchery - sbírání bodů za nákupy - rezervace - notifikace - QR objednávky od stolu Vyzkoušejte Kartičku ještě dnes.

Screenshots

Lokni4 screens
Kartička4 screens

Verdict

The call

The clearest difference is update cadence: Kartička at every 3 weeks against Lokni's every 3 months. On price, rating, ratings volume and ads 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Lokni against 5.0 for Kartička. Both are backed by a comparable volume of ratings — 10 and 4 respectively.

UpkeepUpdate frequency

Lokni ships an update every 3 months, Kartička every 3 weeks. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

Scorecard1 real difference · 9 level
Lokni versus Kartička: the parameters behind the verdict, then further details
ParameterLokniKartička
PriceFreeFree
Rating5.0 (10 ratings)5.0 (4 ratings)
Positive reviews35.7% of reviews
Number of ratings10 — better4
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size93 MB41 MB
Age rating4+12+
DeveloperLOKNI s.r.o.Kartička s.r.o

Customer experience

Lokni

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews42 reviews
Positive35.7%
Neutral11.9%
Negative52.4%

Kartička

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Lokni

No in-app purchases

None

Kartička

No in-app purchases

Questions

Is Lokni free?
Lokni is free to download, with no in-app purchases.
Is Kartička free?
Kartička is free to download, with no in-app purchases.
Which has better reviews, Lokni or Kartička?
Lokni and Kartička are both rated 5.0 out of 5 on the App Store, from 10 and 4 ratings respectively.
Do Lokni or Kartička have ads?
Neither Lokni nor Kartička shows ads.
Which is updated more often, Lokni or Kartička?
Lokni ships an update every 3 months, and Kartička every 3 weeks. Most recently, Lokni was updated on September 9, 2026 and Kartička on September 10, 2026.

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