# O2 aplikácia vs Cellcard

The clearest difference is ads: O2 aplikácia at none against Cellcard's shown. Cellcard's advantage is ratings volume (3.3K vs 189) and device support (3 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.5 for O2 aplikácia against 4.6 for Cellcard. That said, the two scores are not equally well evidenced: Cellcard has 3.3K ratings behind it against 189, so its average is the more settled of the two. Written reviews are what separate them: 23% of O2 aplikácia's written reviews are positive against 19% of Cellcard's.

O2 aplikácia ships an update every 2 weeks, Cellcard weekly. Both last shipped on November 1, 2026.

## The numbers

| Metric | O2 aplikácia | Cellcard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (189 ratings)](https://appshunter.io/ios/app/o2-aplikacia/id778586659/reviews) | **[4.6 (3.3K ratings)](https://appshunter.io/ios/app/cellcard/id977888051/reviews)** |
| Number of ratings | 189 | **3.3K** |
| Positive reviews | **22.7% of reviews** | 18.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 261 MB | 100 MB |
| Requires iOS | 16.0 | **15.5.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [O2 Slovakia, s.r.o.](https://appshunter.io/developer/653472723) | [CAMGSM PLC.](https://appshunter.io/developer/977888050) |

## What reviewers say

### O2 aplikácia

[App page](https://appshunter.io/ios/app/o2-aplikacia/id778586659)

Manage your mobile plan, monitor usage, pay bills, and get exclusive benefits. Easily add new services, contact support via chat, and even get new SIM cards for your family.

**Highlights:** Monitor data and call usage, Pay bills and top up credit, Manage O2 Spolu groups, Get exclusive weekly surprises, Contact support via chat, Purchase new SIM cards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cellcard

[App page](https://appshunter.io/ios/app/cellcard/id977888051)

Manage your mobile account, browse and subscribe to plans, and top-up your balance with ease. Discover exclusive deals and promotions. This app offers a streamlined and intuitive way to handle all your mobile service needs.

**Highlights:** Account management, Easy plan subscriptions, Scan-to-top-up, Online top-up with multiple payment options, Scheduled top-ups, Exclusive deals and promotions

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great service
- 👍 Helpful app features
- 👍 Convenient top-up options

**What reviewers complain about**

- 🐛 App crashes and freezes
- 🐛 Slow and unresponsive app
- 🐛 Compatibility issues with newer devices
- 🔋 High data consumption
- 🔒 Security and login problems

**Reported bugs**

- App crashes on launch
- Login verification code not working
- Unable to change rate plans after top-up

**Requested features**

- Add passcode/biometric login option
- Improve international dialing instructions
- Provide usage history and expense details


## Frequently asked questions

### Is O2 aplikácia free?

O2 aplikácia is free to download, with no in-app purchases.

### Is Cellcard free?

Cellcard is free to download, with no in-app purchases.

### Which has better reviews, O2 aplikácia or Cellcard?

Cellcard is rated higher. O2 aplikácia averages 4.5 out of 5 from 189 ratings, while Cellcard averages 4.6 from 3.3K ratings.

### Do O2 aplikácia or Cellcard have ads?

Cellcard shows ads; O2 aplikácia does not.

### Which is updated more often, O2 aplikácia or Cellcard?

O2 aplikácia ships an update every 2 weeks, and Cellcard weekly. Most recently, O2 aplikácia was updated on November 1, 2026 and Cellcard on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*