O2 aplikácia vs Congressa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
O2 aplikácia
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.
- 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
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Vďaka O2 Aplikácii máte svoju spotrebu vždy pod kontrolou, vybavíte si nový paušál či SIM kartu, založíte si skupinu O2 Spolu plnú výhod, uhradíte faktúry alebo získate milé prekvapenia. Byť v skupine O2 Spolu sa oplatí. Čím viac programov v skupine si spojíte, tým viac benefitov si spoločne môžete užívať. Môžete získať finančnú odmenu až 10 € mesačne, dáta navyše pre všetkých členov po prečerpaní predplatených dát alebo aj dáta navyše aj mimo EÚ. A O2 Prekvapenia majú všetci členovia výhodnejšie. S novou službou O2 Connect môžete zdieľať dáta, volania a SMS/MMS z vášho paušálu aj s ďalšími smart zariadeniami, napríklad tabletom či smart hodinkami. A ak potrebujete vyriešiť niečo zložitejšie, jednoducho sa spojíte s našou podporou cez chat priamo v aplikácií. Čo vybavíte v aplikácií? - kontrolujete svoju aktuálnu spotrebu - vyberiete si, ako chcete dostávať oznamy – SMS alebo push notifikácie - vytvoríte a spravujete skupinu O2 Spolu - aktivujete, deaktivujete alebo upravíte balíky a služby - aktivujete službu O2 Connect a spravujete svoje zariadenia - uhradíte faktúry alebo dobijete kredit (kartou alebo cez Google Pay) - bezplatne kontaktujete našu podporu cez chat - vybavíte svojim deťom SIM kartu O2 Junior a máte ich používanie pod kontrolou - aktivujete O2 Cestovné poistenie - tešíte sa z Prekvapení každý týždeň O2 Paušál so SIM odteraz kúpite digitálne cez aplikáciu bez toho, aby ste museli niekam chodiť. Vybavte si ho odteraz pár klikmi, hoci aj v autobuse. S detskou SIM kartou O2 Junior máte bezpečnosť svojich detí na internete pod kontrolou. Pridajte ju do O2 Spolu a využívajte spoločné benefity naplno. Ste s aplikáciou spokojní? Veľmi nás poteší, ak pridáte vaše hodnotenie 5 hviezdičiek. Ak niečo nefunguje alebo sa vám niečo nepáči, napíšte nám na kontakt@o2.sk.
Congressa
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Congressa is your conference programme in your pocket. It works without internet, too. WHY IT EXISTS At conferences I carried a folded paper programme in my jacket and unfolded it at every break to check when my talk was and in which room. I wanted the phone to tell me what is on now, what comes next and where to go, even in a congress hall with no signal. A SIMPLE START 1. Get the programme. Scan the QR code from the organiser or a colleague, paste the programme link, enter the conference website or open the PDF. Your name and an access code are optional. 2. For a programme from a website or PDF, check the recognised days, times and item types (lecture, posters, lunch, break, social programme). Fix anything with a tap. 3. That is it. The programme stays on your phone and the reminders are local: what, when and where, always before it starts. WHAT THE APP DOES • NOW – what is on right now, what comes next and your own next item. • PROGRAMME by day, with talks and posters inside their blocks, authors and paper codes. • MY PLAN – star what you do not want to miss; the app warns you about clashes. • I'M IN THE PROGRAMME – if you present, chair or guide, link yourself to your name: your slots are highlighted and reminded first. • REMINDERS BEFORE TALKS – 5, 10, 15, 30 or 60 minutes, or a time of your own from 1 minute to 12 hours before every item. You also choose what the app reminds you about. • ORGANISER ANNOUNCEMENTS – programme changes and important messages right in the app, when the organiser uses a server. • REGISTRATIONS for workshops, dinner or the social programme, with capacity and a waiting list, when the organiser uses a server. • SHARE BY QR CODE – show the code and a colleague has the same programme within seconds, on iPhone and on Android (more below). • SEARCH by surname finds a talk even inside a block, with or without diacritics. • PLACES with directions in Maps, speakers and contact persons with a call button. • EIGHT LANGUAGES – Slovak, Czech, English, German, French, Spanish, Italian and Ukrainian. You choose the app language yourself. • AI RECOGNITION (optional) reads even messy PDFs and websites, with your own API key or through the organiser's server. SHARING BETWEEN IPHONE AND ANDROID The QR code or invitation link from Congressa opens a small web page that takes care of the rest. If your colleague has the app, the programme opens right away. If not, the page sends an iPhone to the App Store and an Android phone to Google Play. After installing, the same programme loads by itself: automatically on Android, on iPhone with the “Paste programme link” button on the welcome screen. FOR ORGANISERS On Mac and iPad the app is also the conference back office: it imports the programme from a website, PDF, text or calendar, manages rooms, people, presentations and attendees, and publishes the programme to your own server in one click. The optional server sends push reminders, handles registrations with a waiting list and produces attendance lists. PRIVACY No account, no sign-up, no ads, no tracking. The programme and your plan stay on your device. Data leaves it only when you send it yourself: to the organiser's server that you enter, or to the AI recognition you start. If you share a programme by link, only the programme itself is uploaded to the Congressa server, without your name or plan, and it is deleted 30 days after the conference. FREE AND INDEPENDENT Congressa is an independent app and is not made by the conference organiser. It is free and unrestricted: no ads, no tracking, no locked features, no subscription. One physician builds it in his free time, and it is free so that everyone at a congress can have the programme at hand. If it helped you, you can leave an optional tip (a coffee, a lunch or a dinner). It unlocks nothing and only helps keep the app free for others. Author: Ján Šikuta. The app grew out of his own need at congresses. Contact: congressa_main@icloud.com
Screenshots
Verdict
The clearest difference is update cadence: Congressa at every 3 days against O2 aplikácia's every 2 weeks. Congressa also leads on device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
O2 aplikácia ships an update every 2 weeks, Congressa every 3 days. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.
| Parameter | O2 aplikácia | Congressa |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (185 ratings) — better | — |
| Positive reviews | 22.7% of reviews | — |
| Number of ratings | 185 — better | — |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 255 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | O2 Slovakia, s.r.o. | Jan Sikuta |
In-app purchases
O2 aplikácia
No in-app purchases
Congressa
No in-app purchases









