Kaktus vs Congressa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kaktus
Manage your mobile plan, track credit, and purchase data, minutes, or SMS packages. Easily top up your balance, send money to friends, and view service history. Roaming data usage is free.
- Track credit and plan usage
- Purchase data, minutes, and SMS packages
- Easy credit top-ups
- Send money to friends
- View service history
- Free roaming data usage
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Co v aplikaci najdeš a jak ti může pomoct? V přehledu služeb vidíš aktuální stav svého kreditu, čerpání jednotek z předplaceného tarifu NEŘEŠTO nebo z balíčků (Minut, SMS a Dat). Uvidíš přesně, kolik ti jednotek ještě zbývá, kdy si ti předplacený tarif obnoví, kdy si dobít kredit nebo aktivovat nový balíček. V aplikace si snadno vybereš jeden ze super předplacených tarifů NEŘEŠTO, nikam nemusíš chodit, nic podepisovat, jen připojíš svou PLATEBNÍ KARTU a tarif se sám zaplatí po 30 dnech. Nebo si jednotlivé balíčky Data, Minut, SMS namixuješ sám tak, aby ti Kaktus padnul jako ulitý. U samoobnovujících balíčků můžeš dokoupit extra data i vypnout samoobnovení. Kredit si tu snadno dobiješ, tak ti neunikne žádná naše facebooková akce, při které přidáváme kredit navíc za dobití. Pokud nechceš při každém dobíjení hledat platební kartu, stačí když si aktivuješ platbu na jedno kliknutí a příště jen vybereš částku, klikneš na dobít a je hotovo :) Máš kámoše u Kaktusu a dlužíš mu třeba za kafe? Prostě mu přes apku pošleš padesát kaček z kreditu a je srovnáno ;) Kouknout můžeš i do výpisu služeb, máš tak přehled, kdy se ti zaplatil předplacený tarif NEŘEŠTO, kolik tě stál balíček, kdy si dobil, nebo kam jsi volal a za kolik. I v roamingu máš data, která aplikace používá, zadarmo. Víc o aplikaci a o Kaktusu najdeš na www.mujkaktus.cz
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. • THIRTEEN LANGUAGES – Slovak, Czech, English, German, French, Spanish, Italian, Ukrainian, Hungarian, Polish, Chinese, Japanese and Korean. 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. FREE AND INDEPENDENT Congressa is an independent app and is not made by the conference organiser. For attendees 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@forensika.eu
Screenshots
Verdict
The clearest difference is in-app purchases: Kaktus at none against Congressa's 3. Congressa's advantage is update cadence (every 3 days vs every 2 months) and device support (3 vs 1). On price, ads 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. Congressa sells 3 one-off in-app purchases. Kaktus asks for nothing beyond the download.
Kaktus ships an update every 2 months, Congressa every 3 days. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.
| Parameter | Kaktus | Congressa |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 24.6% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 169 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | T-Mobile Czech Republic a.s. | Jan Sikuta |
In-app purchases
Kaktus
No in-app purchases
Congressa
- Coffee$2.99
- Lunch$6.99
- Dinner$8.99









