Carteirinha vs Duda
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carteirinha
This platform offers products and services for high school, technical, and university students. It allows for physical student ID requests and provides access to digital university IDs for mobile access control and more.
- Physical student ID requests
- Digital university ID access
- Mobile access control
- Student products and services
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Plataforma de produtos e serviços para alunos de ensino médio, cursos técnicos e universitários. Solicitação de Carteirinha Física. Acesso à carteirinha digital da universidade. Controle de Acesso pelo Celular e muito mais...
Duda
This app guides students through their academic and professional journeys. It helps manage academic life and explore career options, keeping users informed and organized.
- Academic life management
- Career exploration
- Personalized educational partner
- Information and organization
- Goal achievement support
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Desenvolvido para facilitar a vida dos estudantes e orientar quem ainda está explorando suas opções, o App Duda oferece recursos projetados para simplificar sua jornada educacional e profissional. Mais do que um aplicativo! O App Duda é seu parceiro educacional pessoal, auxiliando na gestão de sua vida acadêmica e na escolha do seu futuro, garantindo que você se mantenha informado, organizado e no caminho certo para alcançar seus objetivos. Seja você um estudante ou alguém em busca de uma nova carreira, faça o download do App Duda agora mesmo e tenha o poder da educação na palma da sua mão!"
Screenshots
Verdict
The clearest difference is ratings volume: Duda at 104 against Carteirinha's 1. Carteirinha's advantage is review sentiment (46% vs 22%). On price, rating, update cadence 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
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 — 5.0 for Carteirinha against 4.9 for Duda. That said, the two scores are not equally well evidenced: Duda has 104 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 46% of Carteirinha's written reviews are positive against 22% of Duda's.
Carteirinha ships an update fortnightly, Duda every 10 days. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.
| Parameter | Carteirinha | Duda |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.9 (104 ratings) |
| Positive reviews | 46.4% of reviews — better | 21.5% of reviews |
| Number of ratings | 1 | 104 — better |
| Update frequency | Fortnightly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 100 MB |
| Age rating | 4+ | +4 |
| Developer | Inova Tecnologia | Cruzeiro do Sul Educacional S/A |
Customer experience
Carteirinha
Duda
In-app purchases
Carteirinha
No in-app purchases
Duda
No in-app purchases
