Alfredo Backer vs Delta
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Alfredo Backer
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Este é o aplicativo do Externato Alfredo Backer Desenvolvido para apresentar aos alunos, pais e responsáveis diversas funcionalidades, tais como: • As avaliações e faltas do ano ou semestre atual e passados, com envio de notificações e push quando as avaliações forem liberadas ou alteradas pela Instituição ou pelo professor. • Consulta financeira das parcelas atuais e vencidas, com a possibilidade de cópia da linha digitável para pagamento do boleto no aplicativo do banco de sua preferência. • Consulta do horário, sala e professor das disciplinas matriculadas, com possibilidade de adicionar lembrete do dia da aula. Envio de notificação caso tenha alteração de horário e sala. • Consulta Pedagógica com a possibilidade de filtrar por período da ocorrência. Envio de notificação no caso de nova informação pedagógica (ocorrências). • Consulta de Eventos com a possibilidade de adicionar lembretes de eventos futuros.
Delta
This app helps users solve math problems by creating and executing algorithms. It offers tools for homework checking, test preparation, and creating custom quizzes. Users can save, share, and download algorithms via the cloud.
- Create algorithms with natural language
- Execute algorithms to solve math problems
- Create and download custom quizzes
- Save and share algorithms
- Cloud synchronization for algorithms
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With Delta: Algorithms, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free! AVAILABLE FEATURES - Create algorithms with an easy and natural language in the editor - Quickly execute algorithms to solve any math problem - Create (or download) a quiz to train yourself - Save your algorithms on your device, share then on the Cloud, or download ready-to-use algorithms shared by other people EXAMPLE OF USAGE - Create an automated calculator for well known theorems or equations - Create a quiz to train solving equations CLOUD SUBSCRIPTION A Cloud subscription is available; It allows you to synchronize your algorithms across your devices and share them with other people on the Cloud. Application developed by Nathan Fallet © 2020 Groupe MINASTE
Screenshots
Verdict
The clearest difference is in-app purchases: Alfredo Backer at none against Delta's 3. Delta's advantage is update cadence (monthly vs every 8 months) and device support (4 vs 2). On price 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. Delta sells 3 one-off in-app purchases. Alfredo Backer asks for nothing beyond the download.
Alfredo Backer ships an update every 8 months, Delta monthly. The most recent releases landed on September 18, 2026 and August 19, 2026 respectively.
| Parameter | Alfredo Backer | Delta |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.1 (7 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Externato Alfredo Backer Ltda | Groupe MINASTE |
In-app purchases
Alfredo Backer
No in-app purchases
Delta
- Donation 1$0.99
- Donation 2$2.99
- Donation 3$4.99
