Alfredo Backer vs Multitape Turing Machine
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.
Multitape Turing Machine
This app simulates a mathematical model of computation, allowing users to explore how abstract machines manipulate symbols on a tape according to defined rules. It's a tool for understanding the fundamental principles of computer algorithms.
- Turing machine simulation
- Symbol manipulation on tape
- Abstract computation model
- Algorithm understanding
- State and head movement
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Multitape Turing Machine Simulator. A Turing machine is a mathematical model of computation describing an abstract machine, that manipulates symbols on a strip of tape according to a table of rules. Despite the model's simplicity, it is capable of implementing any computer algorithm. The machine operates on a memory tape divided into cells, each of which can hold a single symbol drawn from symbols from the alphabet of the machine. It has a "head" that, at any point in the machine's operation, is positioned over one of these cells, and a "state" selected from a set of states. At each step of its operation, the head reads the symbol in its cell. Then, based on the symbol and the machine's own present state, the machine writes a symbol into the same cell, and moves the head one step to the left or the right, or halts the computation. The choice of which replacement symbol to write and which direction to move is based on a table that specifies what to do for each combination of the current state and the symbol that is read. Suggestions: snowlukin@gmail.com
Screenshots
Verdict
Alfredo Backer and Multitape Turing Machine are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 8 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.
| Parameter | Alfredo Backer | Multitape Turing Machine |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 8 months | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 55 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Externato Alfredo Backer Ltda | Denis Mandych |
In-app purchases
Alfredo Backer
No in-app purchases
Multitape Turing Machine
No in-app purchases






