Comparison

Alfredo Backer vs Multitape Turing Machine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Alfredo Backer

Features
Read full description

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.

About

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.

Highlights
  • Turing machine simulation
  • Symbol manipulation on tape
  • Abstract computation model
  • Algorithm understanding
  • State and head movement
Read full description

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

Alfredo Backer4 screens
Multitape Turing Machine4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 8 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

ScorecardNo meaningful differences
Alfredo Backer versus Multitape Turing Machine: the parameters behind the verdict, then further details
ParameterAlfredo BackerMultitape Turing Machine
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 8 monthsEvery 8 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size55 MB2 MB
Age rating4+4+
DeveloperExternato Alfredo Backer LtdaDenis Mandych

In-app purchases

None

Alfredo Backer

No in-app purchases

None

Multitape Turing Machine

No in-app purchases

Questions

Is Alfredo Backer free?
Alfredo Backer is free to download, with no in-app purchases.
Is Multitape Turing Machine free?
Multitape Turing Machine is free to download, with no in-app purchases.
Do Alfredo Backer or Multitape Turing Machine have ads?
Neither Alfredo Backer nor Multitape Turing Machine shows ads.
Which is updated more often, Alfredo Backer or Multitape Turing Machine?
Alfredo Backer ships an update every 8 months, and Multitape Turing Machine every 8 months. Most recently, Alfredo Backer was updated on September 18, 2026 and Multitape Turing Machine on June 1, 2026.

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