Comparison

VibraPad vs Alfredo Backer

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

Head to head
About

VibraPad

Learn the fundamentals of vibration analysis for machinery monitoring and diagnostics. Build virtual systems from a library of components, analyze sound signals via your device's microphone, and generate detailed reports. Optional external hardware enhances vibration data acquisition.

Highlights
  • Machine component library
  • Drag-and-drop system assembly
  • Sound signal acquisition via mic
  • External accelerometer data support
  • Live signal monitoring (time/frequency)
  • Fundamental frequency calculator
  • Report generation and email
Features
Read full description

VibraPad is an educational App to teach the basics of vibration analysis for rotating machinery monitoring, diagnostics and maintenance. It contains a library of machines including motor, pump, fan, blower, gearbox, belt derive, and bearings. The user can easily construct a system by connecting the components from the library, define the specification for each part of the system, and see the fundamental frequencies of the system in details and also on the vibration signal spectrum. The App can acquire the vibration signal through an extra hardware that can be purchased separately. However, without the extra hardware, the user can still acquire the sound signal of the machine through the mic of the iPad and the signal will be shown in the time- and frequency-domain. The harmonics of the machine frequencies can be also shown on the frequency signal. Features: - A library of machine components: motor, pump, fan, blower, gearbox, bearings, and belt drive -easy touch and drag-based assembly of the system using the library components - acquiring the sound signal of the machine through the iPad built-in Mic - Capability of the external accelerometer data acquiring if purchased with the extra hardware (contact Motionics for more info) - Live monitoring of the acquired (sound or vibration) signal in time and frequency - Zoom option for the signal in time and frequency domains - Fundamental frequency calculator for all machine components in the library - Report generation for all the machine components with fundamental frequencies - Report E-mail option - Automatic higher peak finder for the frequency signal ******** Note *********** The App requires external hardware to operate, please contact us for more information

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.

Screenshots

Alfredo Backer4 screens

Verdict

The call

The clearest difference is price: Alfredo Backer at Free against VibraPad's $119.99. VibraPad's advantage is iOS requirement (9.0 vs 16.0). On update cadence, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Alfredo Backer is free to download; VibraPad costs $119.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

VibraPad ships an update every 4 months, Alfredo Backer every 8 months. The most recent releases landed on June 5, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 8 level
VibraPad versus Alfredo Backer: the parameters behind the verdict, then further details
ParameterVibraPadAlfredo Backer
Price$119.99Free — better
Rating4.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPadiPhone, iPad — better
Requires iOS9.0 — better16.0
Further details — not scored
Size12 MB55 MB
Age rating4+4+
DeveloperMotionics, LLCExternato Alfredo Backer Ltda

In-app purchases

None

VibraPad

No in-app purchases

None

Alfredo Backer

No in-app purchases

Questions

Is VibraPad free?
VibraPad costs $119.99, with no in-app purchases.
Is Alfredo Backer free?
Alfredo Backer is free to download, with no in-app purchases.
Do VibraPad or Alfredo Backer have ads?
Neither VibraPad nor Alfredo Backer shows ads.
Which is updated more often, VibraPad or Alfredo Backer?
VibraPad ships an update every 4 months, and Alfredo Backer every 8 months. Most recently, VibraPad was updated on June 5, 2026 and Alfredo Backer on September 18, 2026.

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