Comparison

Touch RPN calc vs Karppa

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

Head to head
About

Touch RPN calc

This app offers a powerful RPN calculator with financial and scientific functions, mimicking popular industry-standard models. It includes programming capabilities and expandable flavors for diverse calculation needs.

Highlights
  • RPN financial calculator
  • RPN scientific calculator
  • Programming functions
  • HP-12C emulation
  • HP-11C emulation
  • Expandable calculator flavors
Features
Read full description

Touch RPN is an RPN financial and scientific calculator that implements most features of the industry-standard HP-12C, including programming functions. It also implements a scientific RPN flavor that implements most functions of the beloved 11C. And even more flavors (10C-like, 16C-like) can be purchased within the app.

About

Karppa

This platform helps financial educators manage their clients' finances efficiently. It centralizes financial data, automates repetitive tasks, and provides tools for analysis and goal tracking. Clients gain free access to their own financial dashboard.

Highlights
  • Client financial data centralization
  • Lead funnel management
  • Consolidated financial statements
  • Automated risk alerts
  • Goal and target tracking
  • AI-powered transaction extraction
  • Financial simulation tools
Features
Read full description

Karppa Flow é a plataforma de gestão para o educador financeiro. Ela reúne a vida financeira de cada cliente num só lugar e automatiza o trabalho repetitivo, para você passar menos tempo na planilha e mais tempo com o cliente. PARA QUEM É Educadores e consultores financeiros que acompanham a vida financeira dos seus clientes. Cada cliente recebe acesso gratuito à própria área. O QUE VOCÊ FAZ NO KARPPA FLOW - Carteira de clientes: todos os seus clientes organizados, com os dados financeiros centralizados. - Funil de leads: um quadro para acompanhar a prospecção, do primeiro contato até virar cliente. - Extrato consolidado: receitas, despesas, transferências e faturas de cartão sempre em dia. - Análises: seis meses de dados em gráficos, indicadores e alertas automáticos de risco. - Limites por categoria: um teto de gasto por categoria, com alerta quando o cliente ultrapassa. - Objetivos e metas: acompanhamento do progresso de cada meta do cliente. - Dívidas e patrimônio: a evolução mês a mês do endividamento e dos bens do cliente. - Tarefas: um plano de ação compartilhado, com comentários entre você e o cliente. - Financeiro do seu negócio: quanto você tem a receber, o que está em atraso e o seu faturamento. KARPPA IA Envie a fatura do cartão ou o extrato bancário em PDF, imagem ou Excel e a inteligência artificial extrai as transações em cerca de um minuto, prontas para revisão. Peça também uma análise automática do mês do cliente, em linguagem simples. SIMULADORES PRONTOS Aposentadoria, investimentos, financiamento, aluguel versus casa própria e financiamento versus consórcio. Ferramentas para embasar cada recomendação com números. PARA O CLIENTE O cliente acompanha o próprio painel, vê tarefas, objetivos e materiais compartilhados, e conversa com o educador dentro da plataforma. O acesso do cliente é gratuito. Feito no Brasil, em conformidade com a LGPD. Suporte humano por e-mail. Termos de Uso: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Touch RPN calc4 screens
Karppa3 screens

Verdict

The call

The clearest difference is review sentiment: Karppa at 100% against Touch RPN calc's 48%. Karppa also leads on in-app purchases (none vs 10) and ads (none vs shown). On price, monetization model, device support and iOS requirement 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

Both are free to download. Touch RPN calc sells 10 one-off in-app purchases. Karppa asks for nothing beyond the download.

UpkeepUpdate frequency

Touch RPN calc ships an update every 2 months, Karppa every 3 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
Touch RPN calc versus Karppa: the parameters behind the verdict, then further details
ParameterTouch RPN calcKarppa
PriceFreeFree
Rating3.4 (210 ratings) — better—
Positive reviews48.1% of reviews100.0% of reviews — better
Number of ratings210 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size30 MB21 MB
Age rating4++4
DeveloperElvis PfutzenreuterKarppa Educacao ltda

Customer experience

Touch RPN calc

All ratings209 ratings
Positive55.5%
Neutral9.6%
Negative34.9%
Written reviews212 reviews
Positive48.1%
Neutral10.8%
Negative41.0%

Karppa

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Touch RPN calc

Reported bugs

3 issues
  • Stopped working after iOS upgrade
  • Landscape mode not functioning properly
  • Ads appearing in paid version

Requested features

3 requests
  • Paste feature
  • Option to switch between RPN and algebraic modes
  • Ability to see stack contents instead of ads in paid version

Karppa

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Touch RPN calc

One-time10
  • Touch 11i app transferFree
  • Touch Fin app transferFree
  • Touch 15i app transferFree
Show 7 more
  • Scientific Basic$2.99
  • Scientific Premium$3.99
  • Computer programmer$3.99
  • Scientific Advanced$4.99
  • Financial Black-Scholes$4.99
  • Financial Premium$6.99
  • Financial Advanced$6.99
None

Karppa

No in-app purchases

Questions

Is Touch RPN calc free?
Touch RPN calc is free to download, with in-app purchases available.
Is Karppa free?
Karppa is free to download, with no in-app purchases.
Do Touch RPN calc or Karppa have ads?
Touch RPN calc shows ads; Karppa does not.
Which is updated more often, Touch RPN calc or Karppa?
Touch RPN calc ships an update every 2 months, and Karppa every 3 days. Most recently, Touch RPN calc was updated on October 24, 2026 and Karppa on October 12, 2026.

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