Best CalcStak alternatives: apps like CalcStak

💰 Finance

Whether you want more options like CalcStak or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to CalcStak

RPN by Tomas Stankiewicz Baldassarri

Simple RPN Calculator

Editor's Choice

0.0(0 ratings)

FreeIn-App Purchases

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

SwiftRPN by Patrick Gelvin

Strong Contender

0.0(0 ratings)

Free

Tototoday Random Number by Jack Tan

Weirdest random no. generator

Worth Considering

Calculator MAX- All in one

4.7(3 ratings)

Free

Generate random numbers for entertainment with a unique and quirky number generator. Explore a different way to interact with numerical sequences.

More apps like CalcStak

Best Scientific Calculator

(0)

RePNCalc - RPN Calculator Pro

Easy Reverse Polish Notation

Reverse Polish Notation (RPN) inputSwipe gesture key layout customizationLong-press stack item options

This utility app offers a Reverse Polish Notation (RPN) calculator experience for iOS devices. It features customizable key layouts via swipe gestures and long-press options for stack items. External keyboard support is also available.

free with in-app purchases

(1)

Only Markdown

simple, black & white

(0)

Dashboard Speedometer HUD

Karta Cockpit

Real-time SpeedometerSpeed Limit DisplayRadar Alerts

This driving assistant provides real-time speed tracking, radar alerts, and a HUD mode for safer navigation. It offers a distraction-free experience with all features accessible without ads or subscriptions.

(1)

free

bcRPN

by Paul Wilkins

Reverse Polish Notation (RPN) inputComplex number calculationsExtended precision math

This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.

(4)

free

Number and dice generator

Random generate

(0)

Crypto Tools (De)Encryption

Pro Encryption & Forensics

Encrypt and decrypt data with AES-256-GCMGenerate, import, inspect, and manage cryptographic keysParse and analyze ASN.1 structures and certificates

This app offers a comprehensive suite of cryptographic tools for Apple devices, including encryption, decryption, key management, and certificate analysis. It's designed for developers, security professionals, and technical learners to inspect, validate, and manage sensitive data locally with precision.

(1)

freemium