Best Simple Rpn Apps

191+ iOS apps curated and reviewed

4.4 avg rating

19 free apps

Updated June 2026

If you already know Simple RPN, this is the deeper bench. 191+ simple rpn apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.

Top Picks for Simple Rpn

#1

Simple RPN by Nicolas Augsburger Rossi

Editor's Choice

🔧 Utilities

0.0(0 ratings)

$2.99

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#2

RPN by Tomas Stankiewicz Baldassarri

Strong Contender

🔧 Utilities

0.0(0 ratings)

Free

RPN screenshot 1

#3

Calculator₊ by Impala Studios B.V.

Basic, Scientific, Plus Calc

Worth Considering

🔧 Utilities

4.7😞(1.7M ratings)

FreeAdsIn-App Purchases

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This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

What We Love

💻 Useful calculator features
🎨 Customizable backgrounds and themes
📚 Helpful history tracking

Room to Improve

📺 Intrusive full-screen ads
💰 Expensive subscription model
🔍 Ads blocking calculator functionality

More Simple Rpn apps to explore

f3 vpn - simple VPN

f3 vpn - simple VPN

VPN Proxy for traffic

This application enhances your online privacy and security by encrypting your internet traffic. It protects your personal data from cyber threats, especially on public Wi-Fi, and can help bypass intrusive ads based on your browsing history. Enjoy fast and secure internet access with simple one-click connections.

Complete data protectionSafe internet surfingMaximum server speed

📊 Productivity

free with in-app purchases

OpenVPN Connect

OpenVPN Connect

Zero-Trust VPN Client App

This official client app provides secure remote access to internal networks and cloud resources using a zero-trust VPN protocol. It ensures continuous verification for every access request, regardless of location. It requires a compatible OpenVPN business solution to function.

Secure VPN tunnelingAES-256 encryption & TLS 1.3MDM-friendly configuration

永远都能连上的VPN

This app offers a stable and private internet connection with its proprietary technology. It requires no registration and protects user privacy, allowing for secure browsing on public Wi-Fi. New users can enjoy a free trial to experience its features before committing to a purchase.

Stable connection technologyNo registration requiredPrivacy protection

free with in-app purchases

iSharkVPN - Secure & Fast VPN

iSharkVPN - Secure & Fast VPN

Fast Secure VPN for iPhone

This application provides a fast and stable virtual private network service to enhance online privacy and security. It offers global coverage with numerous nodes, allowing seamless access to content worldwide while protecting your data with advanced encryption. Its user-friendly interface ensures easy connectivity for all users.

High-Speed VPNStable ConnectionGlobal Coverage

📊 Productivity

free with in-app purchases

RostamVPN - Unlimited Fast VPN

RostamVPN - Unlimited Fast VPN

Safer Internet for all

This application safeguards your online privacy using advanced encryption and a zero-knowledge architecture. It offers fast, reliable connections with servers worldwide and an intuitive interface for easy use on your devices.

Modern encryption technologyZero-knowledge architectureFast and reliable connections

OSARi VPN: Simple Secure

OSARi VPN: Simple Secure

WiFi Secure Fast Private Proxy

This app provides a secure and private internet connection with a single click. It allows access to any website or app while encrypting your data and masking your IP address for complete anonymity. Enjoy fast connections and a zero-log policy for ultimate online privacy.

One-click connectionAccess any website/appData encryption

📊 Productivity

free with in-app purchases

Multi-protocol VPN client

Secure your online activity and protect your data with this VPN client. It offers fast, anonymous internet access with advanced encryption and a strict no-logs policy. Easily connect to your favorite sites and applications without compromising speed or privacy.

Fast VPN connectionMulti-protocol support (WireGuard, VLESS)Enhanced data protection and privacy

📊 Productivity

VPN Lite - FREE VPN Fast ®

VPN Lite - FREE VPN Fast ®

Fast VPN by FREE VPN Fast®

This lightweight and efficient application provides robust security and swift connections for a private and secure online experience. Its user-friendly interface makes it easy to protect your digital presence while browsing, streaming, and more.

Lightweight and efficient designRobust encryption for privacySwift and reliable connections

free with in-app purchases

Residential VPN

Residential VPN

VPN Privacy & Security

This app provides a fast, secure, and unlimited VPN service to protect your online privacy and data. It offers a strict no-log policy, encrypted connections, and access to a vast network of residential and mobile IP addresses for enhanced anonymity and unrestricted internet access.

Unlimited data and speedFast global server networkTier 1 static residential IPs

📊 Productivity

free with in-app purchases

VPN Proxy OvpnSpider Pro

VPN Proxy OvpnSpider Pro

OpenVPN profile spider

This app automatically finds and provides free VPN server profiles categorized by country. It helps secure your mobile activities and online privacy, especially on public Wi-Fi. You can connect directly or export profiles to other OpenVPN applications.

Automatic free VPN server searchServers grouped by countryDirect in-app VPN connection

📊 Productivity

free with in-app purchases

Anycast VPN - Fast & Secure

Anycast VPN - Fast & Secure

Secure your online activity with a global network of high-speed VPN servers. Protect all your devices with a single account, enjoy unlimited bandwidth, and customize your connection with split tunneling. Experience a private and fast internet connection.

Global server networkUnlimited bandwidthHigh-speed servers (up to 10 Gbps)

Multi protocol VPN client

Create your own personal VPN on a virtual server or connect to existing services. This open-source client offers secure, obfuscated connections with multi-protocol support. Easily set up your private network in minutes.

Create personal VPN on virtual serverConnect to Amnezia VPN servicesMulti-protocol support

free with in-app purchases

Fast, reliable, and secure VPN

This app provides a fast, reliable, and secure VPN connection with global proxy servers. It offers an easy-to-use interface and supports various proxy protocols. Users can enjoy a free trial and choose from flexible subscription options for enhanced privacy and internet access.

One-tap secure internet connectionGlobal proxy servers in over 30 countriesSupports SS, SSR, VMess, Trojan protocols

free with in-app purchases

The Eco-Friendly, Secure VPN

This VPN prioritizes environmental friendliness and efficiency, offering a secure and fast connection with minimal battery drain. It utilizes a lean native architecture and robust encryption protocols for enhanced privacy and performance.

Environmentally-friendly VPNMinimal battery consumptionLean native C code architecture

RPNConverter: Convert from infix notation to reverse polish notation with the calculator

RPNConverter: Convert from infix notation to reverse polish notation with the calculator

by Masaki Horimoto

Fast & Reliable VPN

This application provides a secure and private internet connection using advanced protocols. It offers robust protection for your online activities, ensuring a high level of internet security.

High-level internet securityEnhanced privacyWireGuard protocol support

VPN server on your device!

Easily transform any device into your personal VPN server. Connect securely from anywhere, protecting your internet usage on public Wi-Fi and enabling remote access to your home or office network. Enjoy privacy and security without complex setup.

Personal VPN server on any devicePatented connection technologyRemote access to home/office networks