191+ iOS apps curated and reviewed
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.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $2.99 | — | No | No | Jun 2026 |
| 2 |  | Free | — | No | Yes | Jul 2026 |
| 3 |  | Free | 4.7★ (1.7M) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.1★ (335) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.8★ (40K) | No | No | Aug 2026 |
| 6 |  | Free | 4.8★ (63K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (13K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.3★ (4.6K) | No | No | Aug 2026 |
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.