Curated apps similar to RPN Calc, ranked by relevance and user ratings.
Willy Kunz
Utilities
A dream calculator of the mid-70's, priced at $2,500 in today's dollars (2025), right on your iPhone! RPN-67 SD is the iPhone version of RPN-67 Pro, the first complete simulation of Hewlett-Packard's legendary HP-67 programmable calculator for the iPad.
And track with simple taps
Terence Williams
Utilities
Items with a simple tally . Tap to increase or decrease numbers. Autosaves progress. Clear or undo entries. No advertisements. Large buttons for easy use without looking at the screen.
Calculate and solve equations
Halcyon Touch Software
Utilities
Perform complex calculations with support for real and complex numbers. Manipulate symbolic expressions and use over 225 built-in functions. Scroll through results with finger gestures. Copy and paste data for easy sharing.
View spots, track contacts, export data
Peter Marks
UtilitiesDisplays real-time WSPRnet spots with contact details and signal information. Tap a spot to view the call on QRZ.com. Export data as CSV for external sorting and graphing.
Yan Liong Tan
UtilitiesSimple and Easy to see calculator for all ages. Large Numbers so you can see results and buttons easily. Able to do landscape mode in iPhone and iPad. Dark UI so that the view is easy on the eyes.
Ha Do Thi Thu
UtilitiesFind your phone fast—just clap. ClapFinder helps you quickly locate your iPhone with a loud alert and flashlight blinking. Need protection in public? Turn on alarms that trigger when someone moves your phone or unplugs your charger. Key features 1) Clap Finder (Find my phone by clap) - Clap to...
Patel Rikunj
UtilitiesTransform your typing experience with RGB Keyboard Themes, the ultimate keyboard customization app for iPhone and iPad.
Calculate , minutes, and seconds
Applorium Ltd
UtilitiesCalculate time durations by adding, subtracting, and converting , minutes, and seconds. Track work , compute pay based on rates, and manage schedules. Sync between iOS and macOS devices.
Xiamen Infinity Starway Technology Co., Ltd.
Utilities充电功率助手是一款运用丰富、智能的算法计算出设备充电功率的应用。 它通过快速准确地检测出您设备的充电功率，从而帮助您找到最理想的充电组合，快来看看它具体有哪些功能吧！ ======功能====== 1.查看设备的充电状态、电量、适配充电器等数据 2.检测设备的充电功率 3.记录每次检测的充电时间、充电量、充电速度、充电器等数据 4.用户可自由添加充电器品牌、功率、接口、类型 5.实用的充电工具（电池续航计算器、电池保养技巧） 6.电池信息分析查询功能
Customize and for messages and social media
Donald Russell
UtilitiesCustomize lock screen with widgets and dynamic . Use themed keyboards and highlight packs for messages. Add kaomoji and emojis. Edit social media bios and posts with style. Share custom and themes.
Scan codes with your camera
Tomasz Jozef Zawada
UtilitiesScan QR codes and barcodes including UPC, EAN, ISBN, and GS1 Databar. Search for product information based on scanned barcodes. Automatically detect and scan codes without manual button presses. Share scanned results via email or social media.
Peter Breitling
UtilitiesThis professional tool called Clinometer is the most precise (all you can get with some calculations) slope measurement tool for the iPhone, iPod Touch and iPad using all sides of the device plus the camera.
Set with and timer
Hana Mobile LLC
UtilitiesSet alarms with from your iPod library. Choose multiple alarms and customize vibration settings. Enable weekday/weekend repeats and switch between digital and analog themes. Adjust colors and time/date settings.
Scan devices on your local network
MATIA LABS, INC.
UtilitiesScan local network devices to identify all machines and internet devices on the LAN. Customize device names and icons. Save and share scan results. View detailed device information. Control connected devices remotely.
Satnam Singh
Utilities'Pocket Lux Meter' turns your iPhone or iPad into a professional and easy-to-use light meter.
Calculate with big and small size
Adalgisa Raniolo
UtilitiesA lightweight with large and simple interface. Perform basic calculations and copy results to clipboard. Offers five customizable skins for different visual preferences.
Scan and decode QR and barcode images
Pro App Company Limited
UtilitiesScan QR codes and barcodes using the device's camera. Recognize and display encoded information like URLs, emails, Wi-Fi details, and vCards. Access a flashlight for low-light scanning.
Start, stop, reset time
Netviking AB
UtilitiesAllows users to start, stop, and reset . Track time in countdown or count-up mode. Features large buttons for easy access and quick startup. Small file size ensures efficient performance.
倩欣 戴
UtilitiesQClean is a truly user-friendly smart cleaning app designed specifically for iPhone.
Check tickets, find winners, track jackpots
Nappkin LLC
UtilitiesScan tickets for Powerball, Mega Millions, and state lotteries. View real-time results and jackpot amounts. Check winning numbers and track status. Receive updates on upcoming draws and official results.
App information from Apple App Store. RPN Calc and related trademarks belong to James Mattis.