Apps Like Rule of Three - Calculator for iPhone and iPad
Rule of Three - Calculator screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.


Calculator HD Pro Lite
Cider Software LLC
Calculate with dual-line display and multi-line input
A with dual-line display showing input and result. Supports multi-line equations and tap-to-move cursor. Saves calculation history with timestamps and labels. Allows emailing calculations and swiping to review previous entries.

Calculator₊
Impala Studios B.V.
Calculate, edit, and track equations
Perform basic arithmetic operations including addition, subtraction, multiplication, and division. Access scientific functions for advanced calculations. Convert units between different measurement systems.


Big Button Calculator Pro Lite
Cider Software LLC
Calculate with dual-line display and color themes
Calculate with a dual-line display showing input and result simultaneously. Use percentage and backspace functions. Switch between 18 color themes. Enter multi-line equations. Automatically format scientific expressions.

Calculator HD Pro
Cider Software LLC
Calculate with dual-line display and multi-line input
A with dual-line display showing input and result. Supports multi-line equations and tap-to-move cursor. Saves calculation history with timestamps and labels. Allows emailing calculations and swiping to review past entries.

Calculator Pro Lite
Cider Software LLC
Customize themes and buttons
Customize appearance with themes, button shapes, and colors. Choose from six layouts and control all visual elements. View input and result simultaneously on dual-line display. Adjust settings for precise calculations.


Calculator with History +
Beijing Free Calculator Technology Co., Ltd.
Calculate and track financial formulas
Perform calculations a scientific featuring pi, exponents, square root, negative numbers, and logarithms. View calculation and adjust decimal places or use thousands separators. Customize keyboard colors and sounds.

Calculator Pro Elite
Cider Software LLC
Design calculator interface as desired.
The app offers a modern calculator with extensive customization options. Users can create custom themes, choose button shapes, and adjust visual elements.


Rule of Proportion PRO
Glindemann, Sennoun, Langer GbR
Calculate proportions with 3 variables
Solve problems by entering three of four variables. Calculate using the of . Store calculations in a history log. Display detailed step-by-step solutions. Support for fractions and decimals. Allow entry of constants. No advertisements.

Stash - Rule Based Proxy
Stash Networks Limited
Set rules, connect securely, manage proxies
Manage network traffic with - routing for TCP, UDP, and ICMP protocols. Configure servers and apply rules on domain, IP-CIDR, or User-Agent. Support DNS over TCP, TLS, and HTTPS. Enable MitM, HTTP rewriting, and on-demand connections.

Top 3: Daily Focus Tasks
Tomas Parizek
On three per day
Task manager limits users to three priority per day. Users can add, complete, and review . are visible only for the current day. No multi-day planning or endless lists. remains on immediate priorities.


Shadowrocket
Shadow Launch Technology Limited
Capture traffic, record requests, configure rules
Capture and redirect HTTP/HTTPS/TCP traffic to a proxy server. Record and display HTTP, HTTPS, and DNS requests. Configure rules based on domain, IP range, or GeoIP. Track network usage and speed across different connections.

Three (Rule of 3 Calculator)
Pericles Maravelakis
Calculate anything with the rule of three.
The app performs fast calculations using the rule of three. It offers a modern interface with options for displaying results, including thousands separators and decimal digits.


Big Button Calculator Pro
Cider Software LLC
Calculate with color and precision
Calculate with a dual-line display showing input and result simultaneously. Use percentage and backspace functions. Choose from 18 color themes. Enter multi-line equations. Automatically format scientific expressions. Access via Split View.

How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.