ThetaCalc app icon

Apps Like ThetaCalc for iPhone and iPad

by Felix Stehli★ 4.24 ratingsUtilitiesFreeData updated 2026-09-28

ThetaCalc screenshots

Ranked alternatives

Showing 121–140 of 1,000 ranked alternatives.

  1. CalcXLite app icon

    CalcXLite

    Kazunori Nohara

    Scientific calculator with user-defined functions.

    The app allows equations to be entered directly as they are written. User-defined functions can be entered, loaded, and saved with names and descriptions.

    ★ 4.06 ratingsUtilitiesFreeData updated 2026-09-29
  2. Pitch Checker: Chromatic Tuner app icon

    Pitch Checker: Chromatic Tuner

    Shigeki Matsunaka

    Record audio and display waveform data

    Analyze real-time audio for musical scale, , octave, frequency, and waveform. Measure vocal range and detect Do, Re, Mi. Practice accuracy and tune instruments. Pause analysis to review results. Display waveform and frequency data for voice training.

    ★ 4.6597 ratingsMusicFreeData updated 2026-09-21
  1. Codex Calc app icon

    Codex Calc

    Driftwood Studio Software LLC

    Calculator adapts to user preferences.

    The app offers a calculator with unit conversion, tip calculation, and RPN mode. It features a history tape and adapts to user preferences for button size and interface design.

    ★ 4.01 ratingsUtilities$0.99Data updated 2026-09-27
  2. Visual MATH 4D Lite app icon

    Visual MATH 4D Lite

    Ronny Weidemann

    Graph equations in 2D, 3D, and 4D

    Allows users to graph mathematical equations in 2D, 3D, and 4D with animations. It supports vectors, matrices, trigonometric functions, and complex numbers. Users can plot cartesian, polar, and parametric equations.

    ★ 4.885 ratingsEducationFreeData updated 2026-09-09
  3. CalcBox -All in One Calculator app icon

    CalcBox -All in One Calculator

    Realbyte Inc.

    Calculate, convert, and organize tasks

    Performs basic arithmetic and scientific calculations. Save equations and results for later. Unit Converter converts units for area, length, temperature, and more. Includes tools for currency exchange, date calculations, and percentage computations.

    ★ 4.8303 ratingsUtilitiesFreeData updated 2026-09-06
  4. Converter and Calculator app icon

    Converter and Calculator

    Cider Software LLC

    Convert units and currencies instantly

    A and unit/currency with a clean interface. Convert between 500 units across 29 categories and 161 currencies. Customize colors and display selected units. Enter values to instantly convert between units.

    ★ 4.7267 ratingsUtilities$2.99Data updated 2026-09-08
  5. 1Writer - Markdown Text Editor app icon

    1Writer - Markdown Text Editor

    Ngoc Luu

    Write, research, revise, and share efficiently

    Write, research, revise, and share with advanced formatting and support. Edit documents, organize notes, and sync with Dropbox. Customize themes and use keyboard shortcuts for efficient workflow.

    ★ 4.6393 ratingsProductivity$4.99Data updated 2026-11-02
  6. Userscripts app icon

    Userscripts

    Justin Wasack

    Run scripts on websites you visit

    Save and run custom JavaScript and CSS code on websites. Manipulate pages, block ads, inject styles, and automate tasks. No user tracking. Open source.

    ★ 4.3191 ratingsDeveloper ToolsFreeData updated 2026-11-02
  7. iQua2 app icon

    iQua2

    EcoWater Systems LLC

    Monitor water usage and system status remotely

    Monitor and control Wi-Fi connected water treatment systems. Track daily, weekly, monthly, and yearly water usage. View current flow rate and days until salt is empty. Turn water on or off remotely.

    ★ 4.8296 ratingsLifestyleFreeData updated 2026-09-06
  8. JavaScript Anywhere JSAnywhere app icon

    JavaScript Anywhere JSAnywhere

    Tatsuya Tobioka

    Pocket programming editor for web engineers.

    The app provides a portable editing tool for web engineers and designers. It allows users to write JavaScript, HTML, and CSS source code, preview it on an internal browser, and view console logs or errors.

    ★ 3.5457 ratingsUtilitiesFreeData updated 2026-09-13
  9. Bar Is Loaded - Gym Calculator app icon

    Bar Is Loaded - Gym Calculator

    Danny Li

    Calculate plates for your lifts

    Calculate barbell loads in kilograms or pounds with a plate . Adjust barbell weight, collars, and plate types. Reverse calculate by adding plates to reach a desired total. Syncs with fitness apps for progress tracking.

    ★ 4.9429 ratingsHealth & FitnessFreeData updated 2026-09-24

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.