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Best Function Apps

225+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated June 2026

Whether you're new to function or looking for an upgrade, our curated collection of 225+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Function

Function Health#1

Function Health by Function Health, Inc.

Own Your Health
Editor's Choice
πŸ’ͺ Health & Fitness
4.9😊(22K ratings)
Free
Function Health screenshot 1
Function Health screenshot 2
Function Health screenshot 3
Function Health screenshot 4
Function Health screenshot 5
Function Health screenshot 6

Discover comprehensive personalized health management with an app that offers over 100 lab tests covering all key body categories, insights from top doctors, and the ability to track your health over time. Revolutionize your health decisions with affordable membership – start your journey to 100 healthy years today!

What We Love

  • πŸš€ Seamless process for blood tests and results
  • πŸ“Š Comprehensive health insights and tracking
  • 🧠 Helpful clinician notes and recommendations
  • πŸ‘ User-friendly and visually appealing app

Room to Improve

  • πŸ” Lack of communication and support responsiveness
  • πŸ› Some bugs and usability issues in the app
Desmos Graphing Calculator#2

Desmos Graphing Calculator by Desmos, Inc.

Strong Contender
πŸ“š Education
4.3😊(1.3K ratings)
Free
Desmos Graphing Calculator screenshot 1
Desmos Graphing Calculator screenshot 2
Desmos Graphing Calculator screenshot 3
Desmos Graphing Calculator screenshot 4
Desmos Graphing Calculator screenshot 5
Desmos Graphing Calculator screenshot 6

Explore math with a powerful graphing calculator application that allows you to plot various equations, use sliders for interactive adjustments, create tables for data input, analyze statistics, and more. Visit the website to access the free browser version and enhance your mathematical skills today.

What We Love

  • πŸš€ Insane tool for FREE!
  • πŸš€ Best mobile graphing app
  • πŸ‘ Awesome for algebra and calculus
  • πŸ‘ Genuinely an awesome resource

Room to Improve

  • πŸ› Crashes and bugs
  • πŸ› Glitches with certain features
  • πŸ› Loses saved data
Audio Function Generator#3

Audio Function Generator by Thomas Gruber

Frequency and Signal Generator
Worth Considering
πŸ”§ Utilities
4.7😐(2.1K ratings)
FreeIn-App Purchases
Audio Function Generator screenshot 1
Audio Function Generator screenshot 2
Audio Function Generator screenshot 3
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Audio Function Generator screenshot 5
Audio Function Generator screenshot 6

Discover an exceptional Function Generator App with a wide array of features for generating test tones, frequency sweeps, volume sweeps, and more. From playing music tones to custom presets and advanced settings available in the PRO version, this app offers an intuitive and powerful audio experience. Visit the tutorial page at www.ee-toolkit.com/audio-function-generator and explore its capabilities today!

What We Love

  • πŸ‘ Great app
  • 🎢 Helps with Tinnitus
  • πŸ’― Best app I've paid for
  • πŸ” Highly recommended

Room to Improve

  • πŸ› Crashes
  • πŸ’° Deceptive/Money hungry
  • πŸ”’ Basic features paywalled

More Function apps to explore

4
GeoGebra Graphing Calculator
GeoGebra Graphing Calculator
GeoGebra Graphing Calculator
Graph, Drag, Share
Free

Graph, Drag, Share with a powerful calculator app for plotting functions, finding special points, and exploring transformations through sliders. Join millions worldwide in learning math and science, save, and share results with friends and teachers. Delve deeper into solving equations and calculus with the CAS calculator app. Connect and explore with GeoGebra today!

πŸ“š Education
(284)
5
Function
Function
Function
Your wedding, simplified.
Free
🌟 Lifestyle
(0)
6
Function Studios
Function Studios
Function Studios
Fitness & Wellness
Free

This fitness and wellness application allows users to easily purchase class packs and memberships, view and filter the schedule to find suitable classes, and manage their reservations to stay organized and committed to their fitness goals. Get started by browsing class options and booking your reservations today!

πŸ’ͺ Health & Fitness
(3)
7
GeoGebra Calculator Suite
GeoGebra Calculator Suite
GeoGebra Calculator Suite
Graph, construct, create
Free

Explore and learn math and science with a powerful calculator suite. Plot functions in 2D and 3D, solve equations, find derivatives, create geometric constructions, and analyze mathematical concepts with dynamic tools. Join millions worldwide in discovering the wonders of math and science today.

πŸ“š Education
(51)
8
Fossil Smartwatches
Fossil Smartwatches
Fossil Smartwatches
Function, Fossil Style
Free

Track steps, monitor sleep, and receive alerts from favorite apps with the Fossil Smartwatches companion app. Customize buttons, dial design, and settings to make your smartwatch uniquely yours. Stay connected and in control - download now!

🌟 Lifestyle
(51K)
9
Photomath
Photomath
Photomath
Learn math, step-by-step
Free

Photomath helps learners understand math step by step with accurate solutions, explanations, and various methods. Scan math problems to untangle complexities, access step-by-step explanations, expert-developed methods, word problem instructions, interactive graphs, video learning, and an advanced scientific calculator. Dive deeper with Photomath Plus for custom tutorials and textbook solutions.

πŸ“š Education
(733K)
10
Fun & Functional
Fun & Functional
Fun & Functional
Learn the function of objects
$14.99

This application helps individuals of all ages improve language comprehension and expression by learning the functions of everyday objects through interactive pictures and audio. It provides a tool for speech-language pathologists, parents, and others to develop categorization and descriptive skills, and can be customized to target specific categories and skills.

πŸ“š Education
(5)
11
Functional Burn
Functional Burn
Functional Burn
Health & Wellness
Free

Start your fitness journey with a personalized workout and meal plan tailored to your goals. With a comprehensive tracking system and real-time updates, you can stay on top of your progress and achieve your fitness goals.

πŸ’ͺ Health & Fitness
(8)
12
EduCalc Classic
EduCalc Classic
EduCalc Classic
by William Jockusch
Free

A versatile graphing calculator app with advanced scientific functions, graphing capabilities, unit conversion, constants, table generation, educational resources, and statistical tools. Perfect for students and professionals in math and science fields. Discover a world of mathematical possibilities in one convenient tool.

πŸ“š Education
(299)
13
Evidation: Earn Health Rewards
Evidation: Earn Health Rewards
Evidation: Earn Health Rewards
Get Paid for Healthy Actions
Free

Earn rewards for healthy actions like walking and sleeping with this app. Complete tasks and surveys to earn points towards achieving your health goals. Start earning rewards for a healthier lifestyle today!

πŸ’ͺ Health & Fitness
(28K)
14
Homework AI - Math Helper
Homework AI - Math Helper
Homework AI - Math Helper
Scan & Solve - Answer Anything
Free

Scan and solve math problems instantly with an AI-powered math helper app. Simply take a picture of the problem, and get step-by-step solutions and explanations. Master math with ease – download the app now!

πŸ“š Education
(4.9K)
15
Kettlebell Functional Training
Kettlebell Functional Training
Kettlebell Functional Training
By Adriell Mayes
Free

Get in top shape with personalized workout programs through I.A.H. Functional Training. Our integrated approach focuses on diverse exercises to prevent injury and optimize results. Experience the ultimate fitness journey today!

πŸ’ͺ Health & Fitness
(248)
16
The Function Lab
The Function Lab
The Function Lab
by The Function Lab LLC
Free
πŸ’ͺ Health & Fitness
(0)
17
Gompertz function graphing calculator and fitter
Gompertz function graphing calculator and fitter
Gompertz function graphing calculator and fitter
by Iaroslav Mironov
Free
πŸ“Š Productivity
(0)
18
Skill Yoga - Train Mind & Body
Skill Yoga - Train Mind & Body
Skill Yoga - Train Mind & Body
Functional Yoga for Athletes
Free

Skill Yoga is a mindfulness application that offers personalized training programs to enhance mental acuity and resilience through a combination of yoga, meditation, and cognitive exercises. Elevate your mental fitness and unlock your potential with Skill Yoga.

πŸ’ͺ Health & Fitness
(873)
19
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Algebra calculator free of ads
Free

Get instant step-by-step math problem solutions with this ad-free app. Stop struggling and download now for free!

πŸ“š Education
(30K)
20
AI Scanner・Objects Identifier
AI Scanner・Objects Identifier
AI Scanner・Objects Identifier
Scan and identify anything
Free

Scan your surroundings with your smartphone and instantly learn detailed information about objects, including plants, coins, animals, insects, and more, with cutting-edge AI technology. Get instant identification and answers to your questions with a simple photo, and explore the world around you like never before.

πŸ”§ Utilities
(192)

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