Best +-0.+ Apps

198+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated May 2026

Zero is the household name in +-0.+, but it's far from the only option. We track 198+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for +-0.+

Zero: Fasting Tracker App#1

Zero: Fasting Tracker App by Zero Longevity Science, Inc.

Intermittent Fasting Timer
Editor's Choice
💪 Health & Fitness
4.7😊(42K ratings)
FreeIn-App Purchases
#96in Health & Fitness
Zero: Fasting Tracker App screenshot 1
Zero: Fasting Tracker App screenshot 2
Zero: Fasting Tracker App screenshot 3
Zero: Fasting Tracker App screenshot 4
Zero: Fasting Tracker App screenshot 5
Zero: Fasting Tracker App screenshot 6

Achieve your health goals with an app that tracks fasting schedules, provides personalized recommendations, and offers a community for support and motivation. Start your journey towards better health today.

What We Love

  • 🚀 Easy to use
  • 📊 Helpful tracking and data
  • 💡 Informative learning resources
  • 🔍 Detailed fasting information

Room to Improve

  • 💰 Expensive premium subscription
  • 🔒 Forced account creation
  • 🙄 Intrusive ads and upsells
SnapCalc - Math Problem Solver#2

SnapCalc - Math Problem Solver by Mosaic S.r.l.

Camera Calculator for Homework
Strong Contender
📚 Education
4.2😞(42K ratings)
FreeAdsIn-App Purchases
SnapCalc - Math Problem Solver screenshot 1
SnapCalc - Math Problem Solver screenshot 2
SnapCalc - Math Problem Solver screenshot 3
SnapCalc - Math Problem Solver screenshot 4
SnapCalc - Math Problem Solver screenshot 5
SnapCalc - Math Problem Solver screenshot 6

SnapCalc is a camera calculator app that solves math problems instantly by snapping a picture. It provides step-by-step solutions, recognizes handwritten problems, offers quizzes for math practice, and access to educational resources. Upgrade to the Premium version for ad-free experience and more features.

What We Love

  • 🚀 Helpful for solving math problems
  • 👍 Provides step-by-step solutions
  • 💡 Useful for students struggling with math

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Difficult to cancel subscription
  • 🐛 Inaccurate problem recognition
Fasting App: Tracker & Timer#3

Fasting App: Tracker & Timer by Municorn Limited

Intermittent Fasting for Body
Worth Considering
💪 Health & Fitness
4.7😞(4.8K ratings)
FreeIn-App Purchases
Fasting App: Tracker & Timer screenshot 1
Fasting App: Tracker & Timer screenshot 2
Fasting App: Tracker & Timer screenshot 3
Fasting App: Tracker & Timer screenshot 4
Fasting App: Tracker & Timer screenshot 5

Get your health back on track with our fasting app! Monitor your fasting periods, track progress, set goals, and get personalized recommendations to achieve a healthier lifestyle. Start your journey to better health today.

What We Love

  • 🚀 Easy to use
  • 👍 Helpful for beginners
  • 💡 Customizable fasting schedules
  • 🚀 Convenient and portable

Room to Improve

  • 🔒 Paywall for basic features
  • 🐛 Bugs and glitches
  • 🔒 Deceptive free trial

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4
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Get expert math help in simple, easy-to-follow lessons covering algebra, calculus, statistics, and more, all aligned with common core standards. Improve your math skills with step-by-step tutorials and test prep guidance tailored to your needs.

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MathAce: Solve Study Question
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The application allows users to take a photo and ask questions, receiving personalized answers from a wide range of specialized bots covering topics like plant care, pet advice, and fitness. It's a free and engaging platform for users with diverse interests to connect with their personal AI assistants.

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Get instant help with Math, Physics, and Chemistry anytime, anywhere with an app that connects you to qualified Study Experts for personalized tutoring sessions in just minutes. No scheduling required - just snap a picture of your problem and get step-by-step explanations.

📚 Education
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15
PhotoMath Solver AI: MathBox
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MathBox is an app that solves math problems by simply taking a photo. It offers step-by-step explanations, tutoring, and covers various math topics for all grades. Get unstuck in math with MathBox!

📚 Education
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16
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A cutting-edge AI math solver app that uses image recognition to solve math problems by simply taking a photo. No need to struggle with complex equations - just snap a picture and get instant solutions. Revolutionize your math experience today!

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19
SnapMath - Photo Word Math
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scan photo & solve math
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Scan photos of math problems to get instant solutions with step-by-step explanations. Simplify your math homework and boost your understanding. Try it now!

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Sharpen your math, data, and computer science skills with interactive lessons on a variety of STEM topics. From algebra to AI and quantum mechanics, Brilliant offers bite-sized lessons to help you level up in just 15 minutes a day. Join over 10 million learners.

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