Comparison

Readability vs Synthesis Math Tutor for Kids

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Readability

This app offers AI-powered reading assistance for children, acting like a personal tutor. It listens as kids read, provides real-time pronunciation correction, and enhances vocabulary and comprehension through interactive questions. Parents can track progress via a dashboard.

Highlights
  • AI-powered reading assistance
  • Real-time pronunciation correction
  • Interactive comprehension questions
  • Personalized vocabulary lists
  • Parent progress dashboard
  • Grade-level stories and books
Features
Read full description

Readability’s award-winning Smart Reading & Comprehension Learning App gives your child the effectiveness of 1-on-1 tutoring. Our breakthrough voice-based technology LISTENS while your child READS, highlighting, and correcting any problem words. Kids from kindergarten to 6th grade will improve their reading, vocabulary, and comprehension skills all in the convenience of a mobile app. IMPROVE READING WITH 1-ON-1 TUTORING Readability prompts your child to read aloud and listens while providing reading help and real-time pronunciation correction as your child reads. If they get stuck, they can tap on the speaker icon to have Readability read the selected passage or word aloud. Readability automatically selects the right reading material for each child to maximize improvement and minimize the reading struggle. Your child will be eager to learn as these fun and educational grade-level stories come to life with bright illustrations. IMPROVE CRITICAL THINKING SKILLS Our industry-first comprehension with Interactive Voice-based Questions & Answers (IVQA™) asks your child questions verbally about the story they just read to improve their critical thinking skills. Your child then is prompted to answer the question verbally to ensure they fully understand what they read. Comprehension is as important as reading fluency, we deliver both in our smart reading app for kids. IMPROVE VOCABULARY Readability makes it easy to learn new words and their meaning with a personalized vocabulary list for your child. Your child can long-press on any word while reading to learn its pronunciation, meaning, and add it to their vocabulary list. Their vocabulary list is neatly organized A-Z and by book to further practice, review, and perfect new or difficult words. SET AND TRACK READING GOALS Set goals and follow your child’s progress with your very own Parent Dashboard detailing what they have read, reading duration, accuracy, comprehension, and speed. It also provides daily and weekly reading reports for accountability that can be shared with a teacher. ENGAGING BOOKS A massive selection of age-appropriate stories and educational works keep kids engaged and learning. Readability is the perfect reading app for kids. Getting started is easy with a 30-day free trial. Just download the app to sign up for your free trial. Cancel anytime. SUBSCRIPTION TERMS To access all app features, please subscribe to the 30-day free trial. Your subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will automatically be charged at the subscription price for renewal, within 24-hours prior to the end of the current billing period. You can manage your subscription and/or turn off auto-renewal by visiting your Account Settings after purchase. • Visit https://www.readabilitytutor.com/payment-policy/ for payment terms • Visit https://www.readabilitytutor.com/terms-of-use/ for terms of use Copyright 2023 Readability

About

Synthesis Math Tutor for Kids

An AI-powered math tutor offers personalized, adaptive lessons for children aged 5-11. It covers a range of topics with interactive guidance and engaging gameplay, helping to build confidence and critical thinking skills.

Highlights
  • AI-powered adaptive lessons
  • Interactive digital tutor
  • Multi-sensory learning with digital manipulatives
  • Progress tracking for accuracy and speed
  • Engaging gameplay for math practice
  • Adaptive flashcards
Read full description

Synthesis Tutor is an AI-powered math tutor for kids ages 5-11. Personalized, step-by-step lessons adapt to your child's level across place value, addition, subtraction, multiplication, division, and fractions, and make daily practice something kids actually ask to do. Key Features: • Interactive Digital Tutor: Step-by-step guidance that is better than a conversation with the world's best teacher. • Multi-Sensory Learning: Digital manipulatives for hands-on understanding. • Progress Tracking: Monitor your child's improvement in both accuracy and speed. • Engaging Gameplay: Math practice so fun, kids forget they're learning! • Adaptive Flashcards: Our smart system adjusts difficulty in real-time based on your child's performance. Perfect for: • Elementary school students • Children struggling with math anxiety • Advanced learners seeking a challenge • Neurodivergent and neuro-atypical students, including ADHD and Autism (ASD) • Parents looking for an effective at-home math solution Math Topics Covered: • Addition & Subtraction • Multiplication & Division • Fractions • Word Problems • Place Value & Number Sense • And more! Why Choose Synthesis Tutor? 1. Personalized Learning: Our app adapts to your child's pace and learning style. 2. Builds Confidence: Celebrates progress and encourages persistence. 3. Develops Critical Thinking: Teaches problem-solving strategies, not just memorization. 4. Parent-Approved: Designed to be both educational and entertaining. Kids and Families Love Synthesis Tutor! "The A.I is brilliant, the comments are perfectly pitched for ages 7+. My daughter liked 'her' and on the first session, I had to get her to stop at an hour and a half otherwise, she would have just kept going." - Parent of Emily (8) "There are times in homeschooling when you can see it click with your child. With Synthesis, I get to see that almost every time. Even better, I am starting to see them applying strategies they learn in Synthesis to other topics." - Parent of Maggie (12) and Mike (9) "One of my son's passions was always math, but lately he was less interested because he said his math class was too easy and boring. Synthesis gave him a challenge he needed and he's loving math again!" - Parent of Nathan (7) Download Synthesis Tutor today and watch your child's math skills soar! Turn screen time into learning time with an app so engaging, you might need to set limits on math practice. Experience the journey yourself with our free flashcards lesson focused on multiplication. For full access to our extensive math library, grab a subscription anytime and unlock the complete learning experience. Privacy Policy: https://www.synthesis.com/privacy Terms of Service: https://www.synthesis.com/terms

Screenshots

Readability4 screens

Verdict

The call

Readability and Synthesis Math Tutor for Kids both sit at 4.6 stars, but that hides the real split: 77% of Synthesis Math Tutor for Kids's written reviews are positive against 55% of Readability's. Readability's advantage is chart position (#165 vs unranked) and update cadence (fortnightly vs monthly). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Readability sells 2 in-app purchases, starting at $19.99 per month and Synthesis Math Tutor for Kids sells 5 in-app purchases, starting at $29.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Readability against 4.6 for Synthesis Math Tutor for Kids. Both are backed by a comparable volume of ratings — 26K and 10K respectively. Written reviews are what separate them: 55% of Readability's written reviews are positive against 77% of Synthesis Math Tutor for Kids's.

UpkeepUpdate frequency

Readability ships an update fortnightly, Synthesis Math Tutor for Kids monthly. Both last shipped on November 11, 2026.

Scorecard3 real differences · 8 level
Readability versus Synthesis Math Tutor for Kids: the parameters behind the verdict, then further details
ParameterReadabilitySynthesis Math Tutor for Kids
PriceFreeFree
Rating4.6 (26K ratings) — better4.6 (10K ratings)
Positive reviews55.3% of reviews76.7% of reviews — better
Number of ratings26K — better10K
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#165 — better—
DevicesiPhone, iPad — betteriPad
Requires iOS16.416.0 — better
Further details — not scored
Size247 MB3 MB
Age rating4+4+
Developere4site Inc.Synthesis

Customer experience

Readability

All ratings25,454 ratings
Positive90.5%
Neutral4.0%
Negative5.5%
Written reviews396 reviews
Positive55.3%
Neutral10.1%
Negative34.6%

Synthesis Math Tutor for Kids

All ratings10,187 ratings
Positive90.8%
Neutral4.0%
Negative5.2%
Written reviews146 reviews
Positive76.7%
Neutral5.5%
Negative17.8%

Bugs and requests

Readability

Reported bugs

4 issues
  • App charges for free trial
  • Subscription cancellation issues
  • Inconsistent app behavior
  • Compatibility problems on some devices

Requested features

4 requests
  • More customization options for text and background
  • Improved voice recognition accuracy
  • Expanded book selection
  • Better comprehension testing

Synthesis Math Tutor for Kids

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Readability

Subscriptions2
  • Readability Tutor1 Month trial$19.991 Month
  • Readability Tutor Annual1 Month trial$139.991 Year
5 purchases

Synthesis Math Tutor for Kids

Subscriptions5
  • Synthesis Tutor Family Monthly7 Days trial$29.001 Month
  • Synthesis Tutor Family Monthly$29.001 Month
  • Synthesis Tutor Annual Family7 Days trial$119.001 Year
Show 2 more
  • Synthesis Tutor Annual Family$119.001 Year
  • Synthesis Tutor Annual Monthly7 Days trial$294.991 Year

Questions

Is Readability free?
Readability is free to download, with in-app purchases available.
Is Synthesis Math Tutor for Kids free?
Synthesis Math Tutor for Kids is free to download, with in-app purchases available.
Which has better reviews, Readability or Synthesis Math Tutor for Kids?
Readability is rated higher. Readability averages 4.6 out of 5 from 26K ratings, while Synthesis Math Tutor for Kids averages 4.6 from 10K ratings.
Do Readability or Synthesis Math Tutor for Kids have ads?
Neither Readability nor Synthesis Math Tutor for Kids shows ads.
Which is updated more often, Readability or Synthesis Math Tutor for Kids?
Readability ships an update fortnightly, and Synthesis Math Tutor for Kids monthly. Most recently, Readability was updated on November 11, 2026 and Synthesis Math Tutor for Kids on November 11, 2026.

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