Comparison

JOJO Math and Reading vs Math Lock

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

Head to head
About

JOJO Math and Reading

This app helps children aged 4-10 improve math skills, focus, and build consistent practice habits through handwriting-based exercises. It offers engaging games and personalized levels to make learning enjoyable and effective.

Highlights
  • Handwriting-based math practice
  • Concentration games with timers and encouragement
  • Covers addition, subtraction, multiplication, and word problems
  • Personalized learning levels
  • Built-in rewards and math games
  • Focus on building daily routines
Read full description

JOJO MATH AND READING — FOCUS & FUN IN 10 MINUTES A DAY JOJO is a handwriting-first learning app for ages 4–10. Two subjects, one calm daily habit: families practice both math and reading by writing — not just tapping — building real focus in 10 minutes a day. Whether you're looking for a lighter alternative to Kumon or IXL, a more engaging option than Coolmath Games, or a calmer way to learn phonics than Reading Eggs or Duolingo ABC, JOJO gives a calm, personalized and rewarding routine that keeps learners on track. WHY FAMILIES LOVE JOJO: - Handwriting-based: write numbers, letters and words by hand — the way that truly builds focus and memory - Math: addition, subtraction with regrouping, times tables, word problems and mental math - Reading & writing: phonics, sight words, reading comprehension and vocabulary - Personalized levels, like Kumon but more flexible and encouraging - Focus timers, streaks and built-in rewards that keep practice going JOJO IS RIGHT FOR YOUR FAMILY IF: - You want screen time that builds skills, not just entertainment - You care about handwriting and focus, not just tapping answers - You've tried worksheets or other apps but nothing sticks - You want one routine that covers both math and early reading WHAT JOJO PRACTICE COVERS: - Writing numbers, addition, subtraction and times tables - Phonics, sight words and word families - Word problems, mental math and speed games - Reading comprehension, vocabulary and writing FIND US Instagram: @jojomath_global Website: www.jojo-math.com

About

Math Lock

This app transforms screen time into a learning opportunity for children aged 4-15. It requires solving math problems to unlock the device and offers guided practice, a private tutor, and brain training exercises. Parents can manage screen time while children engage with a fun, curriculum-based math experience.

Highlights
  • Math challenges to unlock device
  • Curriculum-based math for ages 4-15
  • Personalized questions by level
  • Private Tutor with photo solving
  • Brain training activities
  • Parental controls
Features
Read full description

Math Lock is a smart and engaging learning app that helps kids build math skills while giving parents more control over screen time. Designed for ages 4 to 15 (Year 0–10), Math Lock turns your device into a learning tool by requiring children to solve a math challenge before unlocking. But Math Lock is more than a lock screen app. It also includes guided practice, a Private Tutor, photo-based math help, and brain training features that make learning more interactive and useful every day. Questions are adapted by level, helping children progress from basic number recognition and simple equations to fractions, ratios, negative numbers, algebra, and more. Parents can support better habits and focused learning, while children enjoy a playful, colourful experience. Perfect for families who want learning, practice, and screen control in one app. Features: Lock screen with math challenges Curriculum-based math for Year 0–10 (ages 4–15) Auto-generated questions tailored to your child’s level Practice mode for daily maths learning Private Tutor with Ask, Snap, and Learn modes Step-by-step explanations for solving maths problems Photo solving for worksheets, textbooks, and handwritten questions Topic-based learning, including equations, fractions, ratios, and algebra IQ Test and brain training activities Parent settings and control support Fun, child-friendly design that encourages confidence and consistency Make screen time smarter with Math Lock. Terms of Service: https://mathlockapp.com/terms Privacy Policy: https://mathlockapp.com/privacy

Screenshots

JOJO Math and Reading4 screens
Math Lock4 screens

Verdict

The call

The clearest difference is review sentiment: JOJO Math and Reading at 96% against Math Lock's 0%. JOJO Math and Reading also leads on rating (4.9 vs 1.0) and ads (none vs shown). On price, in-app purchases, monetization model and device support 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. JOJO Math and Reading sells 10 in-app purchases, starting at $40.00 per month and Math Lock sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

JOJO Math and Reading holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: JOJO Math and Reading has 41 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 96% of JOJO Math and Reading's written reviews are positive against 0% of Math Lock's.

UpkeepUpdate frequency

JOJO Math and Reading ships an update every 9 days, Math Lock every 3 weeks. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 5 level
JOJO Math and Reading versus Math Lock: the parameters behind the verdict, then further details
ParameterJOJO Math and ReadingMath Lock
PriceFreeFree
Rating4.9 (41 ratings) — better1.0 (1 ratings)
Positive reviews96.4% of reviews — better0.0% of reviews
Number of ratings41 — better1
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size195 MB118 MB
Age rating+44+
DeveloperSMART BEAN TECHNOLOGY PTE. LTD.SPARKHIVE TECH LTD

Customer experience

JOJO Math and Reading

All ratings41 ratings
Positive97.6%
Neutral0.0%
Negative2.4%
Written reviews83 reviews
Positive96.4%
Neutral1.2%
Negative2.4%

Math Lock

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

10 purchases

JOJO Math and Reading

Subscriptions7
  • Monthly Subscription$40.001 Month
  • Monthly Plan$40.001 Month
  • Quarterly Plan$60.003 Months
Show 4 more
  • Quarterly Plan14 Days trial$60.003 Months
  • Quarterly Plan (2 Learners)$109.003 Months
  • Quarterly Plan (3 Learners)$161.993 Months
  • Annual Plan14 Days trial$189.991 Year
One-time3
  • 14-Day Learning Challenge$4.99
  • 21-Day Learning Challenge$5.99
  • 30-Day Learning Challenge$9.99
2 purchases

Math Lock

Subscriptions2
  • Math Lock Premium3 Days trial$2.991 Month
  • Math Lock Premium Yearly3 Days trial$29.991 Year

Questions

Is JOJO Math and Reading free?
JOJO Math and Reading is free to download, with in-app purchases available.
Is Math Lock free?
Math Lock is free to download, with in-app purchases available.
Which has better reviews, JOJO Math and Reading or Math Lock?
JOJO Math and Reading is rated higher. JOJO Math and Reading averages 4.9 out of 5 from 41 ratings, while Math Lock averages 1.0 from 1 ratings.
Do JOJO Math and Reading or Math Lock have ads?
Math Lock shows ads; JOJO Math and Reading does not.
Which is updated more often, JOJO Math and Reading or Math Lock?
JOJO Math and Reading ships an update every 9 days, and Math Lock every 3 weeks. Most recently, JOJO Math and Reading was updated on September 22, 2026 and Math Lock on September 9, 2026.

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