Comparison

Multiply Fun vs LockStudy

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

Head to head
About

Multiply Fun

This app makes learning multiplication tables up to 19x19 engaging through visual geometry. It uses arrays and area models to help users understand number combinations rather than just memorizing. Interactive practice and challenges build skills and confidence for learners of all ages.

Highlights
  • Geometry-powered multiplication learning
  • Visualize products as areas
  • Interactive practice with instant feedback
  • Activity-based challenges
  • Supports multiplication up to 19x19
Features
Read full description

Multiply Fun 19x19! transforms learning multiplication tables up to 19×19 into an exciting, visual experience. Designed for all ages, the app uses geometry—arrays, area models, and rectangular grids—to show how numbers combine, so learners see products instead of just memorizing them. With a friendly interface and interactive steps, Multiply Fun! builds skills and confidence—perfect at home, in class, or on the go. Features - Geometry-powered learning: visualize products as areas, split rectangles to decompose factors, and connect patterns to mental math - Interactive practice with instant feedback - Fun, activity-based challenges to keep users engaged Discover the magic of multiplication with Multiply Fun!

About

LockStudy

Features
Read full description

A moment of real focus can change your whole day.
 Start your flow with LockStudy — a study timer that combines app lock, an app blocker, and smart reports for better deep work. LockStudy helps you stay on track by reducing distractions with phone lock features, and lets you review progress with study report insights and usage stats. □ LockStudy Key Features
 ◦ Start your flow your way: study timer / pomodoro / deep work 
 ◦ Block distractions: app blocker + app lock (phone lock) for SNS, YouTube, and more 
 ◦ Build a custom session that matches your goals and routine
 ◦ Quick start anytime with widgets 
 ◦ Keep a clear session history with comments for each focus block 
 ◦ See your progress with a weekly study report and usage stats 
 ◦ Stay consistent with a simple goal tracker that turns focus into results □ Perfect For ◦ Anyone who loses focus even with a plan ◦ Those whose routines break because of SNS or YouTube ◦ People who want a clear record of study time and focus sessions ◦ Students, workers, or creators who need consistent deep work ◦ Anyone who wants a simple tool that helps you focus right now No more worrying when distractions break your focus.
LockStudy guides you through Focus → Log → Report, helping you reach your goals. 
Create today’s session and start with a 25-minute pomodoro now. LockStudy offers a monthly auto-renewable subscription and a one-time lifetime purchase. A 7-day free trial may be available for eligible users, and pricing may vary by country or region. You can manage or cancel your subscription anytime in the app settings. Terms of Use (EULA) & Privacy Policy: https://leeward-ferret-9bb.notion.site/lockstudy-terms-of-service-privacy-policy-en

Screenshots

Multiply Fun4 screens
LockStudy4 screens

Verdict

The call

The clearest difference is ads: LockStudy at none against Multiply Fun's shown. On price, update cadence, in-app purchases 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. Multiply Fun sells 1 one-off in-app purchase and LockStudy sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Multiply Fun ships an update every 2 weeks, LockStudy monthly. Both last shipped on September 23, 2026.

Scorecard1 real difference · 9 level
Multiply Fun versus LockStudy: the parameters behind the verdict, then further details
ParameterMultiply FunLockStudy
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.6
Further details — not scored
Size9 MB8 MB
Age rating4+4+
DeveloperMr.DarcyGlanz Studio

In-app purchases

1 purchases

Multiply Fun

One-time1
  • Remove Ads$0.99
2 purchases

LockStudy

Subscriptions1
  • LockStudy Pro Monthly7 Days trial$1.991 Month
One-time1
  • LockStudy Pro Lifetime$22.99

Questions

Is Multiply Fun free?
Multiply Fun is free to download, with in-app purchases available.
Is LockStudy free?
LockStudy is free to download, with in-app purchases available.
Do Multiply Fun or LockStudy have ads?
Multiply Fun shows ads; LockStudy does not.
Which is updated more often, Multiply Fun or LockStudy?
Multiply Fun ships an update every 2 weeks, and LockStudy monthly. Most recently, Multiply Fun was updated on September 23, 2026 and LockStudy on September 23, 2026.

Other comparisons