Comparison

PRIMO vs MathLock

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

Head to head
About

PRIMO

Features
Read full description

Primo Montessori APP安全的记录孩子到校、离校信息;家长通过信息提示了解孩子的学习内容及进度、在校的一日作息,日常记录、家园互动情况等。它还包括重要日程的更新和即时事件的提示!

About

MathLock

This app transforms screen time into educational math practice. It uses quick math games to unlock distracting apps, helping users reduce mindless scrolling and improve their math skills. Features adaptive difficulty and progress tracking.

Highlights
  • Math game app lock
  • Reduces distracting app usage
  • Five different math games
  • Adaptive difficulty levels
  • Streak tracking and XP
  • Emergency unlock option
Features
Read full description

MathLock turns screen time into math time. It is a math app lock that guards your most distracting apps behind a quick math game, so a few minutes of math practice take the place of the mindless scroll. Before Instagram, TikTok, YouTube or any app you choose can open, MathLock asks you to solve a quick challenge. Pick your apps, set your lock times, and the lock does the work. No willpower required. HOW MATHLOCK WORKS MathLock uses Apple Screen Time (Family Controls) to lock only the apps you choose. You select them with Apple's private picker, so MathLock never sees the other apps on your phone. When a locked app opens at a locked time, MathLock's shield appears. Tap Solve, finish a quick math game, and continue to your app. FIVE MATH GAMES, ONE TAP AWAY Math Duel: a fast mental math race against a rival bot. Mini Sudoku: a compact sudoku you can finish in a minute or two. Cross Math: balance the equations in a little math crossword. Math Maze: walk the number grid to reach the target. KenKen: crack the cages in the classic KenKen, also known as Ken Ken or mathdoku. A MATH WORKOUT, NOT JUST AN APP BLOCKER Most app blockers only block. MathLock turns every unlock into math learning: arithmetic, mental math, logic and number puzzles that keep your brain sharp. It is great for students who want daily math practice, for adults who want smarter screen time and better focus, and for anyone trying to doomscroll less and learn more. DIFFICULTY THAT ADAPTS TO YOU Start at Chill, Standard or Genius, and MathLock quietly tunes every game to your level. Easy mental math to warm up, or hard logic puzzles that make you think. You always finish and you always get through to your app. Winning just earns more. STREAKS, XP AND A CHEERFUL PI Keep your daily streak alive and watch it grow. Earn streak freezes to protect it on a busy day. Collect XP, level up, and let Pi, the orange mascot, celebrate with you. LIFE HAPPENS A clearly marked emergency unlock can pause the lock when you truly need it. It is deliberately a little slower than solving, because the easiest path should always be the math. PRIVACY FIRST MathLock locks only the apps you pick, chosen through Apple's private picker, so the app never sees your full list of apps. No account is needed, nothing is collected, and nothing is shared. Everything stays on your device, and you can change or remove Screen Time access at any time in Settings. Requires iOS 16 or later. Turn scrolling time into math time. Install MathLock and make every open count. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://reel.money/mathlock/privacy

Screenshots

PRIMO4 screens
MathLock4 screens

Verdict

The call

The clearest difference is in-app purchases: PRIMO at none against MathLock's 2. PRIMO also leads on device support (3 vs 1) and iOS requirement (8.0 vs 16.0). On price, update cadence 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. MathLock sells 2 in-app purchases, starting at $2.99 per 7 days. PRIMO asks for nothing beyond the download.

UpkeepUpdate frequency

PRIMO ships an update every 3 weeks, MathLock monthly. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
PRIMO versus MathLock: the parameters behind the verdict, then further details
ParameterPRIMOMathLock
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS8.0 — better16.0
Further details — not scored
Size63 MB40 MB
Age rating4+4+
DeveloperShanghai Kulebu Information Technology Co., LtdHamid Mahmood Siddiqui

In-app purchases

None

PRIMO

No in-app purchases

2 purchases

MathLock

Subscriptions1
  • MathLock Pro7 Days trial$2.997 Days
One-time1
  • MathLock Pro Lifetime$29.99

Questions

Is PRIMO free?
PRIMO is free to download, with no in-app purchases.
Is MathLock free?
MathLock is free to download, with in-app purchases available.
Do PRIMO or MathLock have ads?
Neither PRIMO nor MathLock shows ads.
Which is updated more often, PRIMO or MathLock?
PRIMO ships an update every 3 weeks, and MathLock monthly. Most recently, PRIMO was updated on September 30, 2026 and MathLock on September 29, 2026.

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