Comparison

Mental Math vs eスタジアム見守り通知

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

Head to head
About

Mental Math

Sharpen your mental math skills with this engaging app focused on addition. Customize card numbers and timing intervals for a personalized learning experience. Track your progress with visually stimulating graphics, suitable for all ages.

Highlights
  • Customizable card numbers
  • Adjustable timing intervals
  • Focus on addition
  • Progress tracking
  • Engaging visuals
  • User-friendly interface
Features
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■ What is flash anzan? Flash anzan is a "soroban-style" (Japanese abacus) way to do mental math: numbers flash on the screen one after another, and you add them up in your head. No abacus experience needed — start at the beginner level and work your way up. ■ Who it's for • Kids and students who want faster arithmetic • Soroban / abacus learners practicing for tests • Adults who want a quick daily brain workout • Anyone looking for a habit they can actually keep ■ Certification-based ranks Question count, number of digits, and flash speed are designed around flash anzan certification standards. Begin at the entry grades, pass a promotion exam, and your rank goes up — from your first dan all the way to 20th dan. Your skill is shown clearly as a real rank. ■ See your progress • High score and daily scores tracked in charts • Switch between weekly, monthly, and all-time trends • A practice calendar makes your run visible ■ Stay motivated • Online ranking: compete with players worldwide, by week or all-time • Daily missions: see today's goals at a glance • Reminders: a gentle nudge at your practice time ■ Make it yours • "Practice" mode: pick your own level (digits, count, speed) with no pressure • "Challenge" mode: race the clock and test your limit • Toggle read-aloud and sound effects A few minutes of flash anzan a day turns calculation practice into a habit. Why not start with one round today? ■ Privacy Policy & Terms of Use Privacy Policy: https://takayukimeilyn.github.io/menuplanner/privacy-policy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

eスタジアム見守り通知

Features
Read full description

eスタジアムの店舗にお子さまが入室・退室した際に、スマートフォンに通知を送信します。 また、過去の入室・退室の履歴を一覧で確認することもできます

Screenshots

Mental Math4 screens
eスタジアム見守り通知3 screens

Verdict

The call

The clearest difference is in-app purchases: eスタジアム見守り通知 at none against Mental Math's 3. eスタジアム見守り通知 also leads on ads (none vs shown) and update cadence (daily vs every 8 days). On price 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. Mental Math sells 3 in-app purchases, starting at $2.99 per month. eスタジアム見守り通知 asks for nothing beyond the download.

UpkeepUpdate frequency

Mental Math ships an update every 8 days, eスタジアム見守り通知 daily. The most recent releases landed on October 9, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 5 level
Mental Math versus eスタジアム見守り通知: the parameters behind the verdict, then further details
ParameterMental Matheスタジアム見守り通知
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews17.6% of reviews—
Number of ratings4 — better—
Update frequencyEvery 8 daysDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.215.0 — better
Further details — not scored
Size56 MB2 MB
Age rating4+4+
DeveloperTAKAYUKI HASHIMOTO株式会社ティー・エム・シー

In-app purchases

3 purchases

Mental Math

Subscriptions2
  • 月間プラン7 Days trial$2.991 Month
  • 年間プラン7 Days trial$19.991 Year
One-time1
  • Lifetime Premium$39.99
None

eスタジアム見守り通知

No in-app purchases

Questions

Is Mental Math free?
Mental Math is free to download, with in-app purchases available.
Is eスタジアム見守り通知 free?
eスタジアム見守り通知 is free to download, with no in-app purchases.
Do Mental Math or eスタジアム見守り通知 have ads?
Mental Math shows ads; eスタジアム見守り通知 does not.
Which is updated more often, Mental Math or eスタジアム見守り通知?
Mental Math ships an update every 8 days, and eスタジアム見守り通知 daily. Most recently, Mental Math was updated on October 9, 2026 and eスタジアム見守り通知 on September 23, 2026.

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