Comparison

SumXMinus vs MathEReal

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

Head to head
About

SumXMinus

Features
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Created by a Math Teacher Train your brain in just 30 seconds. QuickMath Series A fast and fun way to master mental math. Can you find the right number pairs? Use both positive and negative numbers to reach the target. Example: (-2) + (-4) = -6 (-4) + (+5) = 1 Challenge yourself and improve: • Negative number understanding • Mental calculation speed • Focus and thinking skills From upper elementary to middle school level. QuickMath Series • SumX – Number Pair Puzzle • SumXMinus – Negative Number Training • Common Divisor – Divisor Brain Training • Exponent – Power Calculation Challenge • Decimal Finder – Number Line Intuition

About

MathEReal

Features
Read full description

初めて正の数、負の数を学ぶ中学1年生を対象にしています。 負の数を含む減算を、加算に直してから計算する練習です。 問題の下にあるカードを、加算の形になるように合わせてから計算します。 正の数 ・ 負の数でカードの色を変えることで視覚的にも分かりやすく、 カードゲームのポイントのように扱うことで数がイメージしやすくなります。 無料で広告表示もなくデータ収集もありませんので安心してご利用いただけます。

Screenshots

SumXMinus4 screens
MathEReal3 screens

Verdict

The call

The clearest difference is ads: MathEReal at none against SumXMinus's shown. MathEReal also leads on device support (3 vs 1). SumXMinus's advantage is update cadence (every 6 weeks vs every 8 months). On price, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SumXMinus ships an update every 6 weeks, MathEReal every 8 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 3 level
SumXMinus versus MathEReal: the parameters behind the verdict, then further details
ParameterSumXMinusMathEReal
PriceFreeFree
Update frequencyEvery 6 weeks — betterEvery 8 months
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.2 — better
Further details — not scored
Size32 MB7 MB
Age rating4+4+
DeveloperKatsuhiko YaoINCICT

In-app purchases

None

SumXMinus

No in-app purchases

None

MathEReal

No in-app purchases

Questions

Is SumXMinus free?
SumXMinus is free to download, with no in-app purchases.
Is MathEReal free?
MathEReal is free to download, with no in-app purchases.
Do SumXMinus or MathEReal have ads?
SumXMinus shows ads; MathEReal does not.
Which is updated more often, SumXMinus or MathEReal?
SumXMinus ships an update every 6 weeks, and MathEReal every 8 months. Most recently, SumXMinus was updated on October 9, 2026 and MathEReal on October 12, 2026.

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