Comparison

Calc Ninja vs SumDash

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

Head to head
About

Calc Ninja

Features
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Calc Ninja is a mental-math battle puzzle. Fill the blanks in each equation to strike down the oni! How to play 1. Each battle shows an equation with blank tiles, e.g. ( □ + □ ) × □ = 18. 2. Tap number tiles to fill the blanks so the equation is true. 3. A correct answer strikes the demon; a wrong answer or running out of time lets it strike you. Content - 30 scrolls across 6 ninja ranks (Shoden to Gokui) - 16 unique oni bosses with a demon gallery - Operators and parentheses stay fixed. You only place the numbers, so it is pure mental math. Great for - Adults who want daily brain training - Anyone who likes number puzzles and quick arithmetic - Fans of a Japanese ninja-and-oni theme Free to play. No account required. * This app is a work of fiction. Characters and story are not based on real people or events.

About

SumDash

Features
Read full description

How fast is your mental math when the clock is ticking? SumDash turns arithmetic into a fast-paced arcade game: solve +, -, x and / before the countdown hits zero. Every correct answer refills the timer and pushes the pace a little higher. It starts easy. It never stays easy. No worksheets, no lectures - just you, four operations and a clock that keeps getting braver. If you have ever wanted quick math practice that actually gets your pulse up, this is it. GAME MODES • Endless - the classic run. Keep solving, keep speeding up and chase a new personal best. • Daily Heat - one shared challenge for the whole world. Everyone faces the same puzzle sequence that day, so the leaderboard is a pure test of skill. • Ranking - compete for the weekly global leaderboard. You get 3 hearts: a wrong answer or a timeout costs one, and the run ends when they are gone. • Practice - no timer, no hearts, no pressure. Solve as long as you like and check your accuracy at the end. CLIMB THE WEEKLY RANKING The global leaderboard resets every week, and the Top 5 sits right on the home screen. Pick a nickname, post a score and see how you stack up against players worldwide - then come back tomorrow and defend your spot. HOW TO PLAY 1. Tap the correct answer before the countdown runs out. 2. Every correct answer adds time - and the game speeds up. 3. You have 3 hearts. A wrong answer or a timeout costs one. That is the whole rulebook. Mastering it is another story. WHO IT IS FOR • Anyone who wants an arithmetic trainer that feels like a game, not homework • Students sharpening addition, subtraction, multiplication and division - a fun alternative to times tables drills • Adults who want a short brain warm-up with their coffee or on the commute • Anyone chasing sharper focus, faster calculation and quicker reflexes SHORT, LIGHT, FRIENDLY A round takes just a few minutes, so SumDash fits into any break. Your recent runs are saved, so you can watch yourself get faster. It is free, works offline and needs no account - the global board simply connects when you are online. +, -, x, / - how fast can you really go? Get SumDash and find out today.

Screenshots

Calc Ninja3 screens
SumDash3 screens

Verdict

The call

The clearest difference is in-app purchases: Calc Ninja at none against SumDash's 1. SumDash's advantage is update cadence (every 2 days vs monthly) and device support (3 vs 1). On price 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. SumDash sells 1 one-off in-app purchase. Calc Ninja asks for nothing beyond the download.

UpkeepUpdate frequency

Calc Ninja ships an update monthly, SumDash every 2 days. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 2 level
Calc Ninja versus SumDash: the parameters behind the verdict, then further details
ParameterCalc NinjaSumDash
PriceFreeFree
Update frequencyMonthlyEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size118 MB52 MB
Age rating9+4+
Developerkotaro yamadaYT Lab

In-app purchases

None

Calc Ninja

No in-app purchases

1 purchases

SumDash

One-time1
  • Remove Ads$0.49

Questions

Is Calc Ninja free?
Calc Ninja is free to download, with no in-app purchases.
Is SumDash free?
SumDash is free to download, with in-app purchases available.
Do Calc Ninja or SumDash have ads?
Both Calc Ninja and SumDash show ads.
Which is updated more often, Calc Ninja or SumDash?
Calc Ninja ships an update monthly, and SumDash every 2 days. Most recently, Calc Ninja was updated on October 31, 2026 and SumDash on November 2, 2026.

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