Mental Math vs Sum Serenity
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mental Math
Enhance your mental math abilities with this interactive app. It offers engaging gameplay and exercises, teaching calculation secrets and tricks to solve problems quickly. Track your progress and compete globally.
- Basic operations (+, -, x, /)
- Multiplication tables (1-20)
- Power calculation (1-100)
- Percentage challenges
- Fast calculation tricks
- Adjustable difficulty levels
- Progress tracking
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Discover the power of Mental Calculation, an interactive app tailored for kids, students, and adults, crafted to enhance your mental math skills. Learn and improve effortlessly through exciting gameplay or exercise. Includes fast Calculation secrets and tricks to help you solve problems in seconds! Follow and compare your world ranking with the Game Center. Perfect for all skill levels, this app offers personalized practice to help you improve and excel. Features and Options Include: Basic operations: +, -, x, / Multiplication tables (1 to 20) Power calculation (1 to 100) Percentage challenges Cheering messages Fast calculation tricks Learning section: times and power tables Difficulty levels: beginner to expert in 5 levels Adjustable or no timer option Shows correct answer if you fail Track your history, best score, and prices
Sum Serenity
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Sum Serenity is a calm mental maths game. Solve quick sums against a gentle clock as you wander a winding path through five peaceful, illustrated worlds, with soft music to keep you company. FIVE WORLDS, 75 LEVELS • Lily Pond: warm up with addition. • Mossy Forest: subtraction joins in. • Signpost Village: multiplication, starting with the times tables. • Butterfly Garden: division joins the mix. • Candlelit Festival: the toughest sums of all. Each world builds slowly, so the sums grow with you and never feel out of reach. THREE STARS TO CHASE Finish a level with time to spare to earn up to three stars. Replay any level to beat your time and fill in the gaps. SECRET LEVELS Earn every star in a world to open its secret level: a longer, quicker run along a moonlit path. ENDLESS MODE Pick your sums and your pace, then see how far you can go. Every right answer wins a little time back, and your best run is saved. MADE TO RELAX • A big, clear number pad that is easy to tap. • Pause whenever you need to. • Music, sound effects and haptics you can switch off. • No account, no adverts and no internet needed to play. TRY IT FREE Play all 15 levels of Lily Pond for free. Unlock the full game with a single purchase to open the other four worlds, the secret levels and endless mode. There is no subscription.
Screenshots
Verdict
The clearest difference is update cadence: Mental Math at every 2 weeks against Sum Serenity's every 8 months. Sum Serenity's advantage is iOS requirement (15.0 vs 17.0). On price, ads, 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
Both are free to download. Mental Math sells 1 one-off in-app purchase and Sum Serenity sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Mental Math ships an update every 2 weeks, Sum Serenity every 8 months. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.
| Parameter | Mental Math | Sum Serenity |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 59 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Oliver Glaettli | Blossom Labs |
In-app purchases
Mental Math
- Purchase Mental Calculation$6.99
Sum Serenity
- Serenity Seeker$1.99
Questions
Is Mental Math free?
Is Sum Serenity free?
Do Mental Math or Sum Serenity have ads?
Which is updated more often, Mental Math or Sum Serenity?
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