MathSpoken vs Shikirei
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathSpoken
This app helps children build math confidence by practicing at their own pace. It offers verbal questions and listens to spoken answers, adapting to the child's level. Parents can track progress, create groups, send assignments, and receive instant results.
- Verbal math questions
- Spoken answer input
- Adaptive difficulty
- Progress tracking for parents
- Group creation for multiple users
- Assignment sending and results notification
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Math can be hard and intimidating for kids! If you've ever gotten frustrated while helping your kids learn, you're not alone. MathSpoken is designed to help kids build confidence, practicing at their own pace, and able to repeat indefinitely without ever hearing a word of frustration. From basic addition and subtraction to more complex mathematical operations, MathSpoken automatically adjusts to your level. Responses can be provided in multiple ways, but most importantly, MathSpoken is able to ask verbal questions and listen to the answers, exactly like parents would do. Parents can easily track the progress made by their kids, and also create a group, where each member can use their own device, or share one. Once a group is created parents can send assignments and get instantly notified with the results.
Shikirei
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MOVE THE WORLD WITH EQUATIONS In this book, an equation is not a question to fill in. It is a mechanism to operate. Place gates where a parabola meets the ground and send a beam of light to the lighthouse. Choose how the sides of a triangle are divided and see whether three lines meet at one point. Add two waves and match their amplitude and phase. You never pick an answer from choices. Drag the controls, enter values, and press Observe to see where the light actually lands and which condition was broken. Predict, observe, adjust. There is no attempt limit. 51 UNITS, 153 STAGES Math I, A, II, B, C and III, with an introductory, an applied and a challenge stage in every unit. Twenty kinds of devices: gates at the zeros of a curve, rods with square-root lengths, probability branches you open and count, gears, waves, tangent lines, integral channels and more. Challenge stages add a resource budget, and some add obstacles and a required order. - Math I: quadratic functions, radicals, sets, trigonometric ratios, data analysis - Math A: counting and probability, conditional probability, geometry, integers - Math II: expressions and proofs, figures and equations, trigonometric functions, exponents and logarithms, differentiation and integration - Math B: sequences, recurrence relations, statistical inference - Math C: vectors, the complex plane, conic sections - Math III: limits, differential calculus, integral calculus Each unit covers representative topics. This is not a complete collection of every exam question type. The content follows the Japanese high school mathematics curriculum, so some topics and terms may differ from your course. WORKED EXAMPLES AND ADVICE - Open the reasoning on the board - Step through a worked example that shows each action and value (it grants no reward while you watch) - Ask the stage's spirit for a way of looking at the problem rather than the answer - Undo and reset are always available A SECOND MODE: THE UNIVERSE BOOK 60 algebra problems across 11 layers. Each card shows only the name of a technique, such as completing the square, and you compute the numbers in (x + ?)(x + ?) yourself. Answers are checked by expanding back to the original expression, so any valid order of steps is accepted. TECHNIQUES BECOME CHARACTERS Sixteen spirits, plus your guide Shiori, each with full-body art and three expressions. Their personalities come from real mathematics: Differentiation and Integration are siblings because of the fundamental theorem of calculus. In this world, fog is what has not yet been proven, and every restored equation clears a little of it. - Meet a spirit the first time you clear its stage - The compendium opens each spirit's own explanation of the technique and a bond episode PRICING The first 4 units of the Observation Journey (12 stages) and the first three layers of the Universe Book (12 problems) are free, with every feature enabled. A single one-time purchase unlocks the remaining 141 stages and 48 problems. If you purchased before, all 153 stages stay open. - No additional charges - No subscriptions - No ads - No gacha - No stamina WHO IT IS FOR - You want to feel what a formula actually represents - You memorized the formulas but do not know when to use them - You want to start math in the spare minutes before sitting down at a desk - You keep going when there are characters
Screenshots
Verdict
The clearest difference is update cadence: Shikirei at every 2 days against MathSpoken's every 8 days. 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. MathSpoken sells 3 one-off in-app purchases and Shikirei sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
MathSpoken ships an update every 8 days, Shikirei every 2 days. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.
| Parameter | MathSpoken | Shikirei |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (12 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 8 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 16 MB | 103 MB |
| Age rating | 4+ | 4+ |
| Developer | Laurent Garnier | SNAPLACE |
In-app purchases
MathSpoken
- Single User License$1.99
- Group Owner License$3.99
- Family License$4.99
Shikirei
- Unlock all layers$2.99









