Comparison

Kaira vs Світ Казок

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

Head to head
About

Kaira

Features
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Kaira: Math — gentle math practice for ages 7–9 Meet Kaira, a friendly Samoyed who keeps your child company during math practice. Kaira: Math is a calm, ad-free arithmetic app built on what cognitive science actually says about how kids learn math — not on points, streaks, or pressure. A DIFFERENT KIND OF MATH APP Most kids' math apps use coins, scores, and leaderboards to keep children engaged. Research on child motivation shows these rewards can actually reduce a child's interest in learning over time. Kaira: Math takes a different path. Children progress by building real skill, one step at a time, with Kaira by their side. HOW IT WORKS Your child chooses a skill to practice and how many problems to solve: 5, 10, or 15. Each skill has two phases: - Learning mode — calm, untimed, with gentle hints when something feels hard. Mistakes are treated as information, not failures. - Fluency mode — unlocks only after your child is consistently accurate. A playful way to build speed once the foundation is solid. New skills unlock automatically as earlier ones are mastered. No skill is ever forced, no skill is ever skipped. WHAT YOUR CHILD PRACTICES 25 carefully sequenced addition and subtraction skills, from single-digit facts through three-digit problems with carrying and borrowing. The progression is built on evidence-based strategies like "making tens" and decomposition — the same techniques great teachers use. THE PARENT DASHBOARD Behind a PIN, parents get a dashboard that shows what really matters: which skills your child is working on, where they are stuck, and what kind of mistakes they are making. Not just "73% correct" but "most errors are forgotten carries" — with specific suggestions for how to help at home. PRIVATE BY DESIGN - All data stays on your device. No accounts, no cloud, no sign-up. - No ads. Ever. - No analytics or tracking of your child. - No network connection required to use the app. FOR AGES 7–9 Designed for children in roughly 2nd through 4th grade who are working on double-digit addition, subtraction, carrying, and borrowing. Kaira: Math is not a replacement for school math — it is a calm, private place to build fluency and confidence between lessons. SUBSCRIPTION Kaira: Math Premium unlocks full access to all skills and the parent dashboard. Try it free for 7 days, then $4.99/month or $29.99/year. Cancel anytime in your Apple ID settings. Payment is charged to your Apple ID at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Practice math with Kaira. One skill at a time. Terms of Use: https://spartak.io/kaira_math/terms.html

About

Світ Казок

Features
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«Світ Казок» — це унікальний додаток, який поєднує радість читання з магією слухання. Відкрийте для себе багату колекцію коротких, яскравих оповідань українською мовою, які супроводжуються чіткими аудіозаписами, озвученими носіями мови. Кожна історія — це маленька пригода, сповнена тепла, гумору та важливих цінностей. Завдяки зрозумілому й інтуїтивному інтерфейсу ви можете в будь-який момент зануритися у світ казок — удома, в дорозі чи перед сном. ЩО ВИ ЗНАЙДЕТЕ В ДОДАТКУ: • Сотні оригінальних текстів для читання українською мовою • Професійні аудіозаписи до кожної історії • Можливість читати та слухати у власному темпі • Чистий, зручний інтерфейс без зайвих відволікань • Доступ offline після завантаження контенту • Регулярне додавання нових оповідань ЧОМУ ЦЕ ВАРТО ЗРОБИТИ? • Розвиває уяву та збагачує словниковий запас • Допомагає вдосконалити вимову та плавність мовлення • Ідеально підходить для вечірнього читання • Плекає любов до рідної мови • Об'єднує покоління за спільним читанням «Світ Казок» — влаштовуйтеся зручніше, слухайте та поринайте у світ українських історій. Кожна сторінка — це нова пригода!

Screenshots

Kaira4 screens
Світ Казок4 screens

Verdict

The call

The clearest difference is update cadence: Світ Казок at daily against Kaira's every 10 days. Kaira's advantage is iOS requirement (17.0 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kaira sells 2 in-app purchases, starting at $4.99 per month and Світ Казок sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kaira ships an update every 10 days, Світ Казок daily. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level
Kaira versus Світ Казок: the parameters behind the verdict, then further details
ParameterKairaСвіт Казок
PriceFreeFree
Update frequencyEvery 10 daysDaily — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size3 MB426 MB
Age rating4+4+
DeveloperSpartak KagramanyanSebastian Strus

In-app purchases

2 purchases

Kaira

Subscriptions2
  • Kaira: Math Premium7 Days trial$4.991 Month
  • Kaira: Math Premium7 Days trial$29.991 Year
1 purchases

Світ Казок

One-time1
  • Premium Access$3.99

Questions

Is Kaira free?
Kaira is free to download, with in-app purchases available.
Is Світ Казок free?
Світ Казок is free to download, with in-app purchases available.
Do Kaira or Світ Казок have ads?
Neither Kaira nor Світ Казок shows ads.
Which is updated more often, Kaira or Світ Казок?
Kaira ships an update every 10 days, and Світ Казок daily. Most recently, Kaira was updated on October 28, 2026 and Світ Казок on October 24, 2026.

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