# Yeontan Math Games: Brain Gym — Ad-free math, 5 minutes a day

> Ad-free math, 5 minutes a day (iPhone/iPad app by MIN SEOK KIM.)

- Source: https://appshunter.io/ios/app/yeontan-math-games-brain-gym/id6815429633 (this page in markdown: same URL + `.md`)
- Developer: [MIN SEOK KIM](https://appshunter.io/developer/6810115157)
- Category: Games, Education, Family, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 26 MB
- Languages: American English, French (France), German (Germany), Hindi, Italian, Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-09-29
- Data updated: 2026-10-18

## What is Yeontan Math Games?

Yeontan Math Games is math practice without ads. Five minutes a day, ten problems per set.

■ Who it is for
· Children learning times tables and mental arithmetic
· Middle schoolers reviewing equations and functions
· Adults who want to keep their calculation sharp

■ Free
Addition, subtraction, multiplication, division and times tables up to level 10, in several formats: type the answer, true or false, fill the blank, compare. Everyday Math, word problems that turn real-life scenes into equations, is free through the elementary range (level 10). The mini-games 2048 and Make 24 (some modes) and a two-player Duel on one device are free too. The times table check (tables 2 to 9) and last week's report are free as well.

■ With Pro
Advanced elementary topics (mixed operations, negative numbers, fractions, decimals, percentages, squares and roots) and all of middle-school math, grades 7 to 9. Everyday Math continues into middle-school word problems (ages, speed, simultaneous equations and more). Levels up to 30, Sudoku, every Beat the Clock mode, all-time statistics, week-over-week comparison, the full mistakes notebook, replays of past daily challenges and five family profiles.

■ What makes it different
· No ads. Not even in the free version.
· Mistakes explained with pictures: blocks for carrying and borrowing, a balance scale for equations, bars and area models for fractions.
· Hints open one step at a time. The last step is yours.
· Levels adjust themselves. The next session follows your accuracy and speed.
· Wrong answers go to the mistakes notebook and come back later. Look at the explanation again, or replay only the ones you missed.
· Times table check: choose a table, an order (in order, backwards or mixed) and a target time (20, 15 or 10 seconds), then check one table.
· Three daily challenge sets and a streak that survives one missed day a month, also on your Home Screen widget.
· Last week's report puts the problems you solved, your accuracy and your time per problem on one card.
· On iPad the layout spreads out to use the larger screen.
· Works offline. No account, no sign-in.
· Friend tab: earn kibble by solving problems and use it to feed, water and play with a kitten. No penalties, no notifications, and kibble can't be bought.

■ Using it as a family
Pick "A child will" on first run and a guardian sets a four-digit PIN. Purchases, profile changes and clearing history all ask for that PIN, and kid screens show no external links or contact addresses.

■ Pro is a one-time purchase
Not a subscription, nothing renews. Restore it on other devices with the same Apple Account, and share it with Family Sharing.

■ Privacy
The developer collects nothing. There is no developer server, and your practice history stays on this device.

Contact: yeontan.fam@gmail.com

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro: Lifetime Unlock | $6.99 | one-time |
| Coffee for the Developer | $1.99 | one-time |


## Is Yeontan Math Games safe?

Not enough ratings yet to assess Yeontan Math Games.

## Is Yeontan Math Games legit?

Yeontan Math Games: Brain Gym has limited verification signals. The AppsHunter Legitimacy Score for Yeontan Math Games is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.1.0 — 2026-10-09

New in 1.1.0

· New Friend tab: care for a kitten with kibble earned by solving problems.
· Mistakes notebook: review what you missed and replay it.
· Times table check: pick a table, an order and a target time.
· Last week's report on one card (comparison with the week before is Pro).
· Confetti and sounds for perfect scores and level-ups; results show your records.
· One missed day a month no longer breaks your streak.
· Replay the last 7 days of daily challenges (Pro).
· "Share the app" in Settings.
· Fixes: large text, exit confirmation, daylight-saving dates.

### 1.0.9 — 2026-10-02

· Improved translations in many languages: fixed unclear explanations, awkward phrasing and singular/plural wording.
· True/False questions now show buttons in your language.
· Fixed a hint that gave away the answer.

### 1.0.8 — 2026-10-02

· Settings now has "Rate this app" (after a parent check). If you enjoy the app, a rating or review means a lot.
· On an adult profile, after finishing Today's Challenge several days in a row, the rating prompt may appear once in a while.

### 1.0.7 — 2026-10-01

· Everyday Math now has water problems: convert L and mL (grade 3), and find the volume of a box-shaped tank or of a sunken stone (grade 6). A leaking tank, two taps and salt-water concentration are in Pro (middle school).
· With VoiceOver you can now tap Yeontan to open "Coffee for the Developer" (after a parent check).

### 1.0.6 — 2026-09-29

· New module, Everyday Math: read real-life scenes (sharing apples, passengers getting off a bus, speed from distance and time) and set up the equation. The elementary range is free; the middle-school range is Pro.
· New middle-school module, Circles & Sectors (Pro): circumference, area, sectors and cones, with answers that keep π as in the textbook.
· Yeontan, a black kitten, now lives next to the title on Home. In an adult profile, tap Yeontan to support this ad-free app with "Coffee for the Developer" (after a parent check). No features change; Yeontan wakes up and plays. In a child profile it never opens a purchase.

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## More apps by MIN SEOK KIM

- [Yeontan Books: Comics & Ebooks](https://appshunter.io/ios/app/yeontan-books-comics-and-ebooks/id6810115155)

All apps by MIN SEOK KIM: https://appshunter.io/developer/6810115157

## Related topics

[gameday math](https://appshunter.io/ios/topics/gameday-math) · [family math](https://appshunter.io/ios/topics/family-math)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-18.*