# 9.99 — Math trainer

> Math trainer (iPhone/iPad app by Kozodoy Ivan.)

- Source: https://appshunter.io/ios/app/999/id1579866540 (this page in markdown: same URL + `.md`)
- Developer: [Kozodoy Ivan](https://appshunter.io/developer/874862332)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 14 MB
- Languages: English, French, German, Hindi, Portuguese, Russian, Chinese, Spanish, Swedish, Turkish
- Released: 2022-03-01
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/999/id1579866540/reviews.md

## What is 9.99?

Setting: you're at the grocery store. It's your turn in line. You need to make sure you have enough cash on you.
                                
That's what 9.99 is all about!
                                
It's a math puzzle taken straight out of real life

SO HOW DO YOU PLAY?          

- Move grocery tiles to earn coins
- The yellow price tag shows you how many coins you need
- Collect them all, and the item is yours
- Move groceries up, down, left, and right, but not diagonally
- You can't go back to tiles you've already finished either
- But you don't have a time limit
- Collect all the groceries and move on to the next level

Train your brain so you can keep your cool in front of the clerk!

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Disable ads | $0.99 | one-time |



## Version history (last 5 releases)

### 0.9.6 — 2025-04-14

tech update

### 0.9.5 — 2024-04-21

technical update

### 0.9.4 — 2023-07-18

new design (finally!)

### 0.9.3 — 2022-07-28

all levels are unlocked!

### 0.9.2 — 2022-03-09

bug fixes

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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 2026-05-16.*