# Place Value Unlocked — K-2 Place Value Learning App

> K-2 Place Value Learning App (iPhone/iPad app by One On One Tutoring Service, Inc..)

- Source: https://appshunter.io/ios/app/place-value-unlocked/id6770703795 (this page in markdown: same URL + `.md`)
- Developer: [One On One Tutoring Service, Inc.](https://appshunter.io/developer/1886746583)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 57 MB
- Languages: English
- Released: 2026-05-28
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/place-value-unlocked/id6770703795/reviews.md

## What is Place Value Unlocked?

Place Value Unlocked teaches K–2 students how numbers work — from grouping tens and ones all the way to hundreds, expanded form, comparing numbers, reading and writing numbers, and rounding.
Built by educators with 20+ years of classroom experience, this app uses interactive base ten blocks, visual place value mats, and a world-by-world progression to make abstract number concepts concrete and memorable.
7 Worlds of Learning:

World 1: Why We Group — discover how and why we organize numbers into tens and ones
World 2: Tens and Ones — identify the tens and ones digits in two-digit numbers
World 3: Expanded Form — break numbers into their parts (40 + 7 = 47)
World 4: Reading & Writing Numbers — connect numerals to their word forms
World 5: Comparing Numbers — use greater than, less than, and equal to
World 6: Hundreds, Tens, and Ones — extend place value understanding to three-digit numbers
World 7: Rounding — round to the nearest ten and hundred

Place Value Master Challenge:
Complete all 7 worlds and take on the ultimate 40-question timed challenge. Earn your Certificate of Achievement from One On One Tutoring Service!
Designed for Young Learners:
Every tip uses language K–2 students already know — counting by tens, adding, and grouping. No multiplication. No shortcuts. Just deep understanding built the right way.
Worlds 1 and 2 are free. Unlock all 7 worlds for a one-time purchase of $2.99.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Worlds | $2.99 | one-time |



## Version history (last 4 releases)

### 1.0.3 — 2026-06-15

Improved user experience.

### 1.0.2 — 2026-05-31

Improved user experience.

### 1.0.1 — 2026-05-30

Initial release of Place Value Unlocked. Master place value concepts through 7 interactive worlds covering tens, ones, hundreds, expanded form, reading and writing numbers, comparing numbers, and rounding. Includes the Place Value Master challenge.

### 1.0 — 2026-05-28

No release notes.

## More apps by One On One Tutoring Service, Inc.

- [Multiplication Unlocked](https://appshunter.io/ios/app/multiplication-unlocked/id6760908927)

All apps by One On One Tutoring Service, Inc.: https://appshunter.io/developer/1886746583

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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 2026-06-25.*