# Numberblocks World vs TddStudy

The clearest difference is in-app purchases: TddStudy at none against Numberblocks World's 2. Numberblocks World's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Numberblocks World sells 2 in-app purchases, starting at $7.99 per month. TddStudy asks for nothing beyond the download.

Numberblocks World ships an update every 3 weeks, TddStudy every 2 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Numberblocks World | TddStudy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (343 ratings)](https://appshunter.io/ios/app/numberblocks-world/id1520827387/reviews)** | — |
| Number of ratings | **343** | — |
| Positive reviews | 44.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 640 MB | 12 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Blue-Zoo](https://appshunter.io/developer/938119031) | [HYOJUNG KIM](https://appshunter.io/developer/1879759534) |

## What reviewers say

### Numberblocks World

[App page](https://appshunter.io/ios/app/numberblocks-world/id1520827387)

This app offers an animated adventure to help children master numbers through engaging videos and games. It provides a fun and exciting way to build confidence and enjoyment in mathematics, aligned with early years curricula.

**Highlights:** 100+ math-themed episodes, Numeracy games and quizzes, Progressive learning levels, Subitising and counting games, Ad-free and COPPA/GDPR-K compliant

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $7.99 | per month |
| Yearly Subscription | $29.99 | per year |

**What reviewers like**

- 🎨 Lovely game
- 🎨 Educative
- 🎨 Awesome
- 🎨 Fantastic math program
- 🎨 Good app

**What reviewers complain about**

- 🐛 Constant freezing and crashing
- 🐛 Glitchy
- 🔒 Subscription required to access full content
- 🔒 Paid app with subscription model
- 🐛 Videos not working

**Reported bugs**

- Freezing and crashing
- Videos not loading
- Glitches in games and activities
- Subscription not working properly
- Incorrect answers in games

**Requested features**

- Add new Numberblocks characters (42, 48, 54, 56, 63, 72)
- Offline mode
- Ability to reset progress
- Subtitles/captions for videos
- More games and activities


### TddStudy

[App page](https://appshunter.io/ios/app/tddstudy/id6784594223)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Numberblocks World free?

Numberblocks World is free to download, with in-app purchases available.

### Is TddStudy free?

TddStudy is free to download, with no in-app purchases.

### Do Numberblocks World or TddStudy have ads?

Neither Numberblocks World nor TddStudy shows ads.

### Which is updated more often, Numberblocks World or TddStudy?

Numberblocks World ships an update every 3 weeks, and TddStudy every 2 weeks. Most recently, Numberblocks World was updated on November 9, 2026 and TddStudy on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*