# Hi ABC vs Combinatorics PRO

The clearest difference is price: Hi ABC at Free against Combinatorics PRO's $1.99. Combinatorics PRO's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

Hi ABC is free to download; Combinatorics PRO costs $1.99 up front. Hi ABC sells 1 one-off in-app purchase. Combinatorics PRO asks for nothing beyond the download.

Hi ABC ships an update every 6 weeks, Combinatorics PRO monthly. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Hi ABC | Combinatorics PRO |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hi-abc/id1673179606/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 179 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [浩东 邱](https://appshunter.io/developer/1493267968) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Hi ABC

[App page](https://appshunter.io/ios/app/hi-abc/id1673179606)

This app offers early English learning for toddlers and beginners. It combines text, pictures, and audio to teach common word pronunciations and meanings across various categories. The interface is simple and user-friendly for a comfortable learning experience.

**Highlights:** Interactive word pronunciation, Picture-based word learning, Categorized word learning, Multilingual support, Simple and intuitive interface

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unlock all cards | $2.99 | one-time |


### Combinatorics PRO

[App page](https://appshunter.io/ios/app/combinatorics-pro/id6472449368)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hi ABC free?

Hi ABC is free to download, with in-app purchases available.

### Is Combinatorics PRO free?

Combinatorics PRO costs $1.99, with no in-app purchases.

### Do Hi ABC or Combinatorics PRO have ads?

Neither Hi ABC nor Combinatorics PRO shows ads.

### Which is updated more often, Hi ABC or Combinatorics PRO?

Hi ABC ships an update every 6 weeks, and Combinatorics PRO monthly. Most recently, Hi ABC was updated on October 5, 2026 and Combinatorics PRO on October 8, 2026.

---

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