# High Frontier 4 All Tutorial vs Read19

The clearest difference is in-app purchases: High Frontier 4 All Tutorial at none against Read19's 4. High Frontier 4 All Tutorial also leads on iOS requirement (16.0 vs 18.0). Read19's advantage is ads (none vs shown) and update cadence (every 2 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Read19 sells 4 in-app purchases, starting at $6.99 per month. High Frontier 4 All Tutorial asks for nothing beyond the download.

High Frontier 4 All Tutorial ships an update monthly, Read19 every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | High Frontier 4 All Tutorial | Read19 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Size | 733 MB | 16 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ion Game Design](https://appshunter.io/developer/1012297789) | [思程 陈](https://appshunter.io/developer/6786794222) |

## What reviewers say

### High Frontier 4 All Tutorial

[App page](https://appshunter.io/ios/app/high-frontier-4-all-tutorial/id6505107351)

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

**In-app purchases:** none


### Read19

[App page](https://appshunter.io/ios/app/read19/id6799068030)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KataGo Review Plus | $6.99 | per month |
| 300K Visits | $1.99 | one-time |
| 1M Visits | $3.99 | one-time |
| 3M Visits | $9.99 | one-time |


## Frequently asked questions

### Is High Frontier 4 All Tutorial free?

High Frontier 4 All Tutorial is free to download, with no in-app purchases.

### Is Read19 free?

Read19 is free to download, with in-app purchases available.

### Do High Frontier 4 All Tutorial or Read19 have ads?

High Frontier 4 All Tutorial shows ads; Read19 does not.

### Which is updated more often, High Frontier 4 All Tutorial or Read19?

High Frontier 4 All Tutorial ships an update monthly, and Read19 every 2 days. Most recently, High Frontier 4 All Tutorial was updated on October 28, 2026 and Read19 on October 29, 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.*