# IPST Chemistry E vs AR วิทย์ ม.ปลาย

The clearest difference is update cadence: AR วิทย์ ม.ปลาย at every 5 weeks against IPST Chemistry E's every 3 months. IPST Chemistry E's advantage is iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IPST Chemistry E ships an update every 3 months, AR วิทย์ ม.ปลาย every 5 weeks. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | IPST Chemistry E | AR วิทย์ ม.ปลาย |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 14 MB | 193 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kathi Studio Co.,Ltd.](https://appshunter.io/developer/436981312) | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) |

## What reviewers say

### IPST Chemistry E

[App page](https://appshunter.io/ios/app/ipst-chemistry-e-book-atomic-structure/id1027839723)

**In-app purchases:** none


### AR วิทย์ ม.ปลาย

[App page](https://appshunter.io/ios/app/ar/id1471613632)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IPST Chemistry E free?

IPST Chemistry E is free to download, with no in-app purchases.

### Is AR วิทย์ ม.ปลาย free?

AR วิทย์ ม.ปลาย is free to download, with no in-app purchases.

### Do IPST Chemistry E or AR วิทย์ ม.ปลาย have ads?

Neither IPST Chemistry E nor AR วิทย์ ม.ปลาย shows ads.

### Which is updated more often, IPST Chemistry E or AR วิทย์ ม.ปลาย?

IPST Chemistry E ships an update every 3 months, and AR วิทย์ ม.ปลาย every 5 weeks. Most recently, IPST Chemistry E was updated on October 1, 2026 and AR วิทย์ ม.ปลาย on September 19, 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.*