# IPST E vs คาทอลิกทำวัตร

The clearest difference is device support: คาทอลิกทำวัตร at 3 against IPST E's 1. IPST E's advantage is iOS requirement (8.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

IPST E ships an update every 7 months, คาทอลิกทำวัตร every 11 months. The most recent releases landed on May 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | IPST E | คาทอลิกทำวัตร |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 11 months |
| Size | 13 MB | 88 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) | [Daniele Mazza](https://appshunter.io/developer/1438439223) |

## What reviewers say

### IPST E

[App page](https://appshunter.io/ios/app/ipst-e-book/id772521304)

**In-app purchases:** none


### คาทอลิกทำวัตร

[App page](https://appshunter.io/ios/app/id1522855836)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IPST E free?

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

### Is คาทอลิกทำวัตร free?

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

### Do IPST E or คาทอลิกทำวัตร have ads?

Neither IPST E nor คาทอลิกทำวัตร shows ads.

### Which is updated more often, IPST E or คาทอลิกทำวัตร?

IPST E ships an update every 7 months, and คาทอลิกทำวัตร every 11 months. Most recently, IPST E was updated on May 16, 2026 and คาทอลิกทำวัตร on September 20, 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.*