# PTTEP E vs Storius Reader

The clearest difference is update cadence: PTTEP E at every 3 months against Storius Reader's every 15 months. Storius Reader's advantage is iOS requirement (11.0 vs 14.0). 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.

PTTEP E ships an update every 3 months, Storius Reader every 15 months. The most recent releases landed on September 19, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | PTTEP E | Storius Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/storius-reader/id6449264883/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | — | Free |
| Size | 25 MB | 41 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [BOOKDOSE COMPANY LIMITED](https://appshunter.io/developer/459445000) | [BookFunnel](https://appshunter.io/developer/1479438824) |

## What reviewers say

### PTTEP E

[App page](https://appshunter.io/ios/app/pttep-e-library/id892711615)

**Features:** macOS Compatibility

**In-app purchases:** none


### Storius Reader

[App page](https://appshunter.io/ios/app/storius-reader/id6449264883)

Organize and read your Storius books in a single library. Customize your reading experience with adjustable fonts and spacing. Enjoy a built-in audiobook player with playback controls and a sleep timer.

**Highlights:** Centralized book management, Customizable reading settings, Built-in audiobook player, Adjustable playback speed, Cross-device syncing, Sleep timer

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PTTEP E free?

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

### Is Storius Reader free?

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

### Do PTTEP E or Storius Reader have ads?

Neither PTTEP E nor Storius Reader shows ads.

### Which is updated more often, PTTEP E or Storius Reader?

PTTEP E ships an update every 3 months, and Storius Reader every 15 months. Most recently, PTTEP E was updated on September 19, 2026 and Storius Reader on August 15, 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.*