# HiReader vs ReadPDB

The clearest difference is in-app purchases: ReadPDB at none against HiReader's 3. ReadPDB also leads on update cadence (daily vs every 9 days). HiReader's advantage is iOS requirement (15.5 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. HiReader sells 3 in-app purchases, starting at $1.99 per month. ReadPDB asks for nothing beyond the download.

HiReader ships an update every 9 days, ReadPDB daily. The most recent releases landed on October 20, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | HiReader | ReadPDB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/hireader-epub-and-pdf-reader/id6737322638/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 13 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [云根 付](https://appshunter.io/developer/1696464801) | [Jaime Martin Lozano](https://appshunter.io/developer/1766116629) |

## What reviewers say

### HiReader

[App page](https://appshunter.io/ios/app/hireader-epub-and-pdf-reader/id6737322638)

Organize and read your local ebooks with a feature-rich reader. Supports multiple formats, custom themes, and detailed reading statistics. Sync your progress across devices.

**Highlights:** Multi-format ebook support, Organize books into groups, Customizable reading layout and themes, Detailed reading statistics, Cloud sync for progress and files, Flexible document import options

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HiReader Pro | $1.99 | per month |
| HiReader Pro | $9.99 | per year |
| HiReader Pro | $19.99 | one-time |


### ReadPDB

[App page](https://appshunter.io/ios/app/readpdb/id6797103554)

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

**In-app purchases:** none


## Frequently asked questions

### Is HiReader free?

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

### Is ReadPDB free?

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

### Do HiReader or ReadPDB have ads?

Neither HiReader nor ReadPDB shows ads.

### Which is updated more often, HiReader or ReadPDB?

HiReader ships an update every 9 days, and ReadPDB daily. Most recently, HiReader was updated on October 20, 2026 and ReadPDB on October 4, 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.*