# iSilo vs Astrill VPN Client

The clearest difference is price: Astrill VPN Client at Free against iSilo's $9.99. Astrill VPN Client also leads on ratings volume (608 vs 50). iSilo's advantage is in-app purchases (none vs 2) and review sentiment (51% vs 24%). On rating, ads, device support and iOS requirement there is nothing between them.

Astrill VPN Client is free to download; iSilo costs $9.99 up front. Astrill VPN Client sells 2 one-off in-app purchases. iSilo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.8 for iSilo against 3.7 for Astrill VPN Client. That said, the two scores are not equally well evidenced: Astrill VPN Client has 608 ratings behind it against 50, so its average is the more settled of the two. Written reviews are what separate them: 51% of iSilo's written reviews are positive against 24% of Astrill VPN Client's.

iSilo ships an update every 3 weeks, Astrill VPN Client every 4 months. Both last shipped on September 28, 2026.

## The numbers

| Metric | iSilo | Astrill VPN Client |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.8 (50 ratings)](https://appshunter.io/ios/app/isilo/id284979163/reviews)** | [3.7 (608 ratings)](https://appshunter.io/ios/app/astrill-vpn-client/id572953702/reviews) |
| Number of ratings | 50 | **608** |
| Positive reviews | **50.6% of reviews** | 23.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#158** | — |
| Size | 13 MB | 17 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DC & Co.](https://appshunter.io/developer/284947607) | [Veloxee Corp.](https://appshunter.io/developer/1657024325) |

## What reviewers say

### iSilo

[App page](https://appshunter.io/ios/app/isilo/id284979163)

**Currently charting:** #158 Top Paid · Productivity (US App Store)

Read various document formats including iSilo, Palm Doc, and plain text. Access a vast library of content, organize your files, and customize viewing options for a personalized reading experience. Transfer documents easily via USB, Wi-Fi, or web download.

**Highlights:** Supports iSilo, Palm Doc, and plain text formats, Extensive document library and creation tools, Organize documents with categories and favorites, Customizable viewing options (font, colors, themes), Autoscroll, full-screen, and orientation support, Text search, copy, and annotation, Multiple document transfer methods (USB, Wi-Fi, Web)

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

**In-app purchases:** none

**What reviewers like**

- 💻 Works well with Christian books
- 📚 Excellent for reading documents with embedded hyperlinks
- ⚡ Fast and smooth on many devices
- 🙌 Hands down a life-saving app
- 🏆 Basic but wonderful functionality

**What reviewers complain about**

- 🐛 Crashes upon opening
- 🐛 Unable to download new material since 2017
- 🐛 Crashes when trying to open code-protected file
- 🐛 Scrolling issues and performance problems
- 🤖 Outdated and abandoned by developers

**Reported bugs**

- Crashes when trying to open certain file formats
- Displaying issues with Palm format (PDB) files
- Inability to download files from Dropbox
- Text going off-screen after recent updates
- Bookmarks and annotations not syncing across devices

**Requested features**

- Add dark mode feature
- Improve text highlighting and annotation capabilities
- Implement cloud sync and cross-device support
- Modernize the user interface
- Add support for iOS Files app


### Astrill VPN Client

[App page](https://appshunter.io/ios/app/astrill-vpn-client/id572953702)

Secure your mobile device's internet connection with military-grade encryption. Access servers in over 60 countries and enjoy features like "Always On" and "Smart Mode" for optimized performance and privacy.

**Highlights:** One-click VPN connection, Servers in 110+ cities, 60+ countries, Military-grade encryption, Always On VPN mode, Smart Mode to exclude local sites, Unlimited data transfer

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $29.99 | one-time |
| 1 year | $179.99 | one-time |

**What reviewers like**

- 🚀 Fast and reliable connection
- 🔒 Stable and secure VPN
- 👍 Works well in China
- 💡 Comprehensive server options

**What reviewers complain about**

- 🐛 Buggy and unreliable mobile app
- 🔋 Drains battery quickly on mobile
- 👎 Inconsistent and unstable connectivity
- 💰 Overpriced for the quality

**Reported bugs**

- Frequent disconnections and inability to turn off VPN
- Login screen freezes and crashes
- Incompatibility issues with newer iOS versions

**Requested features**

- Improved mobile app with better stability and user experience
- More transparent communication about service disruptions
- Loyalty discounts for long-term subscribers


## Frequently asked questions

### Is iSilo free?

iSilo costs $9.99, with no in-app purchases.

### Is Astrill VPN Client free?

Astrill VPN Client is free to download, with in-app purchases available.

### Which has better reviews, iSilo or Astrill VPN Client?

iSilo is rated higher. iSilo averages 3.8 out of 5 from 50 ratings, while Astrill VPN Client averages 3.7 from 608 ratings.

### Do iSilo or Astrill VPN Client have ads?

Neither iSilo nor Astrill VPN Client shows ads.

### Which is updated more often, iSilo or Astrill VPN Client?

iSilo ships an update every 3 weeks, and Astrill VPN Client every 4 months. Most recently, iSilo was updated on September 28, 2026 and Astrill VPN Client on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*