# SIN PIN vs Dark18

The clearest difference is review sentiment: SIN PIN at 83% against Dark18's 40%. SIN PIN also leads on rating (4.8 vs 3.8) and in-app purchases (none vs 6). Dark18's advantage is update cadence (weekly vs every 13 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Dark18 sells 6 in-app purchases, starting at $4.99 per 7 days. SIN PIN asks for nothing beyond the download.

SIN PIN holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: SIN PIN has 3.9K ratings behind it against 165, so its average is the more settled of the two. Written reviews point the same way: 83% of SIN PIN's written reviews are positive against 40% of Dark18's.

SIN PIN ships an update every 13 months, Dark18 weekly. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SIN PIN | Dark18 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/sin-pin/id1439216848/reviews)** | [3.8 (165 ratings)](https://appshunter.io/ios/app/dark18/id6749346497/reviews) |
| Number of ratings | **3.9K** | 165 |
| Positive reviews | **82.9% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 96 MB | 130 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Look International Inc](https://appshunter.io/developer/1171876615) | [Ana Lucila Gomez Navarro](https://appshunter.io/developer/1830136813) |

## What reviewers say

### SIN PIN

[App page](https://appshunter.io/ios/app/sin-pin/id1439216848)

Easily stay connected with loved ones globally. Make high-quality international calls, recharge prepaid mobile phones, and purchase calling packages. Enjoy special promotions and manage your account with secure, hassle-free payments.

**Highlights:** International calling service, Recharge prepaid mobile phones, Purchase calling packages, Auto recharge setup, Transaction history, Promotions for favorite countries, Multi-language support

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast and efficient
- 💰 Affordable rates
- 🌍 Convenient international recharges
- 📞 Clear call quality

**What reviewers complain about**

- 🐛 App crashes and bugs
- ⚠️ Unreliable service
- 🤖 Poor customer support
- 🔑 Issues with login and account access

**Reported bugs**

- App not working on iPhone 11
- App freezing and going blank

**Requested features**

- Update phone number feature
- Improved app stability and performance


### Dark18

[App page](https://appshunter.io/ios/app/dark18/id6749346497)

A private messenger offering secure end-to-end encrypted chats, HD voice and video calls, and community groups. Share updates through stories that disappear after 24 hours, all within a sleek, dark-themed interface. It's designed for users who prioritize privacy and freedom in their communication.

**Highlights:** End-to-end encrypted messaging, HD voice and video calls, Private and public groups, 24-hour disappearing stories, Dark-themed interface, Secure sync across devices

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Monthly Premium Access | $8.99 | per month |
| Yearly Premium Access | $90.99 | per year |
| Weekly Premium Access | $5.99 | one-time |
| Monthly Premium Access | $8.99 | one-time |
| Yearly Premium Access | $99.99 | one-time |


## Frequently asked questions

### Is SIN PIN free?

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

### Is Dark18 free?

Dark18 is free to download, with in-app purchases available.

### Which has better reviews, SIN PIN or Dark18?

SIN PIN is rated higher. SIN PIN averages 4.8 out of 5 from 3.9K ratings, while Dark18 averages 3.8 from 165 ratings.

### Do SIN PIN or Dark18 have ads?

Dark18 shows ads; SIN PIN does not.

### Which is updated more often, SIN PIN or Dark18?

SIN PIN ships an update every 13 months, and Dark18 weekly. Most recently, SIN PIN was updated on October 14, 2026 and Dark18 on October 12, 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.*