# SIN PIN vs Grrr

The clearest difference is device support: SIN PIN at 3 against Grrr's —. Grrr's advantage is iOS requirement (12.4 vs 15.1). On price 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.

## The numbers

| Metric | SIN PIN | Grrr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/sin-pin/id1439216848/reviews)** | — |
| Number of ratings | **3.9K** | — |
| Positive reviews | 82.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 13 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 96 MB | 24 MB |
| Requires iOS | 15.1 | **12.4** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Look International Inc](https://appshunter.io/developer/1171876615) | [Missa Constant Pierre BAIH](https://appshunter.io/developer/1687585247) |

## 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


### Grrr

[App page](https://appshunter.io/ios/app/grrr/id6449052718)

**In-app purchases:** none


## Frequently asked questions

### Is SIN PIN free?

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

### Is Grrr free?

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

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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.*