# SLYNUMBER vs Clusterix Email

The clearest difference is review sentiment: Clusterix Email at 100% against SLYNUMBER's 33%. Clusterix Email also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 8). SLYNUMBER's advantage is ratings volume (2.6K vs 1) and chart position (#165 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SLYNUMBER sells 8 in-app purchases, starting at $10.00 per year. Clusterix Email asks for nothing beyond the download.

Clusterix Email holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: SLYNUMBER has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of SLYNUMBER's written reviews are positive against 100% of Clusterix Email's.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SLYNUMBER | Clusterix Email |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2.6K ratings)](https://appshunter.io/ios/app/slynumber/id1634197601/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clusterix-email/id6478543435/reviews)** |
| Number of ratings | **2.6K** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Subscription | **Free** |
| Best chart rank | **#165** | — |
| Size | 96 MB | 60 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MobileSphere, Ltd](https://appshunter.io/developer/295767902) | [innoscripta SE](https://appshunter.io/developer/1546207706) |

## What reviewers say

### SLYNUMBER

[App page](https://appshunter.io/ios/app/slynumber/id1634197601)

**Currently charting:** #165 Top Grossing · Social Networking (US App Store)

Get a real, private mobile number for calls and texts without a carrier contract. Protect your personal information and separate your communications for business, dating, or travel.

**Highlights:** Real mobile numbers, not VoIP, Unlimited inbound calls & texts, 100 outbound credits monthly, Privacy and anonymity, Spam blocking & do-not-disturb, AI-powered features, eSIM for global data

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Global eSIM data plan | $10.00 | per year |
| Three-Month Plan | $14.99 | per 3 months |
| Yearly Plan | $49.99 | per year |
| SLYNUMBER eSIM | $3.00 | one-time |
| 10 Dollar Credit Bundle | $10.00 | one-time |
| 25 Dollar Credit Bundle | $25.00 | one-time |
| 50 Dollar Credit Bundle | $50.00 | one-time |
| 100 Dollar Credit Bundle | $100.00 | one-time |

**What reviewers like**

- 🚀 Great value
- 💡 Useful for getting a second number
- 👍 Simple and straightforward app
- 🔒 Protects privacy and identity

**What reviewers complain about**

- 🐛 App crashes and freezes
- 🔍 Lacks key features like sending pictures and videos
- 🤖 Poor customer support and unresponsive
- 💰 Expensive compared to alternatives
- 🚫 Numbers don't work with WhatsApp and other platforms

**Reported bugs**

- App won't load past the launch screen
- Incoming calls have no audio
- Text messages fail to deliver
- Subscription issues and inability to cancel

**Requested features**

- Add ability to send and receive pictures and videos
- Improve app stability and reduce crashes
- Provide better customer support and communication
- Offer more affordable pricing options


### Clusterix Email

[App page](https://appshunter.io/ios/app/clusterix-email/id6478543435)

Streamline your communication with an advanced email client. Features include a signature editor, customizable templates, an AI assistant for composing and managing emails, and scheduled sending. Organize and view your messages with an intuitive interface.

**Highlights:** Customizable signature editor, Intuitive email editor, Diverse customizable templates, AI assistant for composing and inbox management, Scheduled email sending, User-friendly email viewing interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SLYNUMBER free?

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

### Is Clusterix Email free?

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

### Which has better reviews, SLYNUMBER or Clusterix Email?

Clusterix Email is rated higher. SLYNUMBER averages 4.5 out of 5 from 2.6K ratings, while Clusterix Email averages 5.0 from 1 ratings.

### Do SLYNUMBER or Clusterix Email have ads?

Neither SLYNUMBER nor Clusterix Email shows ads.

### Which is updated more often, SLYNUMBER or Clusterix Email?

SLYNUMBER ships an update every 2 weeks, and Clusterix Email every 2 weeks. Most recently, SLYNUMBER was updated on October 22, 2026 and Clusterix Email on October 6, 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.*