# SLYFONE vs Trigintuple Calc

The clearest difference is in-app purchases: Trigintuple Calc at none against SLYFONE's 7. Trigintuple Calc also leads on update cadence (every 2 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SLYFONE sells 7 in-app purchases, starting at $14.99 per 3 months. Trigintuple Calc asks for nothing beyond the download.

SLYFONE ships an update every 6 weeks, Trigintuple Calc every 2 weeks. The most recent releases landed on October 15, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | SLYFONE | Trigintuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (789 ratings)](https://appshunter.io/ios/app/slyfone/id1504527810/reviews)** | — |
| Number of ratings | **789** | — |
| Positive reviews | 23.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 94 MB | 37 MB |
| Requires iOS | **15.0** | 15.8.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MobileSphere, Ltd](https://appshunter.io/developer/295767902) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### SLYFONE

[App page](https://appshunter.io/ios/app/slyfone/id1504527810)

Obtain a genuine US mobile number for essential verifications and communications, alongside a global eSIM for data access in over 110 countries. This app ensures privacy, facilitates international calls, and provides reliable connectivity for travel and business.

**Highlights:** Virtual US mobile number, Global eSIM for data, App and account verifications, Two-factor authentication, International calls and texts, Spam blocking, No roaming fees

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Months Plan | $14.99 | per 3 months |
| Yearly Plan | $49.99 | per year |
| 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**

- ⭐ Excellent app
- 🙌 Saved me from a problem
- 👍 Very good

**What reviewers complain about**

- 💰 Expensive subscription
- 🔒 Unsafe app with harassment
- 🐛 Non-functioning features
- 🚫 Doesn't work as advertised
- 📞 Poor call quality

**Reported bugs**

- Account temporarily unavailable
- Texts/codes not received
- Calls not working properly
- Login/sign-up issues

**Requested features**

- Fix international prefix support
- Improve call forwarding
- Add more features like Dingtone app


### Trigintuple Calc

[App page](https://appshunter.io/ios/app/trigintuple-calc/id6742363481)

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

**In-app purchases:** none


## Frequently asked questions

### Is SLYFONE free?

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

### Is Trigintuple Calc free?

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

### Do SLYFONE or Trigintuple Calc have ads?

Both SLYFONE and Trigintuple Calc show ads.

### Which is updated more often, SLYFONE or Trigintuple Calc?

SLYFONE ships an update every 6 weeks, and Trigintuple Calc every 2 weeks. Most recently, SLYFONE was updated on October 15, 2026 and Trigintuple Calc 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.*