# symlex vs SilverDialer

The clearest difference is ads: SilverDialer at none against symlex's shown. SilverDialer also leads on monetization model (free vs ad-supported). symlex's advantage is review sentiment (50% vs 25%) and iOS requirement (10.3 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

symlex ships an update every 6 weeks, SilverDialer every 2 months. The most recent releases landed on June 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | symlex | SilverDialer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (5 ratings)](https://appshunter.io/ios/app/silverdialer/id1416440917/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 28 MB | 88 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Spirnytel Private Limited](https://appshunter.io/developer/591033046) | [REVE Systems (S) Pte. Ltd.](https://appshunter.io/developer/445338530) |

## What reviewers say

### symlex

[App page](https://appshunter.io/ios/app/symlex/id1108402061)

Make affordable voice calls worldwide with exceptional clarity. This app utilizes your iPhone contacts and offers features like a built-in tunnel to bypass VoIP blockades, ensuring connectivity through various networks. Track call costs, time, and status with ease.

**Highlights:** Worldwide voice calls, Crystal clear voice quality, Built-in tunnel for VoIP blockades, Uses iPhone contacts, Call cost and time logs, Peer-to-peer call support

**Features:** macOS Compatibility

**In-app purchases:** none


### SilverDialer

[App page](https://appshunter.io/ios/app/silverdialer/id1416440917)

Make affordable international calls using your iPhone contacts. Enjoy crystal-clear quality and low rates for VoIP calls over Wi-Fi or cellular data. Track call history and balance information easily.

**Highlights:** VoIP calls, Uses iPhone contacts, Low international rates, WIFI, 4G/3G, 2G EDGE connectivity, Balance information, Call status logs

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

**In-app purchases:** none


## Frequently asked questions

### Is symlex free?

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

### Is SilverDialer free?

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

### Do symlex or SilverDialer have ads?

symlex shows ads; SilverDialer does not.

### Which is updated more often, symlex or SilverDialer?

symlex ships an update every 6 weeks, and SilverDialer every 2 months. Most recently, symlex was updated on June 4, 2026 and SilverDialer on September 20, 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.*