# Skylar vs Jrsys ZTP

The clearest difference is in-app purchases: Jrsys ZTP at none against Skylar's 2. Jrsys ZTP also leads on device support (4 vs 2) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Skylar sells 2 one-off in-app purchases. Jrsys ZTP asks for nothing beyond the download.

Skylar ships an update every 4 months, Jrsys ZTP every 3 months. The most recent releases landed on September 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Skylar | Jrsys ZTP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/skylar/id835813069/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 54 MB | 36 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [BroTecs Technologies, LLC.](https://appshunter.io/developer/835813072) | [JRSYS INTERNATIONAL CORP.](https://appshunter.io/developer/1070992847) |

## What reviewers say

### Skylar

[App page](https://appshunter.io/ios/app/skylar/id835813069)

This secure, standard-based mobile VoIP softphone offers high-quality calls over various networks. It features advanced call management, multi-account support, and intelligent network sensing for a smooth user experience.

**Highlights:** Advanced security settings, Intelligent network quality sensing, HD Wideband audio, Multi-tasking support, Multiple SIP account support, Call history and management, XMPP Messaging support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| G.729 Codec | $2.99 | one-time |
| Full Version | $4.99 | one-time |


### Jrsys ZTP

[App page](https://appshunter.io/ios/app/jrsys-ztp/id1443705151)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Skylar free?

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

### Is Jrsys ZTP free?

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

### Do Skylar or Jrsys ZTP have ads?

Neither Skylar nor Jrsys ZTP shows ads.

### Which is updated more often, Skylar or Jrsys ZTP?

Skylar ships an update every 4 months, and Jrsys ZTP every 3 months. Most recently, Skylar was updated on September 30, 2026 and Jrsys ZTP on October 29, 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.*