# Pulse Phone by SIPSTACK vs Second Phone Number 2nd Line

The clearest difference is ads: Pulse Phone by SIPSTACK at none against Second Phone Number 2nd Line's shown. Pulse Phone by SIPSTACK also leads on update cadence (every 2 weeks vs every 3 weeks) and device support (3 vs 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.

Pulse Phone by SIPSTACK ships an update every 2 weeks, Second Phone Number 2nd Line every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Pulse Phone by SIPSTACK | Second Phone Number 2nd Line |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (18 ratings)](https://appshunter.io/ios/app/second-phone-number-2nd-line/id6803342479/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 45 MB | 46 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SIPSTACK](https://appshunter.io/developer/1895284376) | [Mindspark Studio](https://appshunter.io/developer/6803341357) |

## What reviewers say

### Pulse Phone by SIPSTACK

[App page](https://appshunter.io/ios/app/pulse-phone-by-sipstack/id6763370158)

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

**In-app purchases:** none


### Second Phone Number 2nd Line

[App page](https://appshunter.io/ios/app/second-phone-number-2nd-line/id6803342479)

Obtain a secondary phone number for private calls, texts, and SMS verification. Ideal for business, online sign-ups, and maintaining personal number privacy with instant code notifications.

**Highlights:** Get a second phone number, Daily check-in for credits, SMS verification, Privacy and security, Fast activation, Instant SMS code notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is Pulse Phone by SIPSTACK free?

Pulse Phone by SIPSTACK is free to download, with no in-app purchases.

### Is Second Phone Number 2nd Line free?

Second Phone Number 2nd Line is free to download, with no in-app purchases.

### Do Pulse Phone by SIPSTACK or Second Phone Number 2nd Line have ads?

Second Phone Number 2nd Line shows ads; Pulse Phone by SIPSTACK does not.

### Which is updated more often, Pulse Phone by SIPSTACK or Second Phone Number 2nd Line?

Pulse Phone by SIPSTACK ships an update every 2 weeks, and Second Phone Number 2nd Line every 3 weeks. Most recently, Pulse Phone by SIPSTACK was updated on October 31, 2026 and Second Phone Number 2nd Line on October 31, 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.*