# Second Line Calling/Texting vs STN UC

The clearest difference is review sentiment: Second Line Calling/Texting at 68% against STN UC's 0%. STN UC's advantage is in-app purchases (none vs 8) and iOS requirement (11.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Second Line Calling/Texting sells 8 in-app purchases, starting at $9.99 per month. STN UC asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Second Line Calling/Texting | STN UC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (2K ratings)](https://appshunter.io/ios/app/second-line-callingtexting/id1231852034/reviews)** | — |
| Number of ratings | **2K** | — |
| Positive reviews | **67.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 54 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BinaryPattern](https://appshunter.io/developer/874400678) | [PortSIP Solutions, Inc.](https://appshunter.io/developer/426903821) |

## What reviewers say

### Second Line Calling/Texting

[App page](https://appshunter.io/ios/app/second-line-callingtexting/id1231852034)

Add a second phone number to your device for private texting and calling. Protect your personal number from spam and unwanted calls when dating, selling online, or for any project. Easily manage multiple numbers and contacts within the app.

**Highlights:** Add a second phone number, Keep personal number private, Unlimited texts and calls (premium), Create multiple numbers, Separate contacts, Burn temporary numbers, Mask caller ID

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Line | $9.99 | per month |
| Premium Number Plan | $9.99 | per month |
| Premium Number Plan Upgrade | $9.99 | per month |
| 3 Coin Pack | $2.99 | one-time |
| 8 Coin Pack | $5.99 | one-time |
| 15 Coin Pack | $9.99 | one-time |
| 25 Coin Pack | $13.99 | one-time |
| 60 Coin Pack | $27.99 | one-time |

**What reviewers like**

- 👍 Easy and convenient
- 🚀 Fast setup
- 🔒 Flexible and secure
- 💰 Good value for money
- 📱 User-friendly interface

**What reviewers complain about**

- 🐛 Occasional technical issues
- 🔍 Limited customer support
- 💸 Expensive premium plans
- 🔌 Unreliable call/text functionality

**Reported bugs**

- Dropped calls
- Failed message deliveries
- Disappearing contacts
- Billing/subscription problems

**Requested features**

- Ability to send images/videos
- More free credits/minutes
- Improved customer support channels
- Compatibility with newer OS versions


### STN UC

[App page](https://appshunter.io/ios/app/stn-uc/id1569753155)

This application functions as a SIP-based softphone, enabling users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a specific PBX system to support push notifications for incoming calls and messages, even when the app is not actively running.

**Highlights:** SIP-based softphone, Wi-Fi or 4G/LTE calls, Instant messaging, Push notifications for calls, Push notifications for messages, Interworks with PortSIP PBX

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Second Line Calling/Texting free?

Second Line Calling/Texting is free to download, with in-app purchases available.

### Is STN UC free?

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

### Do Second Line Calling/Texting or STN UC have ads?

Neither Second Line Calling/Texting nor STN UC shows ads.

### Which is updated more often, Second Line Calling/Texting or STN UC?

Second Line Calling/Texting ships an update every 2 months, and STN UC every 2 months. Most recently, Second Line Calling/Texting was updated on October 16, 2026 and STN UC on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*