# Second Phone, 2nd Call Number vs Builder Cs

The clearest difference is in-app purchases: Builder Cs at none against Second Phone, 2nd Call Number's 5. Builder Cs also leads on update cadence (weekly vs every 7 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Second Phone, 2nd Call Number sells 5 in-app purchases, starting at $6.99 per 7 days. Builder Cs asks for nothing beyond the download.

Second Phone, 2nd Call Number ships an update every 7 months, Builder Cs weekly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Second Phone, 2nd Call Number | Builder Cs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (9 ratings)](https://appshunter.io/ios/app/second-phone-2nd-call-number/id6477942025/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 53 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PIXEL QUEST LIMITED](https://appshunter.io/developer/1796137540) | [Darwish Mahmoud](https://appshunter.io/developer/1704844663) |

## What reviewers say

### Second Phone, 2nd Call Number

[App page](https://appshunter.io/ios/app/second-phone-2nd-call-number/id6477942025)

Instantly set up a second phone number on your device without needing an extra SIM card. This app provides a private line for personal calls, contact management, and business needs, protecting your main number's privacy.

**Highlights:** Virtual second phone number, No additional SIM card required, Private line for calls, Contact management, Instant setup

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Virtual phone numbers | $6.99 | per 7 days |
| 2 Line Phone: 2nd Call Number | $6.99 | one-time |
| Second Phone, 2nd Call Number | $17.99 | one-time |
| 2 Line Phone: 2nd Call Number | $19.99 | one-time |
| 2 Line Phone: 2nd Call Number | $69.99 | one-time |


### Builder Cs

[App page](https://appshunter.io/ios/app/builder-cs/id6736469706)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Second Phone, 2nd Call Number free?

Second Phone, 2nd Call Number is free to download, with in-app purchases available.

### Is Builder Cs free?

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

### Do Second Phone, 2nd Call Number or Builder Cs have ads?

Neither Second Phone, 2nd Call Number nor Builder Cs shows ads.

### Which is updated more often, Second Phone, 2nd Call Number or Builder Cs?

Second Phone, 2nd Call Number ships an update every 7 months, and Builder Cs weekly. Most recently, Second Phone, 2nd Call Number was updated on October 15, 2026 and Builder Cs on October 7, 2026.

---

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