# Decibell vs Second Number for Call

The clearest difference is in-app purchases: Second Number for Call at none against Decibell's 4. Decibell's advantage is ads (none vs shown) and update cadence (every 3 days vs every 8 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Decibell sells 4 in-app purchases, starting at $14.99 per month. Second Number for Call asks for nothing beyond the download.

Decibell ships an update every 3 days, Second Number for Call every 8 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Decibell | Second Number for Call |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (35 ratings)](https://appshunter.io/ios/app/second-number-for-call-text/id6791867532/reviews)** |
| Number of ratings | — | **35** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 8 days |
| Monetization | — | Ad-supported |
| Size | 52 MB | 21 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ODBS LLC](https://appshunter.io/developer/1816580215) | [xenia diaz](https://appshunter.io/developer/6791867534) |

## What reviewers say

### Decibell

[App page](https://appshunter.io/ios/app/decibell-second-phone-number/id6747923627)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibell Pro | $14.99 | per month |
| Decibell Pro | $19.99 | per month |
| Decibell Pro (Yearly) | $119.99 | per year |
| Decibell Pro (Yearly) | $179.99 | per year |


### Second Number for Call

[App page](https://appshunter.io/ios/app/second-number-for-call-text/id6791867532)

Obtain a fully functional second phone line instantly on your iPhone to protect your personal identity. Filter spam, manage professional and personal contacts separately, and identify unknown callers with a smart caller ID search.

**Highlights:** Get a 2nd phone number instantly, Smart Caller ID Search, Direct Dial Pad, Integrated Contact List, Search History Tracker, Effortless Number Management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibell free?

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

### Is Second Number for Call free?

Second Number for Call is free to download, with no in-app purchases.

### Do Decibell or Second Number for Call have ads?

Second Number for Call shows ads; Decibell does not.

### Which is updated more often, Decibell or Second Number for Call?

Decibell ships an update every 3 days, and Second Number for Call every 8 days. Most recently, Decibell was updated on November 5, 2026 and Second Number for Call on November 10, 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.*