# Decibell vs Fast MSG

The clearest difference is update cadence: Decibell at every 3 days against Fast MSG's every 12 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Decibell sells 1 in-app purchase, starting at $19.99 per month and Fast MSG sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Decibell ships an update every 3 days, Fast MSG every 12 months. The most recent releases landed on September 8, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Decibell | Fast MSG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 12 months |
| Size | 42 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ODBS LLC](https://appshunter.io/developer/1816580215) | [Claudio Guirunas](https://appshunter.io/developer/1149103410) |

## 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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibell Pro | $19.99 | per month |


### Fast MSG

[App page](https://appshunter.io/ios/app/fast-msg/id6748307210)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.29 | one-time |


## Frequently asked questions

### Is Decibell free?

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

### Is Fast MSG free?

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

### Do Decibell or Fast MSG have ads?

Neither Decibell nor Fast MSG shows ads.

### Which is updated more often, Decibell or Fast MSG?

Decibell ships an update every 3 days, and Fast MSG every 12 months. Most recently, Decibell was updated on September 8, 2026 and Fast MSG on September 21, 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.*