# Engage Machine vs Decibell

The clearest difference is in-app purchases: Engage Machine at none against Decibell's 2. Engage Machine also leads on iOS requirement (13.0 vs 17.0). Decibell's advantage is update cadence (every 3 days vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Decibell sells 2 in-app purchases, starting at $19.99 per month. Engage Machine asks for nothing beyond the download.

Engage Machine ships an update every 9 months, Decibell every 3 days. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Engage Machine | Decibell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/engage-machine/id1506726175/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 99 MB | 52 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Winterbourne Media Agency, LLC](https://appshunter.io/developer/1506726174) | [ODBS LLC](https://appshunter.io/developer/1816580215) |

## What reviewers say

### Engage Machine

[App page](https://appshunter.io/ios/app/engage-machine/id1506726175)

Manage your business operations with a comprehensive dashboard, communication tools, and opportunity tracking. Schedule appointments, manage contacts, and view key business statistics all from your device.

**Highlights:** Business statistics dashboard, Pipeline performance tracking, Task management, SMS and email communication, Opportunity card management, Appointment scheduling, Contact management

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibell

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

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

**In-app purchases (2)**

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


## Frequently asked questions

### Is Engage Machine free?

Engage Machine is free to download, with no in-app purchases.

### Is Decibell free?

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

### Do Engage Machine or Decibell have ads?

Neither Engage Machine nor Decibell shows ads.

### Which is updated more often, Engage Machine or Decibell?

Engage Machine ships an update every 9 months, and Decibell every 3 days. Most recently, Engage Machine was updated on October 10, 2026 and Decibell on October 28, 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.*