# ETW Cloud PBX vs Formula Calculator #

The clearest difference is in-app purchases: ETW Cloud PBX at none against Formula Calculator #'s 4. Formula Calculator #'s advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Formula Calculator # sells 4 one-off in-app purchases. ETW Cloud PBX asks for nothing beyond the download.

## The numbers

| Metric | ETW Cloud PBX | Formula Calculator # |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/formula-calculator/id6504839903/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 67 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [WEBSPRIX IT SOLUTIONS PLC](https://appshunter.io/developer/1652049622) | [威 刘](https://appshunter.io/developer/1465235012) |

## What reviewers say

### ETW Cloud PBX

[App page](https://appshunter.io/ios/app/etw-cloud-pbx/id6444135532)

**In-app purchases:** none


### Formula Calculator #

[App page](https://appshunter.io/ios/app/formula-calculator/id6504839903)

Perform calculations with a vast library of built-in formulas or create your own. Save and sync custom formulas to the cloud for easy access across devices. Includes a comprehensive scientific calculator.

**Highlights:** Extensive built-in calculation formulas, Create and save custom formulas, Cloud synchronization for custom formulas, Share custom formulas with others, Comprehensive scientific calculator

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month subscription | $1.49 | one-time |
| 3 months subscription | $2.49 | one-time |
| 6 months subscription | $3.49 | one-time |
| 1 year subscription | $4.49 | one-time |


## Frequently asked questions

### Is ETW Cloud PBX free?

ETW Cloud PBX is free to download, with no in-app purchases.

### Is Formula Calculator # free?

Formula Calculator # is free to download, with in-app purchases available.

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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.*