# 3Sigma mobile CRM vs Build Formula OS

The clearest difference is update cadence: 3Sigma mobile CRM at every 8 days against Build Formula OS's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

3Sigma mobile CRM ships an update every 8 days, Build Formula OS every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 3Sigma mobile CRM | Build Formula OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Size | 76 MB | 40 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Vivek Rana](https://appshunter.io/developer/1704125607) | [Vshwan](https://appshunter.io/developer/1580165990) |

## What reviewers say

### 3Sigma mobile CRM

[App page](https://appshunter.io/ios/app/3sigma-mobile-crm/id6463200219)

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

**In-app purchases:** none


### Build Formula OS

[App page](https://appshunter.io/ios/app/build-formula-os/id6748576227)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3Sigma mobile CRM free?

3Sigma mobile CRM is free to download, with no in-app purchases.

### Is Build Formula OS free?

Build Formula OS is free to download, with no in-app purchases.

### Do 3Sigma mobile CRM or Build Formula OS have ads?

Neither 3Sigma mobile CRM nor Build Formula OS shows ads.

### Which is updated more often, 3Sigma mobile CRM or Build Formula OS?

3Sigma mobile CRM ships an update every 8 days, and Build Formula OS every 2 months. Most recently, 3Sigma mobile CRM was updated on October 24, 2026 and Build Formula OS on October 24, 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.*