# SOS Inventory Software vs OIS Pro

The clearest difference is rating: SOS Inventory Software at 4.2 against OIS Pro's 3.8. SOS Inventory Software also leads on ratings volume (82 vs 12). OIS Pro's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

SOS Inventory Software holds the better App Store score, 4.2 against 3.8. That said, the two scores are not equally well evidenced: SOS Inventory Software has 82 ratings behind it against 12, so its average is the more settled of the two.

SOS Inventory Software ships an update every 6 weeks, OIS Pro monthly. The most recent releases landed on September 2, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | SOS Inventory Software | OIS Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (82 ratings)](https://appshunter.io/ios/app/sos-inventory-software/id1399703758/reviews)** | [3.8 (12 ratings)](https://appshunter.io/ios/app/ois-pro/id1601564468/reviews) |
| Number of ratings | **82** | 12 |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 17 MB | 165 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Saddle Oak Software](https://appshunter.io/developer/1399703757) | [Orders In Seconds, Inc.](https://appshunter.io/developer/411806858) |

## What reviewers say

### SOS Inventory Software

[App page](https://appshunter.io/ios/app/sos-inventory-software/id1399703758)

Manage inventory, manufacturing, and sales with this comprehensive business control program. It offers detailed tracking of stock, orders, and customers, with unique mobile features for on-the-go counts and pricing checks. Designed for small businesses, it provides powerful functionality at a cost-effective price.

**Highlights:** Inventory tracking, Manufacturing management, Sales order processing, Mobile barcode scanning, Physical inventory counts, QBO integration, Reporting options

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

**In-app purchases:** none


### OIS Pro

[App page](https://appshunter.io/ios/app/ois-pro/id1601564468)

This sales order management tool helps wholesale distributors and manufacturers streamline on-the-go sales. It features a digital product catalog, real-time inventory, and payment processing, empowering field sales reps and managers with essential data and efficient route management.

**Highlights:** Create and send orders instantly, Digital product catalog with pricing, Accept payments on the spot, Real-time inventory access, Offline order writing capability, Route management for store visits, End-of-day sales reporting

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SOS Inventory Software free?

SOS Inventory Software is free to download, with no in-app purchases.

### Is OIS Pro free?

OIS Pro is free to download, with no in-app purchases.

### Which has better reviews, SOS Inventory Software or OIS Pro?

SOS Inventory Software is rated higher. SOS Inventory Software averages 4.2 out of 5 from 82 ratings, while OIS Pro averages 3.8 from 12 ratings.

### Do SOS Inventory Software or OIS Pro have ads?

Neither SOS Inventory Software nor OIS Pro shows ads.

### Which is updated more often, SOS Inventory Software or OIS Pro?

SOS Inventory Software ships an update every 6 weeks, and OIS Pro monthly. Most recently, SOS Inventory Software was updated on September 2, 2026 and OIS Pro on July 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*