# Stack61 vs Inventor

The clearest difference is iOS requirement: Stack61 at 13.0 against Inventor's 16.4. 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.

Stack61 ships an update every 6 weeks, Inventor every 3 weeks. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Stack61 | Inventor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/stack61-warehouse-inventory/id1395389915/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 60 MB | 52 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Petro IT](https://appshunter.io/developer/1273712433) | [Inventor-e](https://appshunter.io/developer/1645887250) |

## What reviewers say

### Stack61

[App page](https://appshunter.io/ios/app/stack61-warehouse-inventory/id1395389915)

Streamline warehouse operations with this mobile inventory management solution. Automate tracking, logging, and searching of materials from your device, with features for QR code tagging, inspections, and live reporting.

**Highlights:** Automated inventory tracking, QR code item tagging, Material usage logging, Mobile inventory search, Inspection checklists, Live stock reporting

**In-app purchases:** none


### Inventor

[App page](https://appshunter.io/ios/app/inventor-e-smartstores/id1645887248)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack61 free?

Stack61 is free to download, with no in-app purchases.

### Is Inventor free?

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

### Do Stack61 or Inventor have ads?

Neither Stack61 nor Inventor shows ads.

### Which is updated more often, Stack61 or Inventor?

Stack61 ships an update every 6 weeks, and Inventor every 3 weeks. Most recently, Stack61 was updated on September 26, 2026 and Inventor on October 10, 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.*