Stack61 vs Inventor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stack61
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.
- Automated inventory tracking
- QR code item tagging
- Material usage logging
- Mobile inventory search
- Inspection checklists
- Live stock reporting
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Stack61 is an intelligent warehouse and inventory management solution, hosted by Petro IT on a secure cloud and offered as a SaaS subscription. Automate day-to-day inventory operations by accessing material source documentation, tagging, logging, and tracking material usage, and searching for inventory data available on your mobile device; freedom from being logged into an office system. Make your inventory management mobile and more accessible using Stack61. Easy steps of Stack 61’s Intelligent Inventory Management 1) Log material inventory and optionally also print individual QR codes for each item 2) Issue material receipt, and transfer items from one location to another 3) View Data reports on our web portal Features of Stack61 Inventory Management * Enables user to collect material and attribute information on a mobile application and attach required documentation. * Allows the user to uniquely tag each item or material using a QR code. * Enables inspection using material specific inspection checklists for ensuring completeness. * Leverages company standards and codes to align with company database standards. * Damage/Quarantine inspection process with source documentation. * Track manufacturer to Use movement history on all material. * Provides accurate online stock records of company warehouses and storage yards. * Live reporting provides oversight on material inventory. * Ability to reserve and issue material for projects. Why use Stack 61? * Complete inventory management system customisable according to your materials. * Best iOS inventory management app with intelligent inventory algorithms. * Stack61 is your go-to unique inventory management system for everyday operations. * Provides complete control over your inventory. * Provide customers with excellent service by extracting appropriate documents to backup customer manufacturing documentation immediately, as all records are linked to each material. Use Stack61 to take complete control of your inventory management. Share your experience with Stack61 at info@petroit.com
Inventor
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The SmartStores solution family enables customers to effectively manage and control usage of indirect material in both storeroom environments and van stock management. It provides realtime enterprise wide visibility and control over your indirect materials to make sure that you are getting the most out of your indirect materials investment. Inventor-e SmartVan is a stock management solution that enables customers to effectively manage and control usage of indirect material on vans. It comprises a SmartVan iOS application that is downloaded to a compliant device with NFC (Near Field Communication) capability. This is linked in real time through 3G/4G to Inventor-e’s cloud-based SourcererTM software. The SmartVan App allows individual users to issue items to themselves or against a job code. The user logs in with their PIN. If job codes are required for allocation, then they are preloaded into Sourcerer and automatically appear on the user’s screen when logged in. If job codes are used, SmartVan will prevent items being issued unless a job code has been selected. The user then simply taps the phone against an Inventor-e NFC tag on the appropriate product bin - this creates the pick list of items and allows the user to enter quantities required. When the list is complete the user ends the transaction by tapping ‘Confirm Items Issued’. To use this application you need to have a user account setup in Sourcerer. Your device will need to be activated before it can connect to Sourcerer.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Stack61 | Inventor |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 60 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Petro IT | Inventor-e |
In-app purchases
Stack61
No in-app purchases
Inventor
No in-app purchases
Questions
Is Stack61 free?
Is Inventor free?
Do Stack61 or Inventor have ads?
Which is updated more often, Stack61 or Inventor?
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