Stack61 vs Quill POS
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
Quill POS
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Quill POS is a lightweight, user-friendly point-of-sale (POS) app designed specifically for the hospitality industry. It offers a streamlined interface that simplifies order management, billing, and inventory tracking, making it ideal for restaurants, cafes, and bars. The app's cloud-based architecture ensures easy access to data and seamless integration with various devices, allowing staff to process transactions quickly and efficiently. With its focus on simplicity and speed, Quill POS helps businesses enhance customer service while maintaining operational efficiency.
Screenshots
Verdict
The clearest difference is update cadence: Stack61 at every 6 weeks against Quill POS's every 5 months. On price, ads, in-app purchases and device support 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, Quill POS every 5 months. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.
| Parameter | Stack61 | Quill POS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 60 MB | 79 MB |
| Age rating | 4+ | 17+ |
| Developer | Petro IT | Compute One Ltd |
In-app purchases
Stack61
No in-app purchases
Quill POS
No in-app purchases









