Comparison

Stack61 vs tacStock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Automated inventory tracking
  • QR code item tagging
  • Material usage logging
  • Mobile inventory search
  • Inspection checklists
  • Live stock reporting
Read full description

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

About

tacStock

Features
Read full description

tacStock is an application from tacoss.eMOBILE for mobile access to selected data from tacoss.eTRADE via tablets and smartphones. This mobile application supports you in your storage bin management. With this app you perform efficiently and transparently necessary tasks in the warehouse in goods receipt, goods issue, and inventory. A wide variety of functionalities from picking to stock transfer, repackaging, article control, storage bin search, and check can be used in an uncomplicated way on a mobile device. By instantly updating changes in tacoss.eTRADE, you achieve powerful warehouse management and internal transparency. Features and benefits of tacStock: - Powerful warehouse management integrated with tacoss.eTRADE - Selection of plants and associated warehouses - Goods receipt functions with order details, article control, and receipt slip creation - Outgoing goods functions with storage bin location and outgoing goods slip creation - Permanent and periodic inventories - Recording of stock transfer transaction - Simple scanning of barcodes - Picking and packing - Storage location search by scanning the article or a batch - Verification of storage bins according to weight/volume and allocation possibility - Transmission of information, such as images for clarification of questions - Printing of QR codes with the definition of preferred printers - Multi-client capability of the web application and thus possible group-wide use - Responsive design for optimal display on tablets and smartphones - No data storage on the web server, as all data comes from tacoss.eTRADE - High security through encrypted data exchange with tacoss.eTRADE (oAuth2) - Extensive user management

Screenshots

Stack614 screens
tacStock4 screens

Verdict

The call

The clearest difference is iOS requirement: Stack61 at 13.0 against tacStock's 15.0. 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Stack61 ships an update every 6 weeks, tacStock monthly. The most recent releases landed on June 4, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 8 level
Stack61 versus tacStock: the parameters behind the verdict, then further details
ParameterStack61tacStock
PriceFreeFree
Rating3.4 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size60 MB69 MB
Age rating4+4+
DeveloperPetro IT Ireland LimitedTacoss Software GmbH

In-app purchases

None

Stack61

No in-app purchases

None

tacStock

No in-app purchases

Questions

Is Stack61 free?
Stack61 is free to download, with no in-app purchases.
Is tacStock free?
tacStock is free to download, with no in-app purchases.
Do Stack61 or tacStock have ads?
Neither Stack61 nor tacStock shows ads.
Which is updated more often, Stack61 or tacStock?
Stack61 ships an update every 6 weeks, and tacStock monthly. Most recently, Stack61 was updated on June 4, 2026 and tacStock on September 18, 2026.

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