Comparison

inFlow Inventory vs SOS Inventory Software

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

Head to head
About

inFlow Inventory

Manage inventory, orders, and sales on the go. Use your phone as a barcode scanner, create invoices, and track stock levels from anywhere. Streamline team tasks and access product details easily.

Highlights
  • Create and manage orders
  • Use phone as barcode scanner
  • Assign orders to team members
  • Generate product catalog with images
  • Create and email invoices
  • Transfer and adjust stock
  • Manage product, vendor, and customer details
Features
Read full description

inFlow Inventory is used in over 90 countries to manage inventory, sales, purchasing, and manufacturing. Our mobile app helps you stay productive from anywhere. Create and manage orders without a computer. As long as you have your iPhone you can check stock and finalize sales right on the spot, or generate new purchase orders when stock is running low. Use your iPhone as a barcode scanner. Use the built-in camera to receive new stock as it arrives. Scan items mark them as shipped. No extra equipment required. Get manufacturing work done on the shop floor. Pick raw materials for finished products or kits. Track work on timesheets for each operational step. Take the hassle out of invoicing. Generate invoices from any order and email them straight from the app. Your customers can even pay your invoices online (US & Canada only). Transfer and adjust stock at any time. Need to adjust inventory due to damaged goods? Sending something back to your main warehouse? inFlow makes these tasks easy and fast. Manage product, vendor and customer details. No need to call the back office to check on stock. inFlow gives you full access to item details and current quantities. You’ll also have vendor and customer information you need to get the job done. If you have any questions, issues or requests, please contact us at support@inflowinventory.com. We’re ready and happy to help!

About

SOS Inventory Software

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
Read full description

Get a panoramic view of your inventory, cash flow, and operations with a single inventory management control program designed specifically for QBO integration. SOS Inventory was created with the small business owner in mind; similar programs start at tens of thousands of dollars. SOS is suitable for the cost-conscious with no sacrifice of powerful features and functions. SOS Inventory’s easy-to-use inventory management software offers complete control over purchase orders, stock, sales, customers and locations with endless reporting options. Our mobile application allows users the freedom to work away from the desk, and unique features that are especially convenient for conducting physical inventory counts. **Unique Mobile App Features:** • Rapid Stock Review – Quickly check stock-on-hand by location and date. • Pricing Checks – Scan items and apply a wide range of filters to vendor specific discounts, quantity discounts, general pricing, etc. • Bin Tracking – Find the count of any bin. • Physical Inventory Counts – Scan bar codes to check actual versus logged inventory numbers by location. • Add a Sale – Add an estimate, order, receipt or invoice. • Built-in Bar Code Scanning – Scan items from your phone directly to the mobile app for quick inventory review and comparison. **Inventory:** • Locations • Kits (Item Groups) • Cycle Counting • Inventory Adjustments • Pictures of Items • Serial Numbers (Serialized Inventory) • Lot Numbers (Batches) • Bin Tracking • Barcoding in Multiple Formats • Units of Measure on all Transactions • Inventory Transfers with Shipping • Item Variants • Calculate Reorder Points Based on Historical Data • Landed Costs **Manufacturing:** • Assemblies • BOM Levels • Auto-Build on Shipment • Contract Manufacturing • Job Tracking • Job Cost Accounting • Work Orders • Work Centers • Work-in-Progress (WIP) • Process Manufacturing • Variable-Yield Manufacturing • Labor Tracking • Overhead **Fulfillment:** • Backorder Management • Packing Slips • Bills of Lading • Shipments • Partial Shipments • Ship Multiple Sales Orders for Same Customer • Drop Shipments • UPS Shipping Integration • Pick Tickets **Sales:** • Sales Orders • Estimates/Quotes • Invoices • Merge Multiple Invoices for Same Customer • Sales Receipts • Sales Reps Restricted to Customers/Sales • Commission Reports • Note System for Customer Service Reps • Returns • Credit Memos • Credit Holds on Customers • Sub-Customers with Parent Billing • Number of External Connections • ShipStation Integration • Rentals and Consignments • Contract Pricing • Price Levels • “Cost Plus” Pricing Number one rated ERP software. Companion application for current SOS Inventory web application subscribers.

Screenshots

inFlow Inventory4 screens
SOS Inventory Software3 screens

Verdict

The call

inFlow Inventory and SOS Inventory Software both sit at 4.1 stars, but that hides the real split: 50% of inFlow Inventory's written reviews are positive against 22% of SOS Inventory Software's. inFlow Inventory also leads on update cadence (weekly vs monthly). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for inFlow Inventory against 4.2 for SOS Inventory Software. Both are backed by a comparable volume of ratings — 129 and 82 respectively. Written reviews are what separate them: 50% of inFlow Inventory's written reviews are positive against 22% of SOS Inventory Software's.

UpkeepUpdate frequency

inFlow Inventory ships an update weekly, SOS Inventory Software monthly. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
inFlow Inventory versus SOS Inventory Software: the parameters behind the verdict, then further details
ParameterinFlow InventorySOS Inventory Software
PriceFreeFree
Rating4.1 (129 ratings)4.2 (82 ratings) — better
Positive reviews50.0% of reviews — better22.2% of reviews
Number of ratings129 — better82
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 — better15.6
Further details — not scored
Size73 MB17 MB
Age rating4+4+
DeveloperArchon Systems Inc.Saddle Oak Software

Customer experience

inFlow Inventory

All ratings129 ratings
Positive77.5%
Neutral3.9%
Negative18.6%
Written reviews20 reviews
Positive50.0%
Neutral10.0%
Negative40.0%

SOS Inventory Software

All ratings82 ratings
Positive79.3%
Neutral3.7%
Negative17.1%
Written reviews9 reviews
Positive22.2%
Neutral11.1%
Negative66.7%

In-app purchases

None

inFlow Inventory

No in-app purchases

None

SOS Inventory Software

No in-app purchases

Questions

Is inFlow Inventory free?
inFlow Inventory is free to download, with no in-app purchases.
Is SOS Inventory Software free?
SOS Inventory Software is free to download, with no in-app purchases.
Which has better reviews, inFlow Inventory or SOS Inventory Software?
SOS Inventory Software is rated higher. inFlow Inventory averages 4.1 out of 5 from 129 ratings, while SOS Inventory Software averages 4.2 from 82 ratings.
Do inFlow Inventory or SOS Inventory Software have ads?
Neither inFlow Inventory nor SOS Inventory Software shows ads.
Which is updated more often, inFlow Inventory or SOS Inventory Software?
inFlow Inventory ships an update weekly, and SOS Inventory Software monthly. Most recently, inFlow Inventory was updated on October 8, 2026 and SOS Inventory Software on October 3, 2026.

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