SOS Inventory vs inFlow Inventory

Two inventory tools side by side. Prices are the starting plan a small business would pick, in USD.

Compare	SOS InventorySOS Inventory	inFlow InventoryArchon Systems
In one line	Inventory and light manufacturing on top of QuickBooks Online	Inventory with barcodes and purchase orders, from $99 a month
Starting price	From $58.29/mo + $20.83/extra person	From $99/mo + $29/extra person
Six-person team	$142/mo	$215/mo
Plans	Billed yearly: Companion $699.50/yr ($58.29/mo, 2 users); Plus $1,399.50/yr ($116.63/mo; 3 users, unlimited locations, serial/lot tracking); Pro $1,949.50/yr ($162.46/mo; 5 users, job costing); monthly $69.95/$139.95/$194.95; extra users $25/mo ($250/yr); store and FTP connections $25/mo each, 1/2/3 allowed by plan; 14-day trial; works with QuickBooks Online	Billed yearly: Lite $99/mo (2 members, 1 location); Core $299 (5, 5); Pro $499 (10, unlimited); Max $699 (20); monthly $129/$379/$629/$879; extra members $29/mo; $499 onboarding required above Lite; 14-day trial
Pricing model	Free trial	Free trial
Free trial	14 days	14 days
Users	2 on Companion	2 on Lite
Integrations	QuickBooks Online, Shopify, BigCommerce, PayPal	Shopify, WooCommerce, Amazon, QuickBooks, Xero
Team size	2–10 people · 11–50 people	2–10 people · 11–50 people
Available in	US · CA	US · UK · CA · AU
Phone support	Plus and up	None listed
Live chat	None listed	Plans not stated
Support hours	Email: Mon–Fri 8:00 AM–6:00 PM Central; Sat–Sun 12:00 PM–4:00 PM Central · Phone: Mon–Fri 9:00 AM–6:00 PM Central	Not published
Incidents posted	1 incident posted on SOS Inventory's status page, which covers all SOS Inventory products and regions, in the 90 days to Oct 27, 2026; 1 marked major or critical by SOS Inventory. Status page	Archon Systems has a public status page. Status page
Capterra score	4.2 / 5 from 17 reviews (few reviews)	4.6 / 5 from 504 reviews
Trustpilot score	Not listed	4.0 / 5 from 13 reviews (few reviews)
Fit: Retail shop	60	72
Fit: Restaurant or café	15	25
Fit: Service business	25	25
Fit: Agency or studio	10	10
Fit: Trades or contractor	55	50
Fit: Online store	70	75
Why people pick it	Deep QuickBooks Online sync Serial, lot, and assembly tracking	Barcode scanning on phones Clear user and location limits
Where it falls short	Built around QuickBooks Online Store connections cost extra	Onboarding fee above Lite Gets expensive past five users
	Visit SOS Inventory ↗	Visit inFlow Inventory ↗

Six-person prices are what a team of six would pay on the published plans; "Not listed" means those plans don't cover six. How we calculate prices