Shelf OS vs Shelflife: low stock forecasts
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for Shelf OS, Oct 13, 2026 for Shelflife.
The short answer
- Both list a free plan. Paid plans start at $19/month for Shelf OS and $35/month for Shelflife.
- Shelf OS lists 5 features Shelflife’s listing doesn’t mention, including Analytics, Auto-processing, Insights.
Head to head
Free
- · 1 Store
- · 1 location
- · 90 days sales history
- · Top 100 variants by revenue
Starter Monthly
- · 1 location
- · 2,000 variants
- · 90 days of history
- · CSV and PDF exports
- · Every number shows its math
- · Weekly buy-list email
Growth Monthly
- · 10,000 variants
- · 3 locations
- · 365 days of history (seasonality)
- · Budget Mode
- · Everything in Starter
- · Stockout risk alerts
Pro Monthly
- · Everything in Growth
- · Open to Buy
- · Slack digest
- · Unlimited variants and locations
- · Up to 3 stores
Starter Annual
- · Same Features as Starter Monthly
Growth Annual
- · Same Features as Growth Monthly
Pro Annual
- · Same Features as Pro Monthly
Free
- · 1 alert email address
- · Automatic inventory sync
- · Critical stockout alerts
- · Customer support
- · Low stock dashboard
- · Purchase order management
Growth
- · Custom safety stock levels
- · Custom stockout thresholds
- · Manual inventory sync
- · Priority customer support
- · Purchase order delivery reminders
- · Unlimited suppliers
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSome products are about to sell out, others are dead money, and telling which — and how much to buy — means a spreadsheet every week. Shelf OS reads your sales and stock and returns one buy list, sorted by what runs out first, with quantities that respect case packs and supplier minimums. Click any number to see the arithmetic in plain English. Set a budget and it allocates across your most urgent lines.
Your top-sellers are your biggest risk. They sell out fastest, ads run, customers click, revenue is gone. Shelflife forecasts when stock will run out, across every location, so you reorder in time. Top features are: sales-based forecasts showing days of stock remaining for every variant, email alerts when a variant enters at-risk territory, POs tracking in one place, an at-risk dash so you know what to act on first,…
- Buy list with a verdict: what runs out first, how much to order, from whom.
- Budget Mode allocates your spend across the most urgent reorders
- Printable supplier purchase orders and barcode label PDFs
- Every number shows its math — click any qty to see why
- Proven sales forecasting that shows exactly when each variant will sell out.
- Reliable email alerts before stockouts hit. Configurable and efficient.
- Every at-risk product in one effortless dashboard, sorted by urgency.
- Painless purchase order tracking — know what's ordered and when it arrives
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Shelf OS |  Shelflife |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Shelf OS | Shelflife |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Shelf OS and Shelflife: common questions
- Is Shelf OS or Shelflife cheaper?
- Both list a free plan. Paid plans start at $19/month for Shelf OS and $35/month for Shelflife. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Shelf OS lists 5 the others don’t mention, such as Analytics, Auto-processing, Insights, Inventory tracking. Shelflife lists 5 the others don’t mention, such as Expiry dates, Inventory sync, Multi-location, Purchase orders. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 14, 2026 for Shelf OS, Oct 13, 2026 for Shelflife; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 14, 2026 for Shelf OS, Oct 13, 2026 for Shelflife. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.