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A Lifetimely alternative for merchants who buy from suppliers
Lifetimely by AMP is customer analytics at heart: daily P&L, lifetime value, acquisition cost, cohorts, attribution. It is built for brands that grow by advertising. CostSentry is built for stores whose margin is decided in a supplier's spreadsheet: it reads the price list, finds the increases and tells you which retail prices no longer work.
Side by side
If your biggest margin risk is ad spend, Lifetimely is the right lens. If it is your suppliers, CostSentry is.
| CostSentry | Lifetimely | |
|---|---|---|
| Starting price | Free for 1 supplier and 1,000 products (weekly) · Starter $19/mo (2 suppliers, 10,000 products, daily + instant alerts, cost write-back) · Pro $49 · Enterprise $99 | Free up to 50 orders/mo · M $149/mo (501–3,000 orders) · XL $499 · Unlimited $999; 14-day trial |
| What it watches | Your suppliers' price lists — CSV or XLSX, forwarded by email or uploaded | Orders, customers, ad platforms, subscriptions (Klaviyo, Recharge, TikTok) |
| Tells you when a supplier raises a price | Yes — every SKU whose cost went up, with the old and new cost, before you sell at the old margin | No |
| Margin impact per SKU and a suggested new price | Yes — margin at your current Shopify retail, flag below your margin floor, and the price that holds the margin | Product margin inside the P&L; no suggested price |
| Writes the new cost to Shopify | One click, or automatically on Starter and up | No |
| Net profit dashboard with ad spend and fees | No — CostSentry watches cost, not the P&L | Yes — daily P&L, LTV, CAC and payback, attribution, custom dashboards |
| Alerts | Email and Telegram: instant, daily or weekly digest | Email reports, Slack, an AI “Profit Agent” that surfaces insights |
| Billing | Through your Shopify invoice; free plan, no card | Shopify app subscription by order volume |
| Built for | Stores that buy wholesale and receive price lists from suppliers | DTC brands that live on paid acquisition and repeat purchase |
Which one do you actually need?
Choose Lifetimely if…
- You need LTV, CAC, payback and cohort analysis
- You want attribution across ad platforms next to profit
- Order volume, not supplier pricing, is what moves your numbers
Choose CostSentry if…
- Your costs come from supplier price lists that change without warning
- You want to catch every SKU that dropped below the floor, in the file, on the day
- You want alerts on Telegram and the cost fixed in Shopify
See your real margins first — free
The free Supplier Price Margin Checker takes your Shopify product export and a supplier price list and shows the margin per SKU at your current retail — plus the price you would need to hold your target. Then install CostSentry and let it read every new price list for you.
Open the free checker ↗Runs in your browser. No signup, nothing uploaded. CostSentry itself: free plan on the Shopify App Store.