Alertr: Inventory Management vs Forecaster
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Alertr, Nov 6, 2026 for Forecaster.
The short answer
- Paid plans start at $29/month for Alertr and $14.99/month for Forecaster.
- Alertr lists 6 features Forecaster’s listing doesn’t mention, including Auto-restock, Data export, Forecasting.
Head to head
Pro
- · CSV export
- · Daily email alerts
- · Daily slack alerts
- · Unlimited SKU tracking
Pro
- · Unlimited Email Reorder Notifications
- · Unlimited Forecasts
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAlertr calculates how quickly every SKU is selling using your real Shopify order data, then estimates when each item will run out. Set your lead time, safety stock runway, and per-SKU multipliers to see exactly what to reorder and how much. Get daily email or Slack alerts when stock drops below your thresholds. Filter by out-of-stock, low stock, or needs-reorder, and export to CSV.
Forecaster helps you know exactly when and how much to reorder. Using historical and seasonal sales data, it recommends reorder quantities by SKU, so you can restock the correct products, sizes, and colors without guessing. It also sends daily email alerts when products are trending toward out-of-stock and shows you the estimated revenue lost per day if they sell out.
- Daily inventory sync with daily sell rates calculated from your Shopify orders
- Email and Slack alerts when stock drops below your thresholds
- Set days until delivery, stock buffer, and reorder amounts per product
- Dashboard with search, filters, and CSV export
- We show you exactly how much to reorder.
- We tell you when an item is trending to go out of stock.
- We inform you how much revenue a day is lost if products do go out of stock.
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 |  Alertr |  Forecaster |
|---|---|---|
| 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 | Alertr | Forecaster |
|---|---|---|
| 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 |
Pricing
| Measure | Alertr | Forecaster |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $29/month | $14.99/month(ahead) |
| Longest free trial | 14 days | 30 days |
| Plans listed | 1 | 1 |
Listing
| Measure | Alertr | Forecaster |
|---|---|---|
| Shopify category rank | #581 | #441(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 12, 2026 | Jun 2, 2026 |
| Languages | 1 | 1 |
| Developer | Lexar | Forecaster |
FAQ
Alertr and Forecaster: common questions
- Is Alertr or Forecaster cheaper?
- Paid plans start at $29/month for Alertr and $14.99/month for Forecaster. 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?
- Alertr lists 6 the others don’t mention, such as Auto-restock, Data export, Forecasting, Inventory tracking. Forecaster lists 3 the others don’t mention, such as Back-in-stock alerts, Multi-channel, Real-time updates. 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 13, 2026 for Alertr, Nov 6, 2026 for Forecaster; 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 13, 2026 for Alertr, Nov 6, 2026 for Forecaster. 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.