30 days free, then $15/mo flat
unlimited ASINs · all marketplaces · all 20+ alerts
Start free — claim $15/mo flat →Nova Data tracks your profit, PPC spend, and 200+ KPIs on an hourly refresh — and its new Listing Health Scanner flags a Buy Box takeover same-day, inside its own dashboard. SentryKit is the real-time alerting layer underneath: the moment Amazon's state changes, it's in your inbox, your Slack, or your API. Add SentryKit alongside Nova Data.
If what you actually want is a better P&L and PPC analytics platform than Nova Data, the honest answers are tools built for exactly that — Sellerboard and Fetcher are both mature, well-reviewed options in the same category, and neither is trying to be an alerting platform either.
But most sellers who land on a “Nova Data alternative” search aren't actually shopping for a different analytics dashboard — they're reacting to something Nova's hourly refresh or same-day scanner didn't catch in time. That's the layer SentryKit runs. Keep Nova Data for your P&L. Add SentryKit for the moment something changes on Amazon.
Nova Data doesn't fail because it's a bad analytics tool. It fails to warn you in time because that's not the job it was built for. SentryKit is the layer beneath.
Nova Data is a genuine, independently-verified analytics platform — founded in France in 2023, grant-funded, built for sellers, brand owners, and agencies who want profit and PPC visibility across 21+ marketplaces. That's a real and different job from what SentryKit does.
SentryKit doesn't compute your P&L, run A/B tests on your listings, or track your ACOS. What it does is watch your listings continuously and tell you, in real time, the moment something changes — a Buy Box loss, a hijacker, a suppressed listing, a stock-out, a new review. Nova's own Listing Health Scanner gestures at this need (same-day Buy Box takeover detection tied to P&L impact), which tells you the appetite is real. SentryKit is built to answer it fully.
Nova Data and SentryKit aren't competing for the same question. Here's what each one actually answers, sourced from Nova's public homepage, its blog post on hijacker detection, and its pricing page.
| Question | Nova Data answers | SentryKit answers |
|---|---|---|
| What was my profit, broken out by SKU? | Yes — automatic P&L across 200+ cost lines, hourly refresh. | No — that's Nova's job, not ours. |
| Did a new seller take the Buy Box on my ASIN? | Same-day via the Listing Health Scanner, tied to P&L impact. New feature, no dedicated pricing tier documented. | Real time, the moment it happens — with the seller's account age, feedback rating, and fulfillment channel. |
| Is the Buy Box currently lost, and why? | Buy Box % as a dashboard metric, refreshed hourly. | Dedicated real-time alert with floor-breach context and three ranked recovery options. |
| Did my main image or listing content change? | Not in scope. | Yes — dedicated Main Image and Product Details alerts. |
| Did inventory drop below a threshold? | BSR tracker & inventory management — dashboard view, not alert-based. | Yes — real-time FBA/FBM stock alerts. |
| Did a 1-star review land? | Not in scope. | Yes — dedicated Latest Reviews and Top-Rated Reviews alerts. |
| How is it delivered — Slack, email, API? | No notification channel documented — Listing Health Scanner surfaces inside Nova's own dashboard. | Email, Slack & REST API/webhooks included on every plan. |
| Pricing | Starter $29/mo (analytics suite, 14-day trial). Enterprise/Agency: custom. | Starter $19/mo · Pro $49/mo (real-time alerting, unlimited ASINs, API included). 30-day free trial. |
As of August 2026, based on Nova Data's public homepage (novadata.io), its published blog post on hijacker detection (novadata.io/resources/blog/amazon-hijacker-detection-and-removal), and its pricing page. Nova's Listing Health Scanner is tagged “New” with no dedicated feature page or pricing-tier detail published — treat exact tier inclusion as unconfirmed until verified directly with Nova.
Every SentryKit event ships with the context your team needs to act correctly, on every plan — not just the top one. Two examples.
6:05 AM. An unauthorized FBM seller lists on your best-selling ASIN and takes the Buy Box at $6 under your price.
With Nova Data. Nova's core analytics refresh hourly, and Buy Box % updates on that cadence — not the moment it happens. The Listing Health Scanner may flag the takeover same-day, tied to your P&L impact, but it surfaces inside Nova's own dashboard. No email, Slack, or API notification fires, so nothing reaches you unless you happen to log in.
With SentryKit. The alert fires at 6:05 AM, the same minute it happens, with the seller's account age, feedback rating, and fulfillment channel attached — delivered to your inbox and Slack, on Starter, without opening a dashboard.
Nova will eventually show you the profit impact. SentryKit tells you while there's still time to act on it.
Nova Data has no documented email, Slack, or API/webhook alerting for any of its features, including the new Listing Health Scanner, which surfaces same-day inside its own dashboard. SentryKit delivers by email, Slack, and REST API on every plan, the moment an event happens.
Nova's hijacker-adjacent feature is scoped to Buy Box takeovers tied to P&L impact. It doesn't cover search suppression, listing content changes, inventory thresholds, or reviews — SentryKit runs all of those as dedicated, independent alert types.
SentryKit's Hijacker Detected alert ships with the unauthorized seller's account age, feedback rating, and fulfillment channel attached — the detail you need to decide whether to act, document, or escalate. Nova's Listing Health Scanner isn't documented as including seller-level detail.
Nova Data charges $29/month for its analytics suite (14-day trial). SentryKit is priced separately, by storefront, with unlimited ASINs, orders, and marketplaces on every plan — and a 30-day free trial.
Both plans include the full 30-day free trial, no credit card. Running SentryKit alongside Nova Data doesn't require dropping either — they answer different questions, at different price points, on different cadences.
Nova Data isn't the only adjacent tool sellers weigh against SentryKit. These three come up often in the same evaluation.
Real Time Alerts · No Commitments · Advanced Insights
No. Nova Data is a P&L and PPC analytics platform — it tracks profit, ad spend, and 200+ KPIs across your Amazon business. SentryKit is a real-time alerting platform for Buy Box, listing, inventory, and review events. Most sellers who use Nova Data for analytics run SentryKit alongside it for the moment-to-moment alerts Nova's dashboard doesn't send.
SentryKit sends real-time email, Slack, and API/webhook alerts the moment an event happens — Buy Box loss, a hijacker taking your listing, suppression, inventory drops, or a new review. Nova Data has no dedicated alert-delivery channel at all; its closest feature, the Listing Health Scanner, surfaces same-day inside its own dashboard rather than pushing a notification to you.
Yes, and most sellers evaluating both do exactly that. Nova Data answers “what did my P&L look like” and “what's my Buy Box percentage this week” — SentryKit answers “is something happening to my listing right now.” They sit at different layers: Nova is the analytics layer, SentryKit is the real-time alerting layer underneath it.
SentryKit alerts fire in real time, the moment Amazon's state changes — a Buy Box loss, a new seller on your listing, or a review posting. Nova Data's data refreshes hourly for its core analytics, and its Listing Health Scanner is described as a same-day, not real-time, detection feature.
Nova Data's Starter plan is $29/month for P&L and PPC analytics with a 14-day trial. SentryKit is a separate product at a separate price point — $19/month for Starter (real-time alerts, unlimited ASINs, REST API & webhooks included) or $49/month for Pro — with a 30-day free trial. The two aren't a straight swap since they do different jobs.
Not fully. Nova's Listing Health Scanner flags same-day when a new seller joins or takes the Buy Box, tied to P&L impact — a real and useful signal, but it's a new feature with no dedicated pricing tier or notification channel documented. SentryKit's Hijacker Detected alert fires in real time with the unauthorized seller's account age, feedback rating, and fulfillment channel, delivered by email, Slack, or API.
Start a 30-day free trial at live.sentrykit.com/signup — no credit card required. SentryKit connects to your Seller Central account independently of Nova Data, so you can run both at once: Nova for profit and PPC analytics, SentryKit for real-time Buy Box, hijacker, listing, inventory, and review alerts.
