SASI is winding down with Mantle. Where the App Store Index goes now.

If you tracked your Shopify app with SASI, the Shopify App Store Index, you got a daily read on where you ranked, which keywords were moving, and which apps were climbing the category. It was largely free, it was good, and on June 16, 2026 Mantle announced it is winding down. SASI goes with it. This post covers what that means for the people who relied on it, where the rest of Mantle’s work has a sensible home, and how Asomify carries the part it has always focused on: the App Store Index.

In short

• SASI is the part of Mantle that tracked App Store rankings, category position, and keyword performance from public data, plus listing and review history. That is the slice Asomify covers.
• Mantle did far more than SASI did. Billing, revenue analytics, email, help desk, and affiliate programs are not things Asomify replaces, and we point you to sensible homes for them below.
• There is no SASI data to export. Asomify rebuilds your App Store rank history from public data, so you add your app and keywords and get recent history with no migration step.

What is shutting down, and by when

The wind-down covers all of Mantle. The dashboard, the public APIs, and the MCP integrations stop, and the data is eventually destroyed. SASI shuts down as part of that.

There are two dates, and which one applies depends on how you used Mantle. Accounts not using Mantle Billing are served until August 14, 2026, which is 60 days after the announcement. Accounts using Mantle Billing keep analytics, helpdesk, and email through September 30, 2026. After your date, the dashboards and data go away, so it is worth knowing which deadline is yours before you plan a move.

What SASI users actually lose

SASI was the Shopify App Store Index. Mantle acquired it in 2026 and folded it into its reporting, but the standalone tool kept doing what developers valued: it tracked the public App Store every day and showed position changes.

When SASI goes away you lose a daily view of your app’s ranking and position changes, your category rank, and your keyword and search-results performance. You lose the ability to follow apps and keywords and get notified when they move. The feeds go too: top movers over 30 days, most reviewed, and new apps. The historical listing data, review counts, and ratings go with them.

Many people used SASI to check each morning whether they moved and why. Once it shuts down, that question has no answer. That is the gap worth filling.

Mantle did a lot more than SASI, and we don’t replace most of it

We want to be straight about this before going further. SASI was one feature inside a broad product. Mantle also handled billing and subscriptions, revenue and customer analytics, email marketing and flows, a help desk and knowledge base, a CRM, and affiliate and referral programs, with AI agents and a CLI on top.

Asomify does none of that, and we are not going to pretend otherwise. If you are reading migration guides this week, you have probably seen several tools claim to be the Mantle replacement for their own corner. Asomify carries the App Store Index. For everything else, here is where it reasonably goes.

What you used Mantle for, and where it goes now

Read the last column first: most rows are not Asomify, and we say so plainly. This table maps each piece of Mantle to a sensible next home and states whether Asomify covers it.

What Asomify carries forward, and adds

Start with what SASI did. Asomify does daily keyword and rank tracking, including category rank and search-results rank, from public App Store data with no Shopify Partners login. That covers what SASI did, refreshed daily.

On top of that, there are a few things that go a step further than a rank number on its own.

• KES, the Keyword Efficiency Score: one number from 0 to 100 per keyword, built from estimated volume, your current rank, and the trend. It adds a priority score on top of the rank, so you know which keyword to work next.
• Keyword gaps: terms where real install volume meets a leader you can realistically beat, so you spend effort where it can actually pay off.
• The anomaly log: it flags the days when the whole App Store board shifts, so you can tell a market-wide drop from a problem with your own listing.
• AI Visibility, on the Pro plan: whether ChatGPT names your app when a merchant asks for the best app for a job. SASI never measured this.

Rank is a starting signal

A rank on its own does not tell you much. A position with no volume or trend behind it does not tell you what to do next, which is why KES exists and why we keep saying that rank tracking is not the same as the work of ranking.

What you want is a few signals together: where you sit, whether the keyword is worth the seat, and whether a move was yours or the market’s. That is what the anomaly log and the keyword gap view are for, and why the public market overview sits alongside the in-app panels.

What Asomify does not do

To be clear about the limits, here is what Asomify will not do for you, with where the work belongs instead.

• No billing or subscriptions. Mantle’s own guidance points to Shopify’s native App Pricing.
• No revenue or customer analytics, no LTV, no funnel reporting.
• No email marketing and no flow automations.
• No help desk and no CRM.
• No affiliate or referral program. An affiliate platform such as Shoffi is one option there.

Moving over takes one step

This is the easy part. There is no account to migrate and no CSV to wrangle, because SASI has no data for you to take with you. You add your app and the keywords you care about, and the recent history is already there.

The 3-day trial needs no credit card. App Store Insights are on every plan, Starter is $19 a month for 3 apps and unlimited keywords, and Pro is $49 a month for unlimited apps plus AI Visibility. If you want to see the shape of the data before signing up, the market overview and the methodology page are both public.

Common questions

Is SASI, the Shopify App Store Index, really shutting down?

Yes. Mantle announced on June 16, 2026 that it is winding down, and SASI shuts down as part of that. Accounts not using Mantle Billing are served until August 14, 2026, and accounts using Mantle Billing are supported through September 30, 2026. After that the dashboards and data go away, so set up a replacement for the App Store tracking before the date that applies to you.

What is the best SASI alternative for App Store rank tracking?

For the App Store Index slice specifically, Asomify is built for exactly that: daily keyword and rank tracking, category and search-results rank, review and listing history, and a market overview, all from public App Store data with no Shopify Partners login. It does not replace Mantle’s billing, analytics, email, support, or affiliate features, so if you used those, pair Asomify with dedicated tools for each.

Do I need to export my SASI data to switch?

No. There is nothing to export. Asomify rebuilds App Store rank history from public data, so you add your app and your keywords and get recent history. There is no CSV, no migration step, and the trial does not ask for a credit card.

What should I use instead of Mantle for billing?

Mantle’s own guidance points to Shopify’s native App Pricing for billing and subscriptions, and that is the sensible home for it. Asomify does not handle billing. We focus on the App Store Index part, which is the piece SASI covered.

Does Asomify do anything SASI didn’t?

A few things. KES gives each keyword a single 0 to 100 priority score from estimated volume, rank, and trend. The keyword gap view finds terms where real install volume meets a beatable leader. The anomaly log separates a market-wide shift from a problem with your own listing. And on Pro, AI Visibility checks whether ChatGPT names your app, which SASI never measured.

“SASI answered one question every morning: did I move, and why. That question still has an answer.”

Add your app, add your keywords, and the App Store history you were watching is back, with recent history already in it.

Track your Shopify app with Asomify. Start a free trial.