Plug in Useful, a Shopify App Portfolio with 37,000 Users, Goes to SureSwift: an App Business Built by "the SEO Guy"

What happened

Plug in Useful is a portfolio of Shopify apps that Daniel Sim ran solo. Centered on apps that improve a store’s search traffic — SEO audits, image optimization, and more — it reached a combined 37,000 users and was sold to SureSwift Capital, a firm that specializes in acquiring SaaS businesses.

The “your expertise x the store’s context” playbook

Sim’s background is as an SEO expert. He took work he knew inside out — improving SEO for e-commerce stores — and put it into the distribution format of Shopify apps. It’s the same “productizing the expert” move as TopicRanker’s SEO consulting and Podcast Clout’s PR agency roots, combined here with the customer-acquisition power of an app store.

Domain expertise pays off not only in feature design but in “how you get found inside the store.” Naturally, an SEO expert is strong at app store search (ASO) too — the design accounts for the fit between expertise and distribution channel as well.

SureSwift, the buyer: a “permanent exit”

SureSwift Capital specializes in acquiring and operating small-to-mid-size SaaS for the long term, and alongside saas.group is a regular buyer in this size bracket. Their existence enables a division of labor for solo developers: build, grow, then hand off to a dedicated operator.

37,000 users — a figure that includes free plans — is mid-tier for Shopify apps, but with multiple apps, proven expertise, and stable ratings combined, it clears a regular acquirer’s bar. Lining up Jexo, Order Tagger, and this case, a pattern becomes visible: multi-app owners within an ecosystem reach a tier of exit above single-app developers.

Related reading

• Usersnap — saas.group, the same kind of permanent buyer
• Jexo — a comparable “multi-app owner” exit