GUIDES

Guides, comparisons, tools.

Written to be useful whether or not you install anything of ours. Comparisons say plainly when a competitor is the better fit; the tools run in your browser, no signup.

Start here

How to choose a bundle app

The two architectures, what each one breaks, and the vendor-neutral five-minute test that beats any sales page.

For ERP and 3PL operations

The data-contract case: order shape, write surface, verification cadence, and a one-hour evaluation script.

For beauty brands

Sets where shoppers still pick their shade, build-a-box routines, and shade-exact pick lists.

Honest comparisons

Simple Bundles

The most mature kit app vs the read-only architecture: sync, or nothing to sync.

Kaching Bundles

The category's conversion leader optimizes before checkout; we optimize what your warehouse receives after it.

Bundler

Genuinely free for unlimited discounts. When free is right, and when it gets expensive downstream.

WideBundle

Polished offer widget, metered pricing with low published caps, and the order question its listing does not answer.

Amplify (ex-PickyStory)

The breadth suite from $99.50/month by store revenue vs a flat depth play on the kit job.

Rebuy, for bundles

Usually not a replacement: keep the personalization suite, fix the kit slice beside it.

Migrating off a dead or retired app

Moving off Rebolt

Delisted with no explanation. What it left on your store and the four checks for its replacement.

Moving off Fast Bundle

Relisted after the July 2026 security removal. A reinstall restores nothing; decide with open eyes.

Moving off Stocky

Retired August 31, 2026. The kit-assembly slice, and where checkout-time expansion beats manual assembly.

Features in depth

Works with Shopify Sidekick

Ask the admin assistant about your bundles, and have it draft new ones for your confirmation. First bundle app on the rail Sidekick can create with.

Free tools

Margin calculator

Bundle price, profit, margin, and the break-even volume lift a discount has to earn. Runs in your browser.

Multi-currency checklist

The six places bundle prices break abroad, as a checklist you can run on any app today.

Price-at-volume table

What eight bundle apps actually bill at $1k, $5k, $10k and $25k a month, from their published tiers.