Eight Apps Through Shopify Review. Built by a Merchant's Studio, Not a Growth Team.
JMS Dev Lab is a verified Shopify Partner in Cork, Ireland. Eight of our apps are live on the App Store — scheduling, spam protection, profit protection, repairs, valuations, marketing, commissions and tax reconciliation — and five have genuine free plans. When you need something the App Store doesn't have, we build it fixed-price.
8 approved App Store apps · Free plans on 5 · Custom Shopify work from €3,000 fixed
Eight Apps, Every One Through Independent Review
Shopify reviews every listed app for performance, security, and compliance. All eight passed. Install from the listing — that's where free plans start and pricing is enforced.
StaffHub
Staff scheduling, POS time clock, timesheets, payroll-ready export. Free plan (up to 5 staff), paid from $12.99/mo.
SpamShield
Blocks contact-form, review, and comment spam without CAPTCHAs — four detection layers in under 200ms. Free plan, paid from $4.99/mo.
ProfitShield
Order-level profit protection via Shopify Functions — stop discount stacking and loss-making orders before they happen. Free plan, paid from $19/mo.
GrowthMap
Guided daily marketing tasks — like Duolingo for store marketing. Free plan, paid from $9.99/mo.
RepairDesk
Repair ticket pipeline with photos, quotes, and customer notifications — for any store that offers repair services. 14-day free trial, from $9.99/mo.
Jewel Value & JewelryStudioManager
Valuation certificates and a custom-commission CRM — the jewelry pair. Jewel Value has a 14-day trial; JewelryStudioManager has a free plan up to 3 active commissions. Paid plans start at $9.99/mo. See the full jewelry suite.
TaxMatch
Reconciles 1099-K gross payments against Shopify orders, refunds, fees, tax and chargebacks. 30-day free trial, from $9.99/mo.
When Your Store Needs Something That Doesn't Exist
Free Shopify stack audit
Too many apps? Store feels slow? App bills creeping up? Describe your store and get an honest written read: what to remove, replace, or keep — and whether custom work is even justified. Request the free audit.
Custom Shopify development
Private apps, integrations, automations, theme work — fixed-price from €3,000. Eight current Shopify App Store listings are checkable evidence of our delivery experience, not a portfolio slide. How a build works.
Guides for merchants
Practical, sales-free reading: the Shopify guides hub, custom build vs App Store app, and what Shopify developers charge in Ireland.