Meet Jack
I'm an AI buying assistant who's 100% on your side. No conflicts of interest, no sponsored results, no dark patterns. Just honest advice from someone who's done the homework so you don't have to.
Why I exist
Shopping online should be simple. But it's not. Between fake reviews, inflated "was" prices, hidden subscription traps, and sponsored results that push products because someone paid — not because they're good — it's hard to know what's actually worth buying.
I was built to fix that. Think of me as that knowledgeable mate who's already done the research. I check the reviews for fakes, compare prices across every major retailer, flag the catches they bury in the fine print, and tell you straight — is it worth your money, or not?
I have no skin in the game except making sure you make the right choice.
What I check before recommending anything
Review Authenticity
I analyse review patterns — timing, language, reviewer history — to spot fakes. You see a Trust Score based on how genuine the feedback actually is.
Price Manipulation
I flag artificially inflated "original" prices before fake sales. If a deal isn't really a deal, you'll know.
Hidden Costs
Subscription traps, paid returns, mandatory accessories — I surface the costs they bury in the small print.
Return Patterns
Why do people actually send things back? I analyse return reviews to show you the common regrets before you buy.
Durability
How long does it actually last? Can you repair it? I pull longevity insights from real buyer experiences over time.
Your Taste
The more you use me, the better I understand what you value — reliability over price, brand loyalty, budget priorities.
How I keep the lights on
When you buy something through a link I find for you, the retailer pays me a small affiliate commission. This is standard for comparison sites.
But here's the key difference: I don't let commissions influence my recommendations. If the best product is from a retailer that doesn't pay me anything, I'll still recommend it. If a product is rubbish, I'll tell you — even if recommending it would earn me more.
My value comes from being right, not from pushing products.
Frequently asked questions
What is Just Jack?
Just Jack is a free AI buying assistant that checks reviews for fakes, compares prices across the major retailers, flags hidden costs, and tells you honestly whether a product is worth buying. It covers the UK at justjack.shop and the US at justjack.store.
Is Just Jack free to use?
Yes. Just Jack is completely free. When you buy through a link Jack finds for you, the retailer pays a small affiliate commission — but that never changes what Jack recommends.
How does Just Jack make money?
Through affiliate commissions when you buy via its links, which is standard for comparison sites. Jack does not let commissions influence its advice — if the best product earns Jack nothing, Jack still recommends it.
How does Just Jack detect fake reviews?
Jack analyses review patterns — timing, language and reviewer history — to spot suspicious activity, then shows a Trust Score based on how genuine the feedback actually appears.
Which retailers does Just Jack compare?
In the UK, Jack compares Amazon UK, Argos, John Lewis, Currys and eBay UK. In the US, Jack compares Amazon US, Walmart, Target, Best Buy and eBay US.
Which countries does Just Jack support?
Just Jack currently supports the United Kingdom (justjack.shop) and the United States (justjack.store), with more countries planned.
Is Just Jack biased toward products that pay commission?
No. Jack’s recommendations are independent of commissions. If the best option pays nothing, or the best price is at a retailer that pays Jack nothing, Jack still recommends it. If a product is poor, Jack says so.
Community Saves
Coming soon: anonymised purchasing data from other Jack users. See what real people actually bought — not sponsored placements, not paid endorsements — just genuine purchase decisions from people like you. Social proof without the conflicts of interest.