Jet.com\u00a0blasted off last week with much fanfare and bold ambitions to take on Amazon. Judging from my initial experience with the ecommerce contender\u2019s iOS app and website, Jeff Bezos shouldn\u2019t be too worried \u2014 at least for now.\n\n\nHere\u2019s the idea: $50 a year buys you a Jet.com membership \u2014 similar to Costco or Sam\u2019s Club but half of what Amazon Prime charges. Membership is required to make a Jet.com purchase.\n\n\nThe site is doing its best to undercut Amazon and big box retailers on price, especially on household products. Ecommerce research firm Profitero\u00a0found that Jet\u2019s prices were 9 percent lower on average than Amazon\u2019s and 6 percent less than Walmart.\n\n\nIn my spot check, Jet.com\u2019s did offer better prices than Amazon on a number of items, including dental floss, fabric softener and shampoo, as well as a few minor tech items, such as an Epson inkjet cartridge.\n\n\n\nHowever, when it comes to computers and electronics, Jet.com\u2019s inventory couldn\u2019t compare to Amazon\u2019s. There were zero MacBook Airs for sale on Jet.com, for instance. If you want a 64GB iPad Air 2, you\u2019re out of luck on Jet.com, although the site did have a 16GB model for sale \u2014 for $40 more than Amazon. I couldn\u2019t find Bose QuietComfort noise cancelling headphones, either. And although Jet.com offered some good laptop deals compared to Amazon, many were Windows 7 systems.\n\n\nI had difficulty registering my credit card with the iOS app (Jet.com has an Android app). I tried three different times using two different credit cards. Each time the response was the unhelpful \u201cOops\u2026Something went wrong.\u201d You can scan your cards into the app or manually enter the info, and I tried both\u2014but got the same result.\n\n\nUltimately, I went to the website and entered in my credit card. The website also provides more useful information than the app. Example: The website often supplies a "price-check" link to the same product on Amazon, so you can see that Jet.com is either matching Amazon\u2019s prices or undercutting them, a feature I didn\u2019t see in the app. (Update: While I didn\u2019t see this feature in the iOS app, it is available in the Android version.)\n\n\nIt\u2019s early days for Jet.com, of course. It\u2019s possible the site could eventually become a viable competitor to Amazon. For now, it\u2019s worth checking out, especially if you can get a good deal on membership (some sites offer 1-year for free for a limited time). But for a better experience, shop on Jet.com via a desktop browser rather than mobile app.