Despite my generally positive feelings about Cloak, there are a few improvements that I'd like to see. For one thing, I'd love an option to have my iPhone prefer joining a trusted network over an untrusted network if both are available. For another, it'd be handy if a few more of the options were available within the app itself, such as using Transporter or disconnecting from the VPN while on a trusted network. But some of those may be limitations of iOS itself, which may themselves be lifted in time.
Cloak itself is a free download, and it works on your iPhone, iPad, or iPod touch running iOS 7.0 or later. You will, however, need to pony up a bit for the service (servers aren't cheap, after all!), which offers two subscriptions: an unlimited data plan for $10 per month or a mini plan (limited to 5GB of bandwidth) for $3 per month. All plans work on multiple devices simultaneously, so even if you're using it on an iPhone, iPad, and Mac, they can all be secured at the same time.
If you only need Cloak for a limited period — you're on a business trip, for example — you can also purchase a weekly, monthly, or yearly pass for $4, $10, or $100 respectively. And, if you want to try it out before you buy, the company offers a 30-day free trial.
Given how much of our daily life and business is conducted online, the question isn't really if you can afford to sign up for Cloak — it's if you can afford not to.
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