In our previous post we lost our minds and decided to make Pocket Weather World and Pocket Weather World HD free for a day (normally USD$1.99) . How did it go? Well we’re glad you asked…
In terms of raw download numbers: 32,978 new Pocket Weather World users, and 23,104 HD, for a total of 56,082 new users!
I freely admit, we didn’t expect that many before the sale! I guessed 26,000, Philip 8000 (yeah, who da man!). We didn’t bother to try and optimise our server because our Australian one already supports 400,000+ users, so we figured we could add thousands of people without breaking a sweat. Boy were we wrong:
It turns out there’s one key difference in Pocket Weather World, in that searches for new locations used to take 600ms. No big deal you say, that’s reasonably snappy! True, until 50,000 new people download your app and all go to search at once! Needless to say we went into a mad scramble, and 2 hours later we got that search query down to 6ms (props to Philip on that one). Still the fact remains, thousands of new customers had just been exposed to an app that didn’t work.
By the time the sale was over, the server was under control, and we even added more memory to it just for good measure, but the damage had been done. A lot of 1 star reviews, and a lot of people that now associate ‘Shifty Jelly’ with ‘stuff that doesn’t work’.
So with that in mind, let’s get to the juicy bits, after all at least half of those new people got a working app, not a broken one. So when the sale ended did they tell all their friends? Did sales skyrocket? Pocket Weather World averages about $20 a day in sales, it shot up to $427 on the first day, and we got all giddy with excitement, but it rapidly dropped off in the following two days. Our hope is that people who heard about the sale, missed out, and then bought it anyway, but it could also have been people that thought it was free, ignored the button, and just clicked buy. We haven’t received any complaint emails, but you just never know.
Pocket Weather World HD is similar, except it averages closer to $10 a day on the app store, and it’s post sale sales were much more measured.
So what did we learn from all this?
- If you make a paid app free, expect a lot of downloads!
- If you’re app has a server component to it, be sure to test the hell out of it first, and not just assume it will be ok.
- Free app sales will get you a lot of eyeballs, but who knows if they are the right ones, or if there’s any long term affect from doing it.

