We know that in SMS marketing, the timing is critical in driving engagement. In mobile web, we know that peak times are first thing in the morning (checking travel arrangements) or last thing at night (catching up before going to sleep). What about apps? This useful infographic from Mobclix highlights both when apps are downloaded (38% at weekends) and also when they are used. So what does that mean in practice? Brands should be looking to focus content or in app advertising towards the key activities that happen during those hours. Useful stuff.