Messaging app with VoIP featuresĪmong the latter, we also have to mention Viber, an app that although it offers us the possibility to send text messages to chat with our contacts, it also comes along with functions that make it a possible alternative to Skype, since its main advantage is that it offers us the chance to make free phone calls and video calls. To a lesser extent we also have to mention Facebook Messenger, and then the rest come long, applications that are downloaded and installed as a complement for the WhatsApp: LINE, Telegram, Kik. WhatsApp is definitely a must on all smartphones because with over a billion users it's hard to conceive a device without it. PDFpen Scan+: You can back down from v1.5 and later to any previous version.There are loads of chat and instant messaging applications out there to use to communicate with friends and family.

PDFpen for iPhone, PDFpen for iPad: You can back down to any previous version. TextExpander touch 3: You cannot backdown from v.3 to v.2. In the case of many iOS apps, a change in major version number will signal a new app so that you will not be able to backdown from v.3 to v.2 like you might for v.2.5 to v.2.1.

This is not a distinction you normally need to be aware of, except in this specific circumstance. In order to have access to an older version of an app, both the older and newer versions need to be the same app, in a technical sense. For example, after purchasing iPhoto for your iOS 8 device, you can install an earlier compatible version of iPhoto from your iOS 7 device. If a compatible version of the app is available for your version of iOS simply confirm that you want to download it.For iPhone the Purchase screen is in the Updates tab. Open the App Store on your device running iOS 4.3.3 or later.The App Store allows developers to offer a compatible, earlier version of an app for earlier iOS version users based on Apple's support article here: I have an older version of iOS, how can I download a version of the app which is compatible?

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