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Software Development For The Mobile Market

The furious rate of technological change and growth in the mobile market has made it very challenging for developers to strategically plan a bespoke project, not only from a technical standpoint, but also because the market share for smartphones is changing rapidly between different systems.

Until recently, the iPhone iOS dominated the mobile market, but Google Android has now demonstrably overtaken iPhone in terms of market share, due partly to the power of the Google brand and partly to the platform's openness1. Other mobile operating systems include the Blackberry RIM OS ans Windows 8.

As well as the wealth of mobile platforms emerging, there are now more hardware manufacturers than ever producing mobile devices.

When considering how best to incorporate mobile technology into an existing business model, the primary issue for both clients and developers is currently the choice between native apps and web applications - or a combination of the two.

Other issues include:

  • The inherent restrictions caused by loading, caching and latency issues on mobile devices.
  • The unique interaction models in mobile hardware.
  • The lack of adequate data transfer levels within mobile networks at this time.

We also need to consider that “mobile” no longer just means phone handsets; a range of other, new device types have grown in popularity, such as the tablet computer or other devices positioned somewhere between a lightweight laptop and a smartphone, and with some of the characteristics of both.

The growth in mobile technologies has meant that businesses in certain sectors are even receiving most of their web traffic from users browsing in mobile contexts.

Which Platform?

When considering a mobile strategy, one of the big decisions for many clients is whether to focus resources on a Web application or on native apps targeted at specific mobile platforms. There is no "one size fits all" solution to this issue, because of the number of platforms operating, and the best approach for one business may be entirely different to that for another.

An additional complicating factor is the intense competition in mobile software, which is fuelling accelerated change within each of the platforms. Windows Mobile was replaced by Windows Phone 7,  which has now become Windows 8. Both Apple iOS and Android have undergone significant changes with each release, making the task of supporting users a major undertaking, even for a single operating system.

Some of the platforms – Android in particular – are being deployed on devices produced by a long list of manufacturers, each of whom like to modify the operating system to their particular requirements. Meanwhile, Android hardware is now available across a much wider market sector than ever before.

In the early days of the smartphone, the technology was essentially only available to consumers shopping within the top price brackets. Now these handsets have become more accessible in terms of cost, and approximately 60 per cent of people in the UK currently use smartphones.

The result is that developers have to consider a lengthy array of screen sizes, hardware specifications and configurations – and ultimately a range of fundamentally differing models.

Web or Native

There are two broad choices in deploying a system to mobile users:

  • Creating custom native apps targeted at some or all of the major mobile platforms.
  • Developing a Web application that is optimised for mobile access.

There are a number of benefits and drawbacks to each approach, all of which need to be weighed up along with the specifics of any particular project.

Native Apps

Apps targeted at specific mobile platforms enjoy a number of natural benefits:

  • Native access to the user interface creates a level of interaction that is difficult, if not impossible, to achieve through a Web browser.
  • Native apps are in prime position to exploit the unique hardware and software facilities within mobile devices, such as GPS and localisation tools, accelerometers and touchscreens.

The primary consideration when implementing a service using mobile apps is the number of platforms. If targeting a sizeable chunk of the market is necessary, the resources required may be considerable.

Mobile apps distributed commercially through app stores are subject to sales transaction charges. The task of promotion and adoption by new users is also increasingly challenging, as many of the app stores, particularly Android, are becoming extremely overcrowded.

For some purposes, a native app may be primarily used as a marketing resource, providing a supplementary service which highlights some larger branding or commercial objective.

Both short and long term native app development implications include:

  • A diverse skill-set is necessary to develop apps for multiple platforms.
  • There are significant maintenance implications, as the various operating systems, software and hardware contexts are in a constant state of flux.

Prospective clients should therefore look for a demonstrably high level of competence when considering any development services for mobile. A wealth of experience puts Blueberry in a strong position to deliver not only development expertise but sound advice on these issues.

Mobile Web Applications

There are also significant advantages to focusing development resources on Web applications accessible over the mobile network:

  • Only one system need be developed, optimised and enhanced to cater for users.
  • Both development and maintenance are simpler and less labour intensive for a single application, even allowing for the enhancements necessary to cope with user platforms.

Additional positive aspects of the mobile Web include:

  • The sophistication level in mobile Web browsers is advancing at such a rate that in some cases the gap between mobile and desktop functionality is diminishing.
  • For commercial applications, early evidence suggests that consumers are more inclined to make purchases via mobile websites than native apps.2

The fundamental consideration when focusing on the mobile Web is that, while there are tremendous advantages from both development and deployment perspectives, the network technologies and infrastructure have some way to come yet, in terms of specification and support at the client end.

Speed

Mobile Web browsing has changed dramatically over the past couple of years and is predicted to change drastically again over the next two years, largely as a result of 4G.3

Time-frame is therefore an important consideration when planning a mobile project, as the mobile Web market will be totally different once 4G is widely available.

Moreover, technological changes in the coming years will be substantial. Much has already changed. For example, today the screen size of a user's mobile device may be anywhere between the size of the current smaller smartphones all the way up to the size of a small laptop computer, where a tablet device is being used.

An increase in bandwidth and network efficiency will mean speeds at least three times 3G services, with additional improvements suggesting a five-fold increase within the next decade. However, until the widespread deployment of 4G, reliance on Web applications alone is likely to be insufficient for many purposes.

Existing studies of mobile Web service users indicate that speed is valued over functionality, with users frequently frustrated in their attempts to use such services either quickly or successfully at all.4

In fact, statistics revealed through a study by Compuware's web performance division Gomez show that over 80% of users have not been able to complete a task such as a purchase, while around half have abandoned a site because of this problem. In general, over a third of users said they would begin abandoning a site within 5 seconds if it loads too slowly.

Scripting

Web applications are also somewhat limited in terms of both hardware exploitation and user interaction. Innovative uses of scripting can approximate a native experience within a web application, for example via HTML5 and jQuery. However, the native app presently has the ability to create a much more intuitive and immersive user experience.

HTML5

HTML5 is a developing standard which is already starting to have a dramatic impact on the mobile Web. Although the final specification is not expected for several years yet, some major sites have already begun focusing on HTML5, for example the Financial Times newspaper, which released a Web application instead of device-specific apps.

HTML5 has the following improved features:

  • Offline Support - The cache manifest and offline storage database make it possible for mobile developers to store data locally on a device and know that interruptions in connectivity will not affect the user.
  • Canvas and Video - These two features are designed to make it easy to add graphics and video to a page without worrying about plug-ins. The HTML5 APIs allow extensive levels of control over drawing and media playback functions.
  • GeoLocation API - Although not part of HTML5, this specification is often bundled with it because HTML5 enabled mobile phones are generally supporting the GeoLocation API. The API promises to be a key element in bridging the gap between native apps and Web applications, as it will create a standardised way to provide localisation functions.
  • Advanced Forms - The incorporation of the Web Forms 2.0 specification into HTML5 makes for significant improvements in forms within mobile applications.
jQuery Mobile

Mobile Web development relies heavily on external libraries and support tools - some commercial, some open-source.

One of these is jQuery Mobile - an enhanced version of the jQuery JavaScript platform that is optimised for touch interaction. jQuery is a JavaScript library which makes cross-browser programming easier. The mobile version provides a unified set of user interface tools designed to be compatible across mobile browsers.

Additional scripting tools combine with jQuery to create improved user interfaces for mobile Web applications, coming some way towards a native app experience on the Web. Other libraries include The-M-Project, Mobi and jQTouch.

In general, the extent to which Web technologies, including HTML5, can make use of valuable native mobile hardware and software tools is limited, but will almost certainly improve within the next few years.

JQTouch
Native + Web

There are ways in which applications can adopt some of the characteristics of both Web and native apps. In general, the loading issues in mobile devices require efficient applications to adopt well-defined coping strategies such as:

  • Utilising minimal HTTP requests.
  • Carrying out as much processing as possible at server side.
  • Generally minimising data and media content.

When these practises are adopted, there is increased scope for focusing platform specific development on creating lightweight interfaces, with server side processing usable across platforms. This model can allow projects to better maximise on development resources, while still catering for multiple user environments.

For many organisations, deploying both native and Web apps is still seen as necessary. Users are still using them both, and in subtly different ways. There are also specific cases in which it makes sense to target one or more platforms with dedicated apps, where the unique features of that platform have heightened relevance, for example with the superior level of Google Maps support on the Android platform.

Conclusions

For software developers, the dominant issues to consider when undertaking a project for the mobile market are:

  • The pace of change in the mobile market makes strategic planning very difficult.
  • A flexible position must be adopted to provide mobile services while keeping future options as open as possible.
  • While future network technologies will vastly increase the potential of both native and Web apps, for the present applications must necessarily be lightweight.
  • For the immediate future, both Web applications and native apps will continue to have significant relevance.

For prospective clients, the idea of being able to develop a Web application once and deploy it in multiple user environments is an appealing one. However, the pace of change in the mobile market makes strategic planning very difficult.

With end users exploiting multiple environments and communicating through an ever-increasing range of channels, the mobile Web seems most likely to be in a position to reach all of them in the long term. But given its present limitations, focusing exclusively on the Web will remain challenging. The accepted view is that most of the inherent advantages of native apps will be accessible from within Web applications eventually.

References

1 Gartner Says Android to Command Nearly Half of Worldwide Smartphone Operating System Market by Year-End 2012 http://www.gartner.com/it/page.jsp?id=1622614

2 Internet Retailer: Mobile shoppers prefer m-commerce sites over apps, study finds - http://www.internetretailer.com/2011/01/11/mobile-shoppers-prefer-m-commerce-sites-over-apps-study-finds

3 ZDNet: Ofcom: LTE will boost capacity 230 percent over 3G - http://www.zdnet.co.uk/news/mobile-working/2011/05/13/ofcom-lte-will-boost-capacity-230-percent-over-3g-40092774/

4 Gomez: When Seconds Count - http://www.gomez.com/wp-content/downloads/GomezWebSpeedSurvey.pdf

Further Reading:

(a) Mobile Marketer: Usablenet's Jason Taylor discusses the future of mobile commerce - http://www.mobilemarketer.com/cms/news/commerce/10123.html

(b) ReadWriteWeb: Are We Entering the Dark Ages of Mobile Apps? - http://www.readwriteweb.com/archives/are_we_entering_the_dark_ages_of_mobile_apps.php

(c) ReadWriteWeb: Android Becomes Number One in U.S. Smartphone Market Share - http://www.readwriteweb.com/archives/Android_number_one_in_us_smartphone_market_share.php

(d) ReadWriteWeb: Nearly 80% of "On-the-Go" Audience Shops on Mobile, 72% Buy Local Deals - http://www.readwriteweb.com/archives/80_percent_shop_on_mobile_72_percent_buy_local_deals.php

(e) ZDNet: Android shoots past iPhone OS in market share - http://www.zdnet.co.uk/news/mobile-devices/2011/05/19/android-shoots-past-iphone-os-in-market-share-40092829/

(f) ZDNet: Android's rise: Five fuelling factors - http://www.zdnet.co.uk/news/mobile-devices/2010/12/30/androids-rise-five-fuelling-factors-40091244/

(g) TechRepublic: The five factors powering the Android revolution - http://www.techrepublic.com/blog/hiner/the-five-factors-powering-the-android-revolution/6383

(h) TechRepublic: Analysis of mobile development approaches - http://www.techrepublic.com/blog/programming-and-development/analysis-of-mobile-development-approaches/4224

(i) Mashable: Native App vs. Web App: Which Is Better for Mobile Commerce? - http://mashable.com/2011/05/23/mobile-commerce-apps/

(j) AB2BC: Mobile Marketing With Mobile Apps; Are Apps Right For Your Business? - http://www.ab2bc.net/blog/bid/56706/Mobile-Marketing-With-Mobile-Apps-Are-Apps-Right-For-Your-Business

(k) InfoWorld: 13 essential programming tools for the mobile Web - http://www.infoworld.com/d/mobile-technology/13-essential-programming-tools-the-mobile-web-246

(l) VisionMobile: HTML5 and what it means for the mobile industry - http://www.visionmobile.com/blog/2011/06/html5-and-what-it-means-for-the-mobile-industry/

(m) ClickZ: Mobile Web or Mobile Apps? Both, Execs Say - http://www.clickz.com/clickz/news/2076915/mobile-web-mobile-apps-execs

(n) Wall Street Journal: The Ins and Outs of Mobile Apps - http://online.wsj.com/article/SB10001424052748704570704576275132869170342.html

(o) Washington Post: FT Bypasses Apple's iTunes, Launches HTML5 Web App (Free Access First Week) - http://www.washingtonpost.com/business/technology/ft-bypasses-apples-itunes-launches-html5-web-app-free-access-first-week/2011/06/07/AGeM8tKH_story.html

(p) DVICE: Is HTML5 an Apple App Store killer? - http://dvice.com/archives/2011/06/is-html-5-an-ap.php

(q) Web Performance Today: Early findings: 97% of mobile end-user response time happens at the front end - http://www.webperformancetoday.com/2011/04/20/desktop-vs-mobile-web-page-load-speed/

(r) Technical Presentations: State of mobile web performance - http://www.techpresentations.org/State_of_mobile_web_performance

(s) Steve Souders: Mobile comparison of Top 11 - http://www.stevesouders.com/blog/2011/03/14/mobile-comparison-of-top-11/

(t) The Register: 4G uber-auction coming next year - http://www.theregister.co.uk/2011/03/22/4g_uk_auctions/

(u) InfoWorld: HTML5 not yet solving mobile dev issues - http://www.infoworld.com/d/mobile-technology/html5-not-yet-solving-mobile-dev-issues-268

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