English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Android market is a place where developers offer paid and-or free apps tousers. Free apps are interesting to users because they can try them immediatelywithout incurring a monetary cost. However, free apps often have limitedfeatures and-or contain ads when compared to their paid counterparts. Thus,users may eventually need to pay to get additional features and-or remove ads.While paid apps have clear market values, their ads-supported versions are notentirely free because ads have an impact on performance.  In this paper, first, we perform an exploratory study about ads-supported andpaid apps to understand their differences in terms of implementation anddevelopment process. We analyze 40 Android apps and we observe that (i)ads-supported apps are preferred by users although paid apps have a betterrating, (ii) developers do not usually offer a paid app without a correspondingfree version, (iii) ads-supported apps usually have more releases and arereleased more often than their corresponding paid versions, (iv) there is no aclear strategy about the way developers set prices of paid apps, (v) paid appsdo not usually include more functionalities than their correspondingads-supported versions, (vi) developers do not always remove ad networks inpaid versions of their ads-supported apps, and (vii) paid apps require lesspermissions than ads-supported apps. Second, we carry out an experimental studyto compare the performance of ads-supported and paid apps and we propose fourequations to estimate the cost of ads-supported apps. We obtain that (i)ads-supported apps use more resources than their corresponding paid versionswith statistically significant differences and (ii) paid apps could beconsidered a most cost-effective choice for users because their cost can beamortized in a short period of time, depending on their usage.

Comprehension of Ads-supported and Paid Android Applications: Are They Different?