Same App, Different App Stores: A comparative Study
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"Same App, Different App Stores: A comparative Study" by M. Ali, M. Erfani, A. Mesbah. MobileSoft'17, Buenos Aires, Agentina, 2017.
![Implementing the same mobile
app for different platforms has
become a common industry
practice [Joorabchi et al. ESEM’13]
3](https://image.slidesharecdn.com/same-app-170613135034/85/Same-App-Different-App-Stores-A-comparative-Study-3-320.jpg)
![“So far, there has been no
effort to build such a
database of cross platform
apps that researchers can
analyze” - [Nagappan et al.
SANER’16]
11](https://image.slidesharecdn.com/same-app-170613135034/85/Same-App-Different-App-Stores-A-comparative-Study-11-320.jpg)
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Same App, Different App Stores: A comparative Study
- 1. Same App, Different App Stores: A Comparative Study Mohamed Ali, Mona Erfani, Ali Mesbah May 2017 1
- 3. Implementing the same mobile app for different platforms has become a common industry practice [Joorabchi et al. ESEM’13] 3
- 4. “I downloaded the app so I could place a mobile order only to find out it’s only available through the iPhone app.” 4
- 5. More than 80% of the top-rated apps are cross- platform More than 30 cross- platform Tools 5
- 6. Limited studies on Cross- Platform Apps 6
- 7. Research Goal Understand how the same app is experienced by users on different platforms. 7
- 8. Research Questions 8 RQ1 How prevalent are app-pairs? Do app-pairs exhibit the same characteristics across app-stores? RQ2 Why do some developers make theirs apps only available on one platform? RQ3 Do users perceive app-pairs equally across platforms? RQ4 Are the major user concerns or complaints the same across platforms?
- 9. But … 9
- 11. “So far, there has been no effort to build such a database of cross platform apps that researchers can analyze” - [Nagappan et al. SANER’16] 11
- 12. The Dataset 1 million 1.4 million Used two open-source scrapers to collect iOS and Android apps 12
- 13. id: com.netflix.mediaclientid: 363590051 Can’t use app ids to find pairs Netflix 13
- 14. Restructure Data Swiped Swiped Fruits Pimp My Rims Pimp My Rims FreeSwiped Free Swiped Netflix Netflix Beat the Boss 2 Beat the Boss 3 14
- 15. Restructure Data: Clustering Swiped Swiped Fruits Pimp My Rims Pimp My Rims FreeSwiped Free Swiped Netflix, Inc Beat the Boss 2 Beat the Boss 3 IG Tech AppCore IG Tech Game Hive Netflix Netflix, Inc Netflix 1. Find cluster using developer name 2. Use exact app name to find match in cluster 15
- 16. Finding App-pairs Swiped Swiped Fruits Pimp My Rims Pimp My Rims FreeSwiped Free Swiped Netflix, Inc Beat the Boss 2 Beat the Boss 3 IG Tech AppCore IG Tech Game Hive Netflix Netflix, Inc Netflix 16
- 18. Findings RQ1 80,169 App-pairs Top Categories 68% (Android) and 18% (iOS) apps have Ratings & Stars 18
- 19. Findings RQ1- Ratings 0 1250 2500 3750 5000 Average Ratings 4,892 1,935 iOS Android 19
- 20. Findings RQ1- Stars 0 1 2 3 4 Average Stars 4.04 3.8 iOS Android 20
- 21. Findings RQ1- Prices Ideally, the same app should have the same price on different platforms 88% have different prices Emailed all devs of apps with price difference > $10 • Different monetization strategies • Different set of features • Development/maintenance costs 21
- 22. RQ3 Do users perceive app- pairs equally across platforms? 22
- 23. Measuring User Perception • Number of Downloads • Ratings • Stars • Ratings & Stars Aggregated User Rating (AUR) 23
- 24. Different Metrics for User Perception App Ratings Stars Rank(S) Rank(R) Rank (AUR) A 100 5 1 3 2 B 2796 1.8 3 1 3 C 2173 4.8 2 2 1 24
- 25. 80k App-Pairs 1 ratings 14k App-Pairs Compute AUR 25
- 26. 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 AUR App-pairs Thousands ios-AUR android-AUR Poly. (android-AUR) Poly. (ios-AUR) In 95% of the app-pairs, the Android versions was better perceived by users Findings - RQ3 26
- 27. Snapchat 166,635 3,518,940 AUR: 50% AUR: 80% 27
- 28. Reasons for AUR variance Timing (release/update) and first impressions Support and maintenance efforts App store support and promotional opportunities 28
- 29. RQ4 Are the major user concerns or complaints the same across platforms? 29
- 30. 30
- 31. User Reviews Analyze user reviews of app-pairs to see if there are any discrepancies in the way users experience the same app on two different platforms 80k App-Pairs 500 ratings 2k App-Pairs 1.7 M Reviews Scrapers 31
- 32. User Reviews: Analysis 1.7 M Reviews Feedback Classifier Problem Discovery Feature Request Non-Informative Label 2100 Reviews 32 We use the trained classifier to classify ∼1.7M reviews of the 2K app-pairs.
- 33. iOS Android 6562 1418 2120 Problems Feature Non-informative Findings RQ4 - Feedback 33
- 34. User Reviews: Complaints 350 K Problematic Reviews Complaints Classifier Critical Post Update Price Label 1000 Reviews Feedback Classifier Problem Discovery Feature Request Non-Informative App Features Other 34 We use the trained classifiers to classify ∼350k problematic reviews of the 2K app- pairs.
- 35. Findings RQ4- Complaints 0 25 50 75 100 iOS Android 99 67 4 6 20 24 61 54 App Feature Critical Post Update Price complaints Other 35
- 36. Snapchat iOS Android 45 4 8 13 28 79 59 Feature Critical Update Price Other “Keeps crashing Even after updating snapchat, it's still crashing and when I view my contact's story it just freezes!” “My black and white video doesn't work. It just given the general filters.” 36 AUR: 50% AUR: 80%
- 37. Summary of Findings iOS apps receive more critical and post update complaints while Android receive more complaints related to app features Android versions of cross-platform apps are better perceived compared to iOS 80,169 App-pairs Ratings, Prices, AUR vary across platforms 37
- 39. Thanks for your time & attention! Questions? 39