Optimizing your Apps for Emerging Markets

In the past few years, Android has grown exponentially, and now more than one billion people use Android devices every month from more than 40,000 different device models. Emerging markets like India,China, Brazil and Indonesia are driving this growth. We need to be able to customize the experiences of these people in order to build amazing products. What works for high-end smartphones won't necessarily work on low end phones which are very common in these emerging markets.

In order to accomplish this, we need to be smart about things like performance, network and data. This talk discusses about the challenges that your users face on feature phones and how to overcome those using some tips and tricks which would make a lot of difference. Also covers some examples of how some popular companies optimize their apps for emerging markets.

Transcript

1. Optimizing your Apps for Emerging Markets #DevFestAhm
3. Emerging Markets Drive Growth
5. Everyone is Different
7. 1. Different Phones
9. Small Screens Slow Phones Challenges
10. Optimizations Year Class
12. Optimizations Year Class Redesign
13. Supporting Screen Sizes
15. Optimizations Year Class Redesign Asset Tinting
16. Why Tint Assets? • Need lesser Assets • Less memory used • Faster Iteration Times
17. //Code
18. 6 23 3 5
19. 2. Different Networks
20. 71% 3G Penetration 7.5% 3G Penetration Challenges 500 ms 280 ms
21. Optimizations Dynamic Network Quality Detection
22. //Code
23. Adjust Behavior • Increase/Decrease Compression • More/Less Parallel Network Requests • Pre-Fetch more content
24. Optimizations Dynamic Image Compression Pre Fetching Content
25. 3. Different Data Plans
26. Challenges Sales Image Downloads Dominate Consumed Content
27. Optimizations Image Scaling
29. Appropriate Image Size • Thumbnail, Preview Image, Full Image • Low-res devices might never need a full resolution image • Most times the thumbnail is enough
30. Optimizations Image Scaling Flat Design
32. Optimizations Image Scaling WebP Flat Design
33. JPEG WEBP PNG GIF Lossy Lossless Transparency Animation Comparisons 90% of images sent to Facebook for Android are WebP format
34. PNG 24 kb WebP 10 kb No Noticeable Change
35. Compression • Use Native WebP decoder on Android 4.2 and later • Use libwebp and libpng to transcode back to JPEG and PNG. To avoid the transcoding cost, use JPG with mozjpeg • Compatible with JPEG • 5% size reducation
36. 4. Different Languages
37. Challenges
38. Questions? @vinaygaba
39. http://bit.do/vinaygabafeedback @vinaygaba