App Performance and Battery Considerations
A fast, smooth app feels trustworthy; a sluggish one that drains the battery gets uninstalled. Performance on mobile is about more than raw speed — it is also about being a good citizen on the user's device.
Performance is not an afterthought we bolt on at the end; it is something we design for throughout the build.
Performance Is a Feature
Users rarely praise a fast app, but they abandon a slow one without a second thought. Smoothness, quick start-up and gentle battery use all add up to a sense that the app is reliable and well-made. We treat performance as a feature to be designed and protected throughout the build, not a clean-up exercise squeezed in just before launch.
What Affects Performance
- Doing heavy work on the main thread, which causes jank.
- Loading large images or data when smaller would do.
- Frequent background activity that drains battery.
- Excessive network calls instead of sensible caching.
How We Keep It Smooth
- Move heavy tasks off the main thread so the interface stays responsive.
- Cache and reuse data instead of re-fetching it.
- Optimise images and animations for the device.
- Profile the app on real, mid-range hardware, not just the latest flagship.
Frequently Asked Questions
Why test on mid-range phones?
Many of your users will not have the newest device. If the app runs well on modest hardware, it runs well everywhere.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.