Where is the latency in my API request?

Every millisecond reduces user-engagement. Caffeine helps by removing non-backend latency on iOS.

Click a popular app below to see a latency report


We'll make a request to this host and report timings

What does load-time cost?


Amazon found that 100ms of additional load-time in commerce applications will reduce sales by 1%. (See line graph)

Yahoo found that 400ms of additional load-time results in 5-9% less user engagement.

According to Apptentive it costs an app $2.80 to acquire an engaged user.

For every $2,800 spent on acquiring engaged users, an additional 400ms of load time in your app will cost between 50-90 engaged users or about $140-$252, and the engaged users will spend 4% less.





Understand Load Time In Your App
(We'll send you a custom report.)





How Does Caffeine Work?

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