Consider outsourcing your entire infrastructure management. DevOps as a Service can help take the headache out of scaling and let you focus on your app's content and community. Also, make sure your monetization strategy can sustain your growth - maybe paid features or premium subscriptions?

Hey, huge fan of what ur doing. Your app is awesome and I tell everyone at the gym about it. Hoping you find a way to keep it running smoothly!

Look into serverless architectures. It can really cut down on costs since you're billed based on usage rather than having to maintain a whole server running 24/7.

Servers expensive? Just use a Raspberry Pi and save those bucks. Who cares if it crashes, fitness is overrated anyway.

Scaling is all about the architecture. Consider breaking your app into microservices if you haven’t already. With a fitness app, you likely have peak times when everyone logs their workouts, so look into queuing systems to even out the server load. Don't neglect the database - it’s often a bottleneck. Sharding or switching to a NoSQL solution might give you better performance at scale. Above all, make sure you're only paying for what you need. Opt for a pay-as-you-go model.

lol im just starting out and scared of this part. servers are like a black hole for money from what i hear 😂

First thing's first, profile your code. Look for any inefficient queries or algorithms that can be optimized. Use caching wherever possible. If you're using AWS, their spot instances can save you a ton on server costs. Also, make sure you're only scaling what needs to be scaled - sometimes a single overworked microservice is the culprit.

Been there with my yoga app. What worked for me was looking into auto-scaling cloud services to better manage costs when user load fluctuates. It's great to hear you're getting traction, stay on it!