Fly.io vs Principle
A detailed comparison of Fly.io and Principle in 2026. Compare pricing plans, features, and find out which development service is right for you.
Fly.io
Deploy app servers close to your users globally
Fly.io is a developer tools and infrastructure service that provides deploy app servers close to your users globally. Founded in 2017 and headquartered in Chicago, Illinois, Fly.io offers 3 pricing plans. It offers a free tier as well as paid plans starting from $29/month. Key features include Global deployment, Edge computing, GPU machines, Managed Postgres. Fly.io is a popular choice for users looking for quality development subscriptions.
Principle
Animated and interactive UI design tool for Mac
Principle is a design and creative service that provides animated and interactive ui design tool for mac. Founded in 2015 and headquartered in San Francisco, California, Principle offers 1 pricing plan. Contact Principle for pricing details. Key features include Animation design, Interactions, Auto transitions, Drivers. Principle is a popular choice for users looking for quality design subscriptions.
Feature Comparison
Side-by-side comparison of features and capabilities
| Feature | Fly.io | Principle |
|---|---|---|
| Starting Price | Free | Contact sales |
| Plans Available | 3 | 1 |
| Year Founded | 2017 | 2015 |
| Headquarters | Chicago, Illinois | San Francisco, California |
| Global deployment | ||
| Edge computing | ||
| GPU machines | ||
| Managed Postgres | ||
| Autoscaling | ||
| Private networking | ||
| Animation design | ||
| Interactions | ||
| Auto transitions | ||
| Drivers | ||
| Components | ||
| Sketch import |
Pricing Comparison
Compare all available plans and pricing tiers
Fly.io Pricing
Principle Pricing
Frequently Asked Questions
Is Fly.io or Principle better in 2026?
Both Fly.io and Principle are excellent development services. Fly.io offers Global deployment and Edge computing, while Principle features Animation design and Interactions. The best choice depends on your specific needs and budget.
How much does Fly.io cost compared to Principle?
Fly.io starts at $29/month, while Principle starts at $Free/month. Both offer multiple pricing tiers to fit different budgets.
Can I track both Fly.io and Principle subscriptions?
Yes! TrackMySubscriptions lets you track all your subscriptions in one place, including Fly.io and Principle. Get renewal alerts, spending analytics, and never miss a payment — 100% free.
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Track Both Services in One Dashboard
Whether you choose Fly.io, Principle, or both — track all your subscriptions in one place with smart alerts and analytics.