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Overall score
84/100
Verdict
Good
Pricing
Free
Performance radar — Fly.io
Score breakdown
Developer UX
CLI, dashboard, git-push deploys, and setup speed.
Source: RadarTrek research
Performance
Cold start times, global CDN, and throughput.
Source: RadarTrek research
Price / Value
Cost for typical workloads, free tier, and scaling costs.
Source: RadarTrek research
Scalability
Auto-scaling, traffic spikes, and multi-region support.
Source: RadarTrek research
Reliability
Uptime SLA, incident history, and monitoring tools.
Source: RadarTrek research
Ecosystem
Integrations, add-ons, databases, and storage built-in.
Source: RadarTrek research
Fly.io deploys Docker containers to edge locations worldwide with fast startup times. Excellent for latency-sensitive apps or APIs. More ops-friendly than pure PaaS alternatives. Pay-per-use with a free allowance.
In our independent evaluation across 6 scored dimensions, Fly.io earns an overall score of 84/100 — a strong result in the dev hosting category. The platform is available including a permanently free tier, accessible to teams at any budget level. The score of 84 places it in the good tier of our dev hosting rankings, where we assess tools on criteria that matter to builders: developer ux, performance, price / value, and more.
Fly.io scores highest on Performance (92/100) and Scalability (90/100), placing it among the stronger performers in those areas within the dev hosting category. The dimensions with the most room for improvement are Ecosystem (72/100) and Developer UX (78/100) — teams who weight these criteria most heavily should compare Fly.io carefully against alternatives before committing. The free entry point makes it easy to validate Fly.io before committing to a paid plan — a practical advantage when evaluating a new tool category. Our recommendation: Fly.io is worth a serious evaluation for teams that prioritise performance — use the radar chart and dimension breakdown on this page to see at a glance whether its profile matches your priorities.
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Yes — Fly.io is free to use with no trial period or credit card required. It offers a permanently free tier, though paid plans with higher limits or additional features are typically available. Check the official pricing page for current plan details.
Fly.io scores highest on Performance in our independent assessment — 92/100, placing it among the stronger performers in this dimension within the dev hosting category. Cold start times, global CDN, and throughput.. Teams who count performance as a primary criterion should put Fly.io high on their evaluation list.
The lowest-scoring dimension for Fly.io in our testing is Ecosystem (72/100). This does not make it the wrong choice — if ecosystem is not a priority for your use case, the gap is irrelevant. But teams who weight ecosystem most heavily should compare Fly.io carefully against alternatives before committing, using the radar chart on this page to see the full profile at a glance.
Fly.io earns an overall RadarTrek score of 84/100 — a strong result in the dev hosting category. Scores above 75 indicate a tool that performs well across most dimensions without a critical weakness. At 84/100, Fly.io is a reliable choice for most teams evaluating this space. Scores are reviewed when significant updates are released, so the number reflects the current version of the product.
The best alternative to Fly.io depends on which dimension matters most to you. Use the "Compare with" links in the sidebar to see a head-to-head radar chart against any specific competitor in the dev hosting category. The main dev hosting category page ranks all tools by overall score and lets you filter by dimension to find alternatives that lead on your priority criterion.
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Specs