Fly.iovsHeroku

Platform52

Platform48

Score Comparison

Overall

Pricing

Usability

Performance

Support

Reliability

Onboarding

Security

Integrations

Fly.ioHeroku

Signals Comparison

Reliability

Fly.io

Frequent reliability and uptime issues(9/10)
Postgres database outages and crashes(9/10)
Deployment failures and hangs(7/10)
Infrastructure changes break deployments(8/10)
Apps and databases deleted without warning(10/10)

Heroku

June 10, 2025 outage - 15+ hours of downtime(10/10)
Entering sustaining engineering mode - no new features(9/10)
Multiple major outages in June 2025(9/10)
Status page ran on affected infrastructure(8/10)

Pricing

Fly.io

Pricing surprises and unexpected charges(8/10)
Aggressive billing with no alerts(8/10)
Free tier confusion and removal(6/10)

Heroku

Free tier eliminated in November 2022(10/10)
Costs escalate quickly with scale(9/10)
Billing continues after account deletion(8/10)
Eco dynos sleep after 30 minutes(6/10)
Limited payment options - credit card only(4/10)

Onboarding

Fly.io

Steep learning curve and complexity(6/10)

Heroku

No signals

Customization

Fly.io

Limited plug-and-play services(6/10)

Heroku

Limited infrastructure control - vendor lock-in(8/10)

Support

Fly.io

Support tickets go weeks without response(6/10)

Heroku

Customer support described as 'comically bad'(8/10)

Usability

Fly.io

No signals

Heroku

GitHub deployment errors and log tracking issues(6/10)

Pricing Comparison

Fly.io

Hobby (Legacy Free)

Free

Users: 1 user

Storage: 3GB

Limits: Community support only, No billing alerts, Free allowances don't cap bills

No longer available for new orgs, Credit card required, Automatic charges for overages

Launch

Popular

$0/mo

Users: Unlimited

Storage: Usage-based

Limits: No priority support, No SLA, Complex pricing to predict

IPv4 $2/month per app, Volumes $0.15/GB/month (provisioned size), All compute charged even for internal apps

Scale

$29/mo

Users: Per org

Storage: Usage-based

Limits: Usage costs can still spiral unexpectedly

All compute costs additional, IPv4 and storage costs same as Launch

Enterprise

$0/mo

Users: Custom

Storage: Custom

Limits: Must negotiate pricing, Long contract terms typical

Requires sales engagement, Likely minimum commitment

Heroku

Eco Dynos

$5/mo

Users: N/A

Storage: N/A

Limits: Sleeping dynos, not suitable for production, no custom domains on some plans

Dynos sleep after 30 min inactivity (10-30s wake time), hours shared across ALL apps

Basic Dynos

Popular

$7/mo

Users: N/A

Storage: N/A

Limits: No memory scaling, no autoscaling, basic monitoring only

Database separate (Mini Postgres $5/mo), add-ons extra, each dyno billed separately

Standard-1X

$25/mo

Users: N/A

Storage: N/A

Limits: Still single-tenant, no dedicated resources

Standard-2X is $50/mo, databases charged separately, add-ons accumulate

Performance-M

$250/mo

Users: N/A

Storage: N/A

Limits: Still limited compared to raw cloud VMs at similar prices

Performance-L is $500/mo, Shield (compliance) adds more, enterprise pricing opaque

Feature Comparison

Feature	Fly.io	Heroku
Performance
Global edge deployment 35+ regions
Auto-scaling
Deployment
Git Push Deployment Heroku pioneered this
Container Support Docker support
Infrastructure
Firecracker micro-VMs
Pricing
Per-second billing
Free Tier Removed Nov 2022
Billing alerts Not supported
Databases
Managed Redis $3/mo start
Managed Postgres Reliability issues reported
Networking
Private networking WireGuard
Custom domains
Integrations
Add-on Marketplace Extensive options
CI/CD
Review Apps
Features
GPU support For ML workloads
Built-in queues/workers Manual setup required
Scaling
Autoscaling Standard+ only
Platform
New Features Development Sustaining mode Feb 2026
Availability
Always-On ($5) Eco dynos sleep