CapacityLab
Console
Evidence-led capacity testing

Know what your application can carry.

Connect a GitHub repository. CapacityLab prepares a realistic workload, runs it against the target defined in the methodology, and returns reproducible evidence your team can act on.

Connect GitHub repository See how it works
Explicit methodology · linked evidence
Report excerptgithub.com/acme/checkout
Pass
Sustained capacity160 requests/s

Checkout database pool becomes the limiting resource above this point.

launch target
150 req/s
p95 at limit
238 ms
CPU headroom
38%
Evidence verifiedMethodology v4 · Launch plan 0b8d…

Railway cost model

Put a traffic target in. See the Railway bill.

Pick the closest product shape and move one traffic slider. The model converts demand into a Railway envelope and monthly estimate.

SaaS applicationAuthenticated product flows backed by an API and database.
Peak traffic1,000 users/hour
132K modeled sessions/month

SaaS application assumes 8 active hours/day, average traffic at 55% of peak, and 0.75 MB of public origin egress per user.

Grafana dashboard previewModeled by peak users/hour · final reports use measured panel renders
CPU
$1.6/mo
CPU projection by peak users per hour
SaaS model · Billable monthly average0.08 vCPU
Memory
$8/mo
Memory projection by peak users per hour
SaaS model · Replica working set0.80 GB
Disk
$0.81/mo
Disk projection by peak users per hour
SaaS model · 30-day retained data5.4 GB
Egress
$4.85/mo
Egress projection by peak users per hour
SaaS model · Monthly public origin97 GB

Pricing

Three plans, in dollars, cancel anytime.

Every plan includes a monthly budget for Runs; each Run shows its exact price before you confirm it. Plans renew automatically until cancelled — cancel online from Settings → Billing.

Starter

$20 / month

The plain plan: everything a Run needs, evidence kept 30 days.

  • $20 of Runs each month
  • evidence kept 30 days
  • 1 concurrent Run · 1 member
  • support: email, 2 business days
Subscribe to Starter

Team

$100 / month

Longer retention: raw test output and evidence kept a full year.

  • $100 of Runs each month
  • evidence kept 365 days
  • 2 concurrent Runs · 5 members
  • support: email, 1 business day
Subscribe to Team

Scale

$500 / month

SSO (OIDC; SAML on request) and priority support with a shared channel.

  • $500 of Runs each month
  • evidence kept 365 days
  • 4 concurrent Runs · 25 members
  • SSO (OIDC; SAML on request)
  • support: priority — shared channel, same business day
Subscribe to Scale

Sign in to the console, confirm the plan, and Polar's checkout shows the final amount and taxes before you pay. Full pricing, refund & cancellation terms.

Talk through your workload

Book a short capacity review.

Bring a repository, a traffic question, or a Railway bill you do not trust yet.


Pressing the button loads the Tymeslot scheduler; nothing is requested from tymeslot.app before that. Open the booking page.

One controlled loop

Repository in. Capacity decision out.

The application stays the target. Test infrastructure stays in support.

  1. 01
    Profile

    Map the user operations and traffic shape that matter.

  2. 02
    Prove

    Run controlled load and faults against the declared target.

  3. 03
    Decide

    Return the limit, bottleneck, cost, and linked evidence.

Traceable by design

Evidence tied to the test you ran.