Best uptime monitoring for freelancers managing 10 to 20 client sites

You run ten to twenty client sites and each launch needs uptime checks plus a status page the PM can bookmark. Pricing pages count monitors, not clients — so on client eleven you learn status pages cost $12 each or that free tiers ban commercial work. This guide compares UptimeRobot, Hyperping, Better Stack, and StillOnline on portfolio math for 10, 15, and 20 clients and shows how to bill monitoring in a retainer.

Quick answer

Freelancers with 10–20 sites need one project and one status URL per client. Hyperping Pro bundles 100 monitors but caps status pages at three — a common trap when client fifteen needs a public page. StillOnline Pro ($9/mo) covers 10 clients; Ultimate ($29/mo) covers 11–100 flat. UptimeRobot Team ($33/mo) fits monitor volume but status pages are tiered, and Free bans commercial client work. Count all-in cost at 10, 15, and 20 clients before annual billing.

Uptime monitoring pings your site on a schedule. A status page is a public link with green/red history so the client sees uptime without your inbox. The bill depends on whether the vendor sells monitors (one URL) or projects (URLs plus a status page per client).

One dashboard vs one project per client

At 10–20 retainers you pick isolation: one login with tags, or one project per client with its own status URL.

Do: count prod URLs per client and whether each gets a separate status link. Do not: assume 100 monitors equals 20 client status pages.

Decision tree: clean handoff? → StillOnline Pro per client. One alert inbox? → Ultimate ($29). Lowest monitor cost? → UptimeRobot Team ($33) with tags.

1. List each client: URL count, private status need, alert recipients.
2. Pick isolation before site #3 — renaming later erodes PM trust.
3. Document pass-through billing vs you paying the vendor.
4. Plan client #11: Pro caps at 10 projects; Ultimate or split accounts.

See multiple status pages for agencies for the one-project-per-client workflow.

Compare UptimeRobot, Hyperping, Better Stack, StillOnline

Annual USD, vendor pages checked June 2026.

Hyperping honesty: Pro ($74/mo) caps status pages at 3 per the pricing page despite 100 monitors. Fifteen freelance retainers need fifteen public pages — Essentials ($24/mo) allows only one status page for fifty monitors. Fifteen clients force Business ($249/mo, ten pages max) or a vendor that bundles pages per project.

Do: use the portfolio table and the pre-purchase checklist in transparent pricing comparison. Do not: run client URLs on UptimeRobot Free.

Portfolio all-in cost (10 / 15 / 20 clients)

*Better Stack estimates: one page per client, no phone responder. Confirm on pricing.md.

Verdict: StillOnline Ultimate ($29) stays flat for 11–20 status URLs. UptimeRobot Team wins on monitors with shared-dashboard tradeoffs. See StillOnline vs UptimeRobot.

Client-facing status URL workflow

Give each client a stable /s/client-slug link at launch — not a Slack screenshot when the site blips red at 2 a.m.

Launch chain: health URL live → project created → checks green 24h → status link in client wiki → retainer line item added.

Do: follow agency multiple status pages. Do not: promise custom domains on StillOnline v1 — StillOnline hosts the URL on stillonline.tech/{locale}/s/{id}.

1. One project per client (or tagged monitor group on UptimeRobot).
2. Add the public health HTTPS URL the monitor will hit.
3. Enable private status on Pro for NDA clients — private status for paying customers.
4. Send status URL to PM at launch; store in CRM.
5. Offboarding: disable checks, export screenshots, transfer login if needed.

Bill monitoring as a retainer line item

Vendor cost is $9–29/mo at StillOnline scale; clients rarely want a separate UptimeRobot receipt. Agency guides cite $15–40/mo markup when you include proactive triage and a branded status link in monthly reporting.

Do: add one invoice line with the status URL in deliverables. Do not: absorb Hyperping Business ($249) without a matching retainer tier.

1. Quote monitoring in the proposal before launch, not after the first outage.
2. Pass through vendor cost transparently if the client asks — margin on response time, not secrecy.
3. Revisit pricing when you cross ten projects or add 1-minute checks on Ultimate.

API onboarding new clients on Pro

API is HTTPS commands to create projects without clicking the UI. MCP lets Cursor call checks.create after the health URL is live.

Do: automate from client #4. Do not: add checks before HTTP 200.

1. Verify public health URL returns 200 outside VPN.
2. POST /v1/projects via REST or MCP checks.create from your editor.
3. Attach Telegram or email alerts once per project.
4. Copy /s/{slug} into the client handoff doc and CRM.
5. At client #11, upgrade to Ultimate or split accounts.

Start Free for your own site, then move to Pro $9/mo when you need ten client projects or private status. Manage projects in the dashboard before migrating the full portfolio.

What to do next

Transparent freelance monitoring is a procurement habit: isolation model first, then all-in math at 10, 15, and 20 clients, then status URLs in every launch checklist.

1. Inventory clients and prod URLs; note who needs a private status page.
2. Fill the four-vendor table and portfolio cost rows for your actual count.
3. Pick StillOnline Pro, Ultimate, or UptimeRobot Team — document why in your SOP.
4. Wire status links at launch; add the retainer line before annual vendor billing.
5. Re-run math at client #11 and when a client asks for custom status domains.

See which StillOnline plan fits past ten projects and the transparent pricing guide for add-on traps on other vendors.

Related guides

• Multiple status pages for agencies — one project per client, offboarding handoff.
• Transparent uptime pricing comparison — 12-point fine-print checklist before annual billing.
• Private status page for paying customers — NDA clients and stakeholder-only URLs.
• Best uptime monitoring for indie SaaS 2026 — wider shortlist beyond freelance portfolio math.
• StillOnline vs UptimeRobot — monitors vs projects and status page bundles.
• Public status page URL to share with clients — Better Stack, Instatus compare and support macro templates.

FAQ

Does StillOnline Pro cover 20 freelance client sites?

No — Pro is 10 projects. For 11–20 clients use Ultimate $29/mo or separate Pro accounts per client. See pricing guide.

Can I use UptimeRobot Free for client websites I maintain?

No for commercial work. Use Solo $9+, Team $33, or StillOnline Pro per official Help.

What does Better Stack cost for 15 client status pages?

One free page; ~$12/mo per extra plus monitor blocks — often $189+/mo before the $29 responder tier. Confirm on Better Stack pricing.

One StillOnline account or one per client?

Ultimate ($29) centralizes alerts for up to 100 clients. Separate Pro ($9) accounts simplify pass-through billing and handoff — agency workflow.

Can I automate adding a new client on StillOnline Pro?

Yes — REST POST /v1/projects or MCP checks.create after the health URL is live. API and MCP unlock on Pro.

What should I charge clients for monitoring?

Vendor $9–29/mo plus $15–40/mo markup for status link and alert routing in the retainer.

Does StillOnline include custom domains on status pages?

No. StillOnline hosts status URLs on stillonline.tech/{locale}/s/{id}. Disclose early; compare Hyperping if a custom subdomain is mandatory.