Hyperping is uptime.
SiteLetter is the agency layer.
Your client opens an email. Hyperping does not send one. Hyperping is uptime + status pages + on-call for developer teams. SiteLetter is the agency-shaped alternative: per-page Lighthouse, AI visual regression, and a branded weekly report your client opens, all included at $5/site flat with no Business-tier gating for white-label.
Also evaluating Better Stack, UptimeRobot, or Pingdom? See those comparisons, or browse all alternatives.
Quick verdict
Both tools are good at the jobs they were built for. The decision comes down to which job your retainer is built around.
Developer teams with status pages and on-call
Engineering teams running production services where on-call rotations, escalation policies, multi-step Playwright transaction checks, and public status pages subscribers can subscribe to are core. Status pages are on every Hyperping tier, on-call is built in.
Also a strong fit if your portfolio is tiny enough to fit in Hyperping's Free tier (up to 20 monitors at $0/mo).
Agencies sending monthly client reports
Web design, development, and marketing agencies on retainer. Your client wants Lighthouse scores they recognise, evidence that nothing broke this week, and a branded weekly or monthly email - not a status-page URL to bookmark.
SiteLetter is priced and shaped for that job. $5/site covers every monitored page with full per-page coverage, plus branded scheduled email reports and white-label all included.
"Show uptime. Catch downtime. Hyperping combines reliable monitoring from locations worldwide with built-in status pages & on-call."
"Website monitoring for agencies, delivered by email."
What Hyperping does not ship (that agencies need)
Hyperping ships excellent uptime, status pages, and on-call. The things below are not in the product at any tier (or are gated to the $249/mo Business plan) and are the table-stakes of the agency monthly deliverable.
Lighthouse on monitored pages, not Playwright scripts
Hyperping runs uptime monitoring plus Playwright transaction checks (3 on Essentials, 10 on Pro, 25 on Business). Lighthouse audits with the four-score breakdown - Performance, Accessibility, SEO, Best Practices - are not in the catalogue at any tier. SiteLetter runs Google Lighthouse on every monitored page across every client site, daily, with DNS, TLS, and CDN cache warmup before each audit so the score is stable enough to ship in the client's monthly report.
Day-over-day screenshot diffs, not Playwright failure videos
Hyperping records Playwright check failures as video - useful for a developer debugging a flaky transaction script after the fact. It is not a daily screenshot of the same page compared against yesterday's. SiteLetter captures one full-page screenshot per monitored page every 24 hours and runs an AI classifier across each diff. Rotating banners, cookie notices, A/B test variants get dismissed as cosmetic noise. A real layout break, 404'd asset, or hero image that 500s gets emailed within the hour.
$5/site flat, not a $249/mo tier ladder
Hyperping meters by monitor and tiers the price: Free covers 20 monitors, Essentials $24/mo covers 50, Pro $74/mo covers 100, Business $249/mo covers 1,000. Matching SiteLetter's 15-page coverage on a 5-client portfolio needs 100 monitors (Pro at $74/mo); on a 20-client portfolio, 400 monitors (Business at $249/mo). And that is uptime only - Lighthouse, visual diffing, and the agency-shape report features are not in the bill regardless of tier. SiteLetter is $5/site flat with the full feature set included.
Reports clients receive in their inbox, not status pages they bookmark
Hyperping is status-page-centric: every plan ships hosted status pages, subscriber lists, and incident emails ("we are investigating," "resolved"). What it does not ship is a scheduled monthly email arriving in the client inbox carrying your agency logo, brand colour, custom CTA URL, and reply-to address. SiteLetter is built around exactly that shape. The recipient opens the report from their inbox with no login screen - new external addresses verify ownership once via a one-click link on first send; team members and returning recipients skip the step.
White-label included, not gated to Business
Hyperping's white-label feature is locked to the Business tier at $249/mo. Essentials ($24) and Pro ($74) do not include white-label, which means agency-shape branding starts at $249/mo on their ladder. SiteLetter ships per-client branding (logo, colour, CTA URL, reply-to per recipient) and an org-level toggle that strips the SiteLetter name entirely, included at $5/site with no tier gating.
One URL to onboard a client, not a per-tier monitor budget
Onboarding a client on Hyperping is configuring monitors one at a time, allocating each against your tier's monitor cap, setting per-monitor alert rules, and configuring a status page if you want one. Onboarding the same client on SiteLetter is pasting one URL. The sitemap is auto-fetched, the 15 most important pages are picked, every monitoring service turns on, alert rules seed themselves (SSL escalation 30/14/7/3/1 days, domain expiry, uptime retry verification, Lighthouse threshold), and the report template is pre-built.
Feature-by-feature comparison
The full picture, grouped by category. SiteLetter wins on per-page Lighthouse, visual regression, and branded reports. Hyperping wins on status pages, on-call, Playwright, multi-region, and free-tier uptime. Pick by what your client opens, not by feature count.
| Feature | SiteLetter | Hyperping |
|---|---|---|
| Pricing model | ||
| Pricing unit | 1 site (up to 15 pages) | 1 monitor = 1 URL/host/port |
| Cheapest commercial plan | $5/site (15 pages monitored, all features) | Free $0 (20 monitors); Essentials $24/mo (50 monitors); Pro $74/mo (100 monitors); Business $249/mo (1,000 monitors) |
| White-label included | Yes, included | Business tier only ($249/mo) |
| Free tier ok for client (commercial) work | 14-day free trial of paid features | Yes (20 monitors free forever) |
| Monitoring data retention | 2 years (730 days) across all data types, all subscribers | Tiered: Essentials 7 days / Pro 14 days / Business 30 days / Enterprise custom |
| Per-page services on a client site | ||
| Per-page uptime | Yes, 15 pages per site (homepage every 1 min + 14 subpages every 15 min) | 1 monitor per URL; intervals 20s-5min depending on tier |
| Google Lighthouse audits (Performance / Accessibility / SEO / Best Practices) | Every monitored page, daily, with cache warmup | No |
| AI day-over-day visual regression with classification | Every monitored page, daily, classified | No (Playwright check failure videos exist, not day-over-day diffs) |
| Broken asset detection across pages | Every monitored page, daily | Not in product as a per-page check |
| Site-level services | ||
| SSL certificate expiry alerts | Yes | Yes |
| Domain / DNS monitoring | Yes (domain expiry alerts) | DNS monitoring add-on (Essentials+) |
| Sitemap auto-discovery | Yes (weekly sync) | No (every URL added manually) |
| Public status page | Coming soon | Yes (every tier; multi-lang; custom domain Essentials+) |
| Multi-step transaction monitoring (Playwright) | No | Yes (3 browser checks Essentials, 10 Pro, 25 Business) |
| On-call rotation + escalation | No | Yes |
| Reports your clients receive | ||
| Scheduled client-facing email report | Yes (weekly, bi-weekly, monthly, quarterly) | Status-page subscriber notifications (incident-driven); no scheduled branded email report |
| Per-client branding (logo, color, reply-to) | Yes, included | Business tier only (white-label) |
| Org-level white-label (hide vendor name) | Yes, included | Business tier only ($249/mo) |
| Drag-and-drop report builder | Yes | No (status-page focused) |
| Recipients view reports without a login | Yes (new external recipients confirm once; team members skip it) | Public status pages are accessible without login; scheduled report-side delivery is not in the product |
| Channels and platform | ||
| Multi-region probes | 3 regions (EU primary + US verifier + AP tiebreaker), all data stored in EU | Multiple datacenter regions across 5 zones (DigitalOcean / AWS / Scaleway) |
| Alert channels | Email, Slack | Email, SMS, Phone calls (Pro+), Slack, Discord, Telegram, PagerDuty, OpsGenie, MS Teams, webhooks |
| Public REST API | Coming soon | Yes (all paid tiers) |
| Native mobile app | No | Yes (iOS + Android per hyperping.com) |
Sources: hyperping.com/pricing, features, terms. Verified .
Cost at your portfolio size
Drag the slider to your client portfolio size. Numbers update live. Hyperping pricing reflects their published tier ladder (Free / Essentials / Pro / Business) at the monitor counts required for each scenario.
Hyperping pricing in USD annual rate per their public pricing page. White-label is gated to the Business tier ($249/mo); Essentials and Pro do not include white-label.
Reading these numbers honestly
Hyperping wins on homepage-only cost at small scale. Their Free tier covers up to 20 sites of homepage uptime at $0/mo; SiteLetter at the same size is $100/mo. For pure-uptime use cases at small portfolios with no agency-deliverable need, Hyperping is meaningfully cheaper.
SiteLetter wins on per-page coverage and the agency-deliverable shape. To match SiteLetter's 15-page coverage, Hyperping needs 15 monitors per site, pushing the tier to Business ($249/mo) at 10 sites. And even at the matched price, Hyperping's per-page service is uptime only; Lighthouse, AI visual regression, and branded scheduled client emails are not in the product at any tier (or white-label is Business-only). SiteLetter at $5/site includes all of that.
Cost at common portfolio sizes
"Matching coverage" assumes one uptime monitor per page (15 monitors per site). "Homepage only" is one uptime monitor per site. Hyperping tier auto-selected based on monitor count required.
| Client sites | SiteLetter | Hyperping: matching (15 monitors/site) | Hyperping: homepage only (1 monitor/site) |
|---|---|---|---|
| 5 | $25/mo | $74/mo (Pro) | $0/mo (Free) |
| 10 | $50/mo | $249/mo (Business) | $0/mo (Free) |
| 20 | $100/mo | $249/mo (Business) | $0/mo (Free) |
Source: hyperping.com/pricing, verified .
Where Hyperping genuinely wins
Hyperping is a modern, well-engineered product with a status-pages-plus-on-call DNA. If your retainer is built around hosted status pages clients subscribe to, on-call rotations, or programmable transaction monitoring, Hyperping is the better tool today. The wins below are real.
Public branded status pages on every tier
Hyperping is status-page-centric - even the Free tier includes 1 status page, with multi-language support, custom branding, custom domain (Essentials+), and a TV mode for office dashboards. SiteLetter status pages are on the roadmap but not shipped today. If a hosted public status page your client can subscribe to is core to your retainer, Hyperping wins.
On-call rotations + incident management
On-call schedules with multi-timezone support, escalation policies, overrides for vacation cover, and phone-call alerts (Pro+). If your agency runs an on-call rotation for client infrastructure, this is genuinely useful. SiteLetter has email and Slack alerts; no on-call rotations.
Playwright-based browser checks
Programmable multi-step transaction monitoring with full Chrome, written in Playwright + TypeScript / Node.js. Video recordings on failure for debugging. Useful for ecommerce checkout flows, login funnels, multi-step user journeys. SiteLetter monitors pages individually but does not script multi-step flows.
More probe locations (5 zones vs our 3)
Hyperping probes from multiple datacenter regions across 5 global zones (DigitalOcean, AWS, Scaleway). SiteLetter does triangulated multi-region probing too (EU primary + US verifier + AP tiebreaker, with all data stored in EU) on a flat 1-min cadence. We catch regional outages and suppress false positives, but at lower geographic granularity than 5 zones.
Generous free tier for tiny portfolios
The Free tier covers 20 monitors with 5-min interval checks, 1 status page, 100 status-page subscribers, at $0/mo forever. For a tiny agency (or pre-revenue side project) running pure homepage uptime on up to 20 client sites, that is genuinely usable. SiteLetter has a 14-day trial then paid pricing.
Public REST API + mature integrations
Public REST API across all paid tiers (Monitors, Healthchecks, Status Pages, Incidents, Outages, Maintenance, Reports) with read/write or read-only keys. Integrations with Slack, Discord, Telegram, PagerDuty, OpsGenie, Microsoft Teams, webhooks. SiteLetter has email and Slack today; public API is on the post-launch roadmap.
For developer teams, on-call ops engineers, and any retainer where status pages and incident management are the core deliverable, Hyperping remains the better tool today. We say that here because we mean it.
When to pick which
Three honest scenarios.
Agencies sending client reports
Web design, development, and marketing agencies who want Lighthouse on every monitored page, AI day-over-day visual regression, and a branded weekly report your client opens. $5/site flat, white-label included, no Business-tier upcharge. Even at small portfolios, the deliverable shape is what Hyperping does not ship.
Dev team with status pages + on-call
Engineering teams running production services. On-call rotations, escalation, Playwright transaction checks, public status pages your customers subscribe to. Hyperping is built for this; SiteLetter does not ship on-call or status pages today.
SiteLetter vs Hyperping: FAQ
No. Hyperping ships uptime monitoring (HTTP / host / port), Playwright browser checks (a programmable transaction monitor), and status pages. It does not run Google Lighthouse audits with the four-score breakdown (Performance / Accessibility / SEO / Best Practices) per monitored page. SiteLetter runs full Lighthouse on every monitored page on every site daily with cache warmup, and the scores ship in the weekly client report.
No. Hyperping has video recordings of Playwright browser-check failures (useful for debugging a flaky transaction), but it does not screenshot every monitored page daily and diff against yesterday with AI classification. SiteLetter does: a daily screenshot of every monitored page is compared to the previous day, and AI classifies each diff as noise (rotating banners auto-dismissed), intentional update (logged in the weekly report), or real breakage (missing images, layout collapse, emailed immediately).
Not in the SiteLetter sense. Hyperping ships status-page subscriber notifications (your client signs up on the status page and gets incident alerts), but there is no scheduled per-client branded weekly or monthly report with your agency logo, brand color, custom CTA URL, reply-to address, and a one-click confirm flow. SiteLetter is built around that flow.
White-label exists on Hyperping but is gated to their Business tier at $249/mo. The Essentials ($24/mo) and Pro ($74/mo) plans do not include white-label. For most agencies starting out or running on lean monitoring budgets, that gating moves white-label out of reach. SiteLetter includes per-client branding and org-level white-label at $5/site flat, no tier gating.
It depends on what you actually need. Hyperping's Free plan covers 20 uptime monitors at $0/mo - genuinely cheaper than SiteLetter if homepage-uptime is all you need. But the moment a client expects a monthly report with Lighthouse trends and visual change detection, Hyperping does not ship that, so the comparison stops being apples-to-apples. On matching per-page coverage (15 monitors per site), SiteLetter wins at every realistic agency portfolio size: 5 sites need 75 monitors on Hyperping (Pro tier $74/mo) vs SiteLetter $25/mo; 10 sites need 150 monitors (Business tier $249/mo) vs SiteLetter $50/mo. The honest framing: Hyperping is per-monitor pricing for status-page-centric DevOps; SiteLetter is per-site flat for agency client reports.
Public branded status pages on every tier (Hyperping is status-page-centric; SiteLetter status pages are coming soon). On-call rotations with escalation policies and multi-timezone overrides. Playwright browser checks (programmable multi-step transaction monitoring with video recordings on failure). Probe locations across 5 global zones (vs SiteLetter's 3 regions: EU primary + US verifier + AP tiebreaker, all data stored in EU). Phone-call alerts on Pro and above. Public REST API across all paid tiers. Native iOS and Android mobile apps. If your agency runs on-call rotations for client infrastructure, or your retainer depends on public status pages your client can subscribe to, Hyperping is the better tool today.
Per-page Google Lighthouse on every monitored page daily with DNS/TLS/CDN cache warmup (Hyperping is uptime + status pages, no Lighthouse audits). AI day-over-day visual regression that classifies each diff as noise / intentional / breakage (Hyperping has video recordings of Playwright check failures, not continuous day-over-day classified diffing). Branded scheduled per-client email reports with per-client logo, brand color, reply-to, and a one-click confirm flow for new external recipients (Hyperping has status-page subscriber alerts, not scheduled per-client deliverables). Sitemap auto-discovery: add a domain, SiteLetter picks the 15 most important pages and seeds monitoring rules (Hyperping is per-monitor manual definition). White-label included at $5/site flat with no Business-tier upcharge (Hyperping gates white-label to the Business tier at $249/mo).
Yes, with a nuance. Hyperping's terms prohibit "Use the Services to monitor websites or services you do not own or have authorization to monitor" - so agencies with client authorisation are fine (which is the normal arrangement). Separately, the terms require written consent to "Resell, sublicense, or redistribute the Services without our prior written consent" - so if you intend to resell or sublicense Hyperping as part of an agency offering, prior written consent is required. Most agencies consuming the service for their own client monitoring fall within normal use.
SiteLetter keeps 2 years (730 days) of monitoring data across uptime, Lighthouse, screenshots, asset checks, and reports - uniform across every subscriber, no tier gating. Hyperping retention is tier-gated: 7 days on Essentials, 14 days on Pro, 30 days on Business, custom on Enterprise. For agencies showing month-over-month or year-over-year client trends, SiteLetter's 2-year uniform retention is meaningfully longer.
Yes. Each SiteLetter site covers up to 15 pages automatically (sitemap-discovered and ranked by depth, sitemap priority, and recency), so a 100-monitor Hyperping setup typically collapses into 7-10 SiteLetter sites. Add each unique site once and SiteLetter handles the rest: page selection, every monitoring service enabled, smart alert rules seeded, weekly and monthly client report templates pre-built. The 14-day free trial includes one site so you can validate the full experience on one client site before bringing the rest over.
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Comparison based on publicly available Hyperping pricing and feature documentation, last verified . Hyperping is a trademark of its respective owner, used here for identification and comparison purposes only. SiteLetter is independent and not affiliated with, sponsored by, or endorsed by Hyperping. For the most current Hyperping pricing and feature information, see hyperping.com.
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SiteLetter is the kind of tool you forget you're using, until your client thanks you for the report you didn't write.
- ✓ 2-minute setup. Add a URL. We auto-discover pages, seed alerts, schedule reports.
- ✓ No scripts to install. We monitor from the outside, like a real visitor.
- ✓ Cancel anytime. No credit card to start, no contract.