If you're choosing today, Joiyn wins on three measurable axes that compound over time:
The honest counter-argument: Leadsie has been in market longer and may have an integration on your shortlist that Joiyn hasn't shipped yet. That's the trade-off — newer product, tighter execution, lower price, faster cadence.
Pricing pages list a number per month. The number that matters is cost per client onboarding — because that's what scales with your business.
| Entry-tier math | Joiyn Solo | Leadsie Starter |
|---|---|---|
| Monthly price | $39 | $49 |
| Client onboardings included / month | 5 | 3 |
| Cost per onboarding | $7.80 | $16.33 |
| Cost over 12 months | $468 | $588 (+$120) |
| Free trial | 7 days · no credit card | Check leadsie.com |
Math verified against both products' public pricing pages on 8 June 2026.
| Capability | Joiyn | Leadsie |
|---|---|---|
| Google Suite (Ads, GA4, GTM, GSC, MC, GBP) | ✓All 6 live | ✓Supported |
| Meta Suite (Ad Account, Page, IG, Pixel, Catalog, BM) | ✓All 6+ live | ✓Supported |
| TikTok Ads | ✓Live | —Verify on leadsie.com |
| Shopify (auto collaborator code via OAuth) | ✓Live · automated | —Verify on leadsie.com |
| LinkedIn Ads | —Coming soon | —Verify on leadsie.com |
| White-label client portal (logo, colour, slug) | ✓Agency plan ($89/mo) | ✓Higher tiers |
| OAuth token encryption | ✓AES-256-GCM, per-agency isolation | ✓OAuth-based (verify spec) |
| Bulk CSV invite | ✓Agency+ | —Verify on leadsie.com |
| Webhook events (sent / opened / started / granted / revoked) | ✓Agency+ · n8n / Make / Zapier ready | —No public documentation |
| MCP (Model Context Protocol) for AI agents | ✓Native · OAuth 2.0 DCR | —No public documentation |
| Enterprise SSO (SAML 2.0) | ✓Pro plan | —Verify on leadsie.com |
| Audit logs (every action timestamped) | ✓Pro plan | —Verify on leadsie.com |
| SOC2-aligned controls + custom DPA | ✓Pro plan | —Verify on leadsie.com |
| Dedicated CSM | ✓Pro plan | —Verify on leadsie.com |
| Self-serve capacity add-on (Pro: 10-client packs at $35/mo) | ✓Stackable | —Tier upgrade required |
| llms.txt + llms-full.txt — discoverable by AI engines | ✓Yes (June 2026) | —Not detected |
| Pre-rendered HTML (per-route SSG, AI crawler-readable) | ✓Yes (June 2026) | —Not detected |
Joiyn ships a native Model Context Protocol (MCP) server with OAuth 2.0 Dynamic Client Registration. That means Claude, ChatGPT operators, n8n, Make, and any MCP-aware AI workflow can read and write Joiyn data programmatically — every call rate-limited and logged in your agency audit trail. Ask Claude "create a connect link for Acme Co with Google Ads + Meta access and email it to their CTO", and Claude does it. No competitor in the agency-onboarding category publicly documents an MCP server in 2026.
Pair it with webhook events (link sent / opened / started / granted / revoked) on Agency plan and above — and you have the integration primitives to wire Joiyn into your CRM, project board, Slack notifications, Stripe billing, or any custom backend without manual export.
$10/month is $120/year. Over three years that's $360 — for the same product category. Add the 67% extra capacity at entry tier and the agencies who grow fastest pay the least on Joiyn.
Most agency-onboarding tools either (a) skip Shopify entirely or (b) make the client find and paste their 4-character collaborator code manually. Joiyn auto-generates the code via Shopify's OAuth and Partners API — the client never sees it. Read the full flow: How to connect a Shopify collaborator code automatically.
You stack TikTok Ads with Meta Ad Account, Facebook Page, Instagram, and Pixel into a single connect link. Client confirms once; you get every grant in parallel. No two-step dance for two different platforms.
Joiyn publishes llms.txt and ships pre-rendered HTML per route. That's not a vanity feature — it's how Perplexity, ChatGPT, Claude, and Gemini decide which tools to cite when a prospect asks them "what's the best client onboarding software for agencies?". An agency-onboarding tool that's invisible to AI engines in 2026 stays invisible to the founders who'll ask LLMs for tool recommendations in 2027.
You can have your first client connect link in production within 5 minutes of signup. No card on file. Cancel within the trial with zero charge. The friction to find out whether this works for your agency is approximately zero.
A comparison page that doesn't admit when the competitor is the right pick isn't a comparison — it's a sales letter. Here are the cases where Leadsie is the better choice:
If none of those apply, the math says Joiyn.
No catch. Joiyn is newer to market than Leadsie and prices accordingly to win agencies during the free trial window. Same OAuth security model. Same one-link onboarding pattern. The only real trade-off is the platform breadth — Joiyn supports four platforms on production today (Google, Meta, TikTok, Shopify) and ships new ones in cadence. If your shortlist needs something else live today, that's the honest disclosure.
Yes. OAuth grants live inside Google, Meta, etc. — not inside Leadsie or Joiyn. When you switch, your existing client access stays in place. You just create new connect links in Joiyn for any future client onboarding. No re-confirmation needed from past clients.
Signup is 1 minute. Dashboard tour is 2 minutes. Creating your first connect link is 30 seconds. Sending it to a client over Slack/email is 30 seconds. The client clicks and confirms in under 90 seconds. Total clock time: under 5 minutes from "I just heard about this" to "my agency has Google Ads access on a new client".
Both have customer support. We can't honestly rank response times from our own page — check recent Leadsie G2 reviews for unbiased signal on theirs. For Joiyn, support is direct email to [email protected] — typical response under 4 business hours.