Last verified May 2026 · 4 min read
About SignupDrop.com
Independent editorial reference for signup conversion. The cited research, a free per-field cost calculator, and benchmarks by industry, auth method, and device. Published by Digital Signet.
Why this site exists
The literature on signup drop-off is scattered. Baymard Institute charges roughly $200 per month for the canonical e-commerce form-abandonment dataset. Mixpanel and Pendo publish annual Product Benchmark reports for free but only segment broadly. Amplitude's benchmarks are buried in their North Star Playbook. OpenView, Reforge, and Lenny Rachitsky cover signup as a small part of broader SaaS or product-growth content. Auth0's data on OAuth and magic-link conversion is mixed with marketing for their own product. Heap, Userpilot, and Segment publish helpful but vendor-flavoured data.
The result: a growth PM or founder weighing one extra field, an email verification gate, or an OAuth-vs-email decision cannot read one page and get the cited numbers. They have to assemble the picture from a paywall, three vendor blogs, and a 350-page UX book.
SignupDrop.com collects that data, runs the math, and surfaces it on one site with every number cited inline. The free per-field cost calculator at /calculator turns the cited benchmarks into a concrete dollar figure for a specific signup flow. The benchmarks page at /benchmarks consolidates the cross-publisher SaaS, B2B, B2C, ecommerce, fintech, and dev-tools signup conversion rates into one stratified reference.
Who builds this
EDITOR
Oliver Wakefield-Smith
Founder, Digital Signet. Signup drop-off sits at the intersection of product, growth, and engineering work I have been involved in for the past decade. SignupDrop.com is part of a six-publication editorial series on the main leaks in a SaaS business: signup (this site), product (featurebloat.com), engineering (codesmellcost.com), context-switching (contextcost.com), retention (renewaltrap.com), and billing (billcreep.com).
Editorial position
This site is not affiliated with Baymard Institute, Nielsen Norman Group, Luke Wroblewski, Mixpanel, Amplitude, Pendo, Heap, Userpilot, PostHog, Statsig, Auth0, Clerk, Stytch, Supabase, Segment, NIST, or any other organisation named. All cited numbers come from publicly available primary sources. Where a publisher disagrees with another publisher, we name both numbers and say so.
We are also not a customer-acquisition funnel for the Digital Signet consulting practice. The /consulting CTA on some pages is honest about being a CTA, and the site stands on its own as a cited reference without it. The free calculator is free, the per-field cost table is free, and the benchmark numbers are not gated.
Editorial principles
Source pattern
Every numeric claim names a primary source. Baymard, Nielsen Norman, Mixpanel, Amplitude, Pendo, Segment, Auth0, Heap, Userpilot, NIST 800-63B. If we cannot name the source, we do not publish the number.
No paid placements
No vendor pays for inclusion. No reseller deals. No SaaS pricing-page reverse links in exchange for editorial slots. Tool comparisons (auth stack, analytics) reflect independent evaluation.
No affiliate parameters
Some external links carry affiliate tags through public networks (Amazon Associates, Impact). Where they do, they are flagged. The presence or absence of an affiliate path does not shape coverage.
Monthly verification
First business week of each month, every dated claim is re-checked against its source. The footer label and every schema dateModified roll forward together. Last verified May 2026.
Single-source freshness
One constant in src/lib/schema.ts (LAST_VERIFIED_DATE) drives every Updated stamp and every JSON-LD dateModified field across 24 routes. No drift between visible date and structured-data date.
Conservative band math
Calculator outputs are estimates. We surface the conservative end of source ranges. Where benchmark publishers disagree, we name both numbers, not just the higher one.
What this site covers
Twenty-three content routes covering the signup layer specifically (form, auth method, verification, password rules, captcha, device, international). Onboarding, activation, retention, and billing are covered by sister sites.
Methodology in brief
The per-field cost calculator uses an 8-10 percentage point drop-off per additional field beyond the second, per Baymard's aggregated checkout research carried over to signup forms by Formisimo / Zuko. Email verification hard gates add 8-20pp drop per Auth0 case data. Captcha friction adds 2-5pp per Cloudflare and Google reCAPTCHA published benchmarks. OAuth lifts conversion 15-25pp on B2C and 8-15pp on B2B per Segment 2023 benchmark data. Magic links lift 15-30pp per Auth0 case data and disclosed numbers from Slack and Notion. Mobile signup runs 5-15pp below desktop per Baymard and Nielsen Norman mobile-form research.
Numbers are central tendencies, not predictions for your specific flow. The right interpretation of the calculator: a directional dollar figure that supports the decision to A/B test a change, not a guarantee of the lift you will see.
Read the full methodology and sources →Contact and corrections
Spotted a stale benchmark, a broken citation, or a number that has drifted since the last verification cycle? Email [email protected]. We aim for a five-business-day correction turnaround and acknowledge the fix in-page with the date.
Disclosures:
- SignupDrop.com is published by Digital Signet, a consulting practice that runs signup-funnel audits. No vendor in the auth or analytics tooling space has any commercial relationship with Digital Signet that influences this site's coverage.
- Some external links may carry affiliate tags through public networks. Where they do, the link is flagged on the page.
- This site is not investment, legal, or tax advice. Benchmark figures are research central tendencies, not guarantees of the conversion lift you will achieve.
- Quoted research remains the property of the publishers named. Fair-use citation only; the underlying datasets are not republished.
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