Named-tool backlink magnitudes (Ahrefs-indexed, directional): CoSchedule Headline Analyzer 16K+/3.6K+; Coolors 154K+/5K+; ABV calc 2.3K/190+; Adobe Shortcut Mapper 280+/130+; Ahrefs free backlink checker 1M+

Claim (vendor-indexed magnitudes — Ahrefs-counted):

• CoSchedule Headline Analyzer: 16K+ links / 3.6K+ referring domains.
• Coolors (color generator): 154K+ links / 5K+ referring domains.
• Alcohol-By-Volume (ABV) calculator: 2.3K links / 190+ referring domains.
• Adobe Shortcut Mapper: 280+ links / 130+ referring domains.
• Ahrefs' own free backlink checker: widely cited as having earned over one million backlinks.

Source: Ahrefs article (see Ahrefs (Hardwick, 2018/2020) — "online tools and calculators have the potential to attract a LOT of links" because they solve a problem people are already talking about, making linking to your tool a natural next step).

Confidence: Single-source / vendor-incentive flagged — all counts from SEO vendors' own indexes; directional, not audited; drift over time.

Why this matters for Candid: Useful order-of-magnitude reference for "what a great link-magnet tool actually accomplishes." The realistic SMB benchmark per practitioner literature: clearing the first 5-10 referring domains within ~90 days of launch as proof the asset is alive — not 16K.