Is Astro or Substack more popular?

Astro is used by more websites in our catalog: 3,345 use Astro and 463 use Substack.

Does Astro or Substack have higher-authority sites?

Astro sites have the higher median Ahrefs Domain Rating (Astro: 33, Substack: 32).

Is Astro or Substack growing faster?

Between 2026-06 and 2026-07, Astro went from 0.46% to 0.38% of all tracked sites, while Substack went from 0.06% to 0.05%. Substack is gaining ground faster in our index.

Can a site use both Astro and Substack?

No. A site runs a single CMS / website platform, so Astro and Substack are mutually exclusive.

Where does this Astro vs Substack data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

Astro vs Substack — Site Stats Database

Astro vs Substack

A side-by-side comparison of two content management systems, based on the 515,058 CMS sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Astro	Substack
Websites	3,345	463
Market share	0.65%	0.09%
Share of top 10K sites	0.45%	0.02%
Share of top 100K sites

Rank	#15	#45

Median DR	33	32

Average DR	35	34

Median keywords	932	957

Median referring domains	380	435

Median domain age	8 yrs	8 yrs

Average domain age	10 yrs	10 yrs

Average monthly traffic	145,611	258,619

Combined monthly traffic	487,069,381	119,740,796

statmuse.com
LanguageEnglish
DR (Ahrefs)73
Total Keywords753,129
Referring Domains16,256
Domain Age12 yrs
Traffic (Jun 2026)79,889,798
Traffic Trend
TechnologyAstro
ikea.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords1,148,354
Referring Domains275,573
Domain Age30 yrs
Traffic (Jun 2026)74,695,018
Traffic Trend
TechnologyAstro
cargurus.com
LanguageEnglish
DR (Ahrefs)78
Total Keywords1,640,092
Referring Domains59,136
Domain Age26 yrs
Traffic (Jun 2026)42,919,510
Traffic Trend
Technology
worldpopulationreview.com
LanguageEnglish
DR (Ahrefs)86
Total Keywords876,847
Referring Domains61,904
Domain Age14 yrs
Traffic (Jun 2026)26,241,866
Traffic Trend
Technology
couponfollow.com
LanguageEnglish
DR (Ahrefs)76
Total Keywords272,595
Referring Domains11,483
Domain Age16 yrs
Traffic (Jun 2026)25,131,429
Traffic Trend
Technology
michelin.com
LanguageFrench
DR (Ahrefs)90
Total Keywords434,928
Referring Domains60,675
Domain Age32 yrs
Traffic (Jun 2026)24,707,686
Traffic Trend
Technology
grokipedia.com
LanguageEnglish
DR (Ahrefs)77
Total Keywords3,629,400
Referring Domains8,467
Domain Age1 yr
Traffic (Jun 2026)11,529,448
Traffic Trend
Technology
kingarthurbaking.com
LanguageEnglish
DR (Ahrefs)83
Total Keywords341,317
Referring Domains31,032
Domain Age7 yrs
Traffic (Jun 2026)9,534,553
Traffic Trend
Technology
mattel.com
LanguageEnglish
DR (Ahrefs)84
Total Keywords236,494
Referring Domains45,228
Domain Age31 yrs
Traffic (Jun 2026)8,378,264
Traffic Trend
TechnologyAstro
pons.com
LanguageEnglish
DR (Ahrefs)79
Total Keywords631,026
Referring Domains17,340
Domain Age30 yrs
Traffic (Jun 2026)6,873,673
Traffic Trend
TechnologyAstro

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
statmuse.com	English	73	753,129	16,256	12 yrs	79,889,798		Astro

cbsnews.com
LanguageEnglish
DR (Ahrefs)92
Total Keywords5,029,881
Referring Domains486,461
Domain Age31 yrs
Traffic (Jun 2026)59,376,408
Traffic Trend
TechnologySubstack
substack.com
LanguageEnglish
DR (Ahrefs)94
Total Keywords5,643,513
Referring Domains561,764
Domain Age16 yrs
Traffic (Jun 2026)51,156,090
Traffic Trend
Technology
thefp.com
LanguageEnglish
DR (Ahrefs)76
Total Keywords39,018
Referring Domains17,521
Domain Age24 yrs
Traffic (Jun 2026)738,323
Traffic Trend
TechnologySubstack
azdesertswarm.com
LanguageEnglish
DR (Ahrefs)51
Total Keywords11,126
Referring Domains6,455
Domain Age17 yrs
Traffic (Jun 2026)664,536
Traffic Trend
Technology
thebulwark.com
LanguageEnglish
DR (Ahrefs)75
Total Keywords23,103
Referring Domains13,098
Domain Age15 yrs
Traffic (Jun 2026)259,028
Traffic Trend
Technology
brokenpalate.com
LanguageEnglish
DR (Ahrefs)40
Total Keywords3,164
Referring Domains295
Domain Age5 yrs
Traffic (Jun 2026)214,374
Traffic Trend
Technology
r-bloggers.com
LanguageEnglish
DR (Ahrefs)75
Total Keywords27,627
Referring Domains8,306
Domain Age16 yrs
Traffic (Jun 2026)212,820
Traffic Trend
Technology
donaldrobertson.name
LanguageEnglish
DR (Ahrefs)45
Total Keywords1,679
Referring Domains874
Domain Age12 yrs
Traffic (Jun 2026)202,345
Traffic Trend
Technology
noahpinion.blog
LanguageEnglish
DR (Ahrefs)73
Total Keywords10,103
Referring Domains5,453
Domain Age3 yrs
Traffic (Jun 2026)174,978
Traffic Trend
Technology
jonathanlack.com
LanguageEnglish
DR (Ahrefs)11
Total Keywords6,130
Referring Domains697
Domain Age14 yrs
Traffic (Jun 2026)174,145
Traffic Trend
Technology