Side-by-side comparison · SEO & Analytics
Ahrefs vs Moz vs PostHog
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Marketers and business owners who want to see what competitors rank for and find keywords worth chasing.
Pick it if: Small businesses, freelancers and in-house marketers who want a friendlier, cheaper SEO toolkit than Ahrefs or Semrush.
Pick it if: Founders and product teams with a web app or SaaS who want analytics, replays and testing in one tool.
Ahrefs scores highest overall, but PostHog gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | Ahrefs | Moz | PostHog |
|---|---|---|---|
| In one line | Keyword research, backlink checks and site audits in one toolkit. | A long-running SEO toolkit for keywords, links and rankings, known for Domain Authority. | Product analytics, session replays, A/B tests and surveys in one tool, with an AI analyst. |
| Pricing model | Freemium | Paid | Freemium |
| Starting price | $29/mo | $49/mo | $0/mo base |
| Free plan | Yes | No | Yes |
| Works with Claude Code | Yes | Yes | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Ahrefs | Moz | PostHog |
|---|---|---|---|
| Overall rating | 4.4Winner | 3.9 | 4.2 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.5 | 4.0 | 3.0 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 5.0 | 4.0 | 5.0 |
| Output qualityHow good the results are before you fix them. | 4.5 | 4.0 | 4.5 |
| Value for moneyWhat you get for the price, including the free plan. | 3.5 | 3.5 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.5 | 4.0 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Ahrefs | Moz | PostHog |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | No | Yes |
| Mobile app | No | No | No |
| Desktop app | No | No | Yes |
| Browser extension | Yes | Yes | No |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | – | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | Yes |
| AI abilities | |||
| Works with your files | Yes | No | No |
| Understands images | No | – | – |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | No | No | Yes |
| Runs agents or automations | No | No | Yes |
| Learns your brand or style | No | – | – |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 8/ 17 | 5/ 17 | 10/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Ahrefs | Moz | PostHog |
|---|---|---|---|
| Plans | Ahrefs Free Free Checking the health and backlinks of a site you own. | Starter $49/mo A single small site. | Free Free Small apps and getting started. |
Starter $29/mo Occasional keyword research on a tight budget. | StandardOur pick $99/mo Small businesses doing regular SEO. | Pay as you goOur pick $0/mo base, then per use Growing apps that outgrow the free limits. | |
LiteOur pick $129/mo A business doing its own SEO seriously. | Medium $179/mo In-house teams and freelancers with several sites. | Boost $250/mo plus usage Teams that need SSO enforcement or HIPAA. | |
Standard $249/mo Freelancers and small agencies. | Large $299/mo Agencies. | Scale $750/mo plus usage Larger organisations. | |
Advanced $449/mo Agencies and in-house teams with many sites. | Enterprise $2,000/mo plus usage Big companies. | ||
Enterprise $1,499/mo billed yearly Large companies that need SSO and unlimited data. | |||
| Which plan to pick | Start on Ahrefs Free to audit your own site. If you want to research competitors and keywords every week, go straight to Lite; the Starter plan's credits run out too quickly to be useful for more than the odd lookup. Each plan includes one user, and extra seats cost $40 to $80 a month. | Try the free MozBar and Domain Authority checks first. If you want rank tracking and site audits for one business, Standard is the sensible plan, and paying yearly saves about 20%. Plan limits change often, so compare them on Moz's pricing page before you buy. | Start free. Add a card to move to pay as you go when you need more projects or longer history, and set billing limits on each product so nothing runs away. The platform packages only matter for compliance or big teams. |
Key features
Pros and cons
| Attribute | Ahrefs | Moz | PostHog |
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Who each one is for
| Attribute | Ahrefs | Moz | PostHog |
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Questions people ask
Which is better, Ahrefs, Moz or PostHog?
Ahrefs scores highest overall in our ratings (Ahrefs 4.4/5, Moz 3.9/5 and PostHog 4.2/5). Ahrefs is best for keyword research and competitor traffic estimates. Moz is best for Checking Domain Authority and backlinks and keyword research for beginners. PostHog is best for seeing how people use your app and finding where sign-ups and checkouts drop off.
Which is cheaper, Ahrefs, Moz or PostHog?
Ahrefs: There's a free plan, and paid plans start at $29/mo. Moz: There's no free plan. Paid plans start at $49/mo. PostHog: There's a free plan, and paid plans start at $0/mo base.
Which is easier to use, Ahrefs, Moz or PostHog?
Ahrefs rates highest for ease of use in our scores. Marketers and business owners who want to see what competitors rank for and find keywords worth chasing.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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