Growth hacking isn't about tricks. It's about finding the highest-leverage channels and tools for your stage, then moving fast. The good news: you don't need a big budget to get started.
These are the free growth hacking tools that professionals actually use. Every tool here has a genuinely useful free tier (not a 7-day trial), and most are used daily by growth teams at funded startups.
We've organised them by function so you can go straight to what you need.
AI Content and Copywriting Tools
1. ChatGPT (OpenAI)
The default starting point for growth copywriting. Use it for ad variations, email subject lines, landing page copy, blog outlines, and competitive research prompts. The free tier (GPT-4o mini) is capable enough for most copy tasks.
Free tier: Yes. GPT-4o mini with unlimited usage. GPT-4o available with daily limits.
2. Claude (Anthropic)
Better than ChatGPT for long-form content, analysis, and nuanced copy. Claude handles large context windows well, making it useful for rewriting entire landing pages or analysing competitor copy in bulk.
Free tier: Yes. Claude 3.5 Haiku with daily limits on the free plan.
3. Perplexity AI
AI-powered search with citations. Useful for competitive research, finding data points for content, and quickly understanding a new market. Results cite sources, which reduces hallucination risk for factual copy.
Free tier: Yes. Unlimited standard searches.
4. Gamma
AI-generated presentations and landing pages in minutes. Useful for pitch decks, proposal pages, and internal growth reports without a designer. Surprisingly good output for minimal effort.
Free tier: Yes. 400 AI credits on signup.
5. Canva
The go-to free design tool for social ads, email headers, blog graphics, and thumbnails. Magic Studio AI features are available on the free tier and include background removal, image generation, and one-click resizing.
Free tier: Yes. Generous free plan with AI tools included.
SEO and Content Tools
6. Google Search Console
The single most important free SEO tool available. Shows exactly which queries drive impressions and clicks, which pages are indexing, and where technical issues exist. Non-negotiable for any growth programme.
Free tier: Completely free.
7. Ahrefs Webmaster Tools
Free version of Ahrefs for your own verified site. Gives you backlink data, technical SEO issues, and keyword rankings. The free tier is limited to your domain but provides data that paid tools charge hundreds per month for.
Free tier: Yes. For verified site owners only.
8. Google Keyword Planner
The original keyword research tool. Requires a Google Ads account (no spend required) and gives you search volume ranges, competition levels, and keyword ideas. Best used in combination with Search Console data.
Free tier: Free with a Google Ads account.
9. AnswerThePublic
Visualises the questions people ask around any keyword. Useful for blog topic ideation, FAQ sections, and understanding search intent. The free tier gives you a limited number of searches per day.
Free tier: Yes. 3 searches per day.
10. Screaming Frog SEO Spider
Desktop crawler that audits your site for broken links, duplicate content, missing meta tags, and redirect chains. The free version handles up to 500 URLs, which is enough for most small sites.
Free tier: Yes. Up to 500 URLs.
11. Ubersuggest
Keyword research, site audit, backlink data, and content ideas in one dashboard. The free tier is limited but useful for initial keyword research when you're not yet ready for a paid SEO subscription.
Free tier: Yes. 3 searches per day.
12. AlsoAsked
Shows related "People Also Ask" questions from Google for any keyword. Invaluable for content briefs and finding semantic keywords to include in posts targeting competitive terms.
Free tier: Yes. Limited free searches per month.
Email Marketing and Automation
13. Mailchimp
The most widely used email platform. The free tier gives you up to 500 contacts and 1,000 sends per month. Good for early-stage list building, welcome sequences, and basic segmentation.
Free tier: Yes. 500 contacts, 1,000 emails per month.
14. Brevo (formerly Sendinblue)
Better free tier than Mailchimp for volume. 300 emails per day with unlimited contacts on the free plan, plus SMS marketing, automation workflows, and a landing page builder. The automation features on the free tier outperform most competitors.
Free tier: Yes. Unlimited contacts, 300 emails per day.
15. Beehiiv
Built for newsletter growth. Free tier supports up to 2,500 subscribers with no platform fee. Includes referral tools, analytics, and a clean writing editor. The best free option for building a newsletter as a growth channel.
Free tier: Yes. Up to 2,500 subscribers.
16. Hunter.io
Finds professional email addresses from domain names. Essential for outbound prospecting and partnership outreach. The free tier gives 25 searches per month.
Free tier: Yes. 25 searches per month.
17. Lemlist
Cold email and LinkedIn outreach automation with personalised image and video templates. Strong for B2B lead generation campaigns.
Free tier: 14-day free trial (no credit card required).
Social Media and Content Distribution
18. Buffer
Schedule posts across Instagram, LinkedIn, Facebook, X, and TikTok from one dashboard. The free tier covers 3 channels and 10 scheduled posts per channel, which is enough for consistent organic social without paying.
Free tier: Yes. 3 channels, 10 posts each.
19. Taplio
AI-powered LinkedIn content tool. Helps you write posts, schedule content, and analyse what performs. LinkedIn organic reach is still significantly underutilised by most B2B growth teams.
Free tier: 7-day free trial.
20. Opus Clip
AI video editor that cuts long-form videos into short clips optimised for social media. Uses AI to identify the most engaging moments and add captions automatically. Free tier gives you 60 minutes of processing per month.
Free tier: Yes. 60 minutes per month.
21. Repurpose.io
Automatically repurposes video content across platforms (YouTube to LinkedIn, TikTok to Instagram Reels, etc.). Set up once and multiply distribution with no extra effort per post.
Free tier: 14-day free trial.
Analytics and Data Tools
22. Google Analytics 4
The standard for web analytics. GA4 uses an event-based model that gives more flexibility than older analytics platforms. Set up custom events, conversion funnels, and audience segments. Free with no practical usage limits for most sites.
Free tier: Completely free.
23. Microsoft Clarity
Unlimited session recordings and heatmaps with no caps. Integrates directly with GA4. There is no reason not to have it running on every site you manage.
Free tier: Completely free, no session limits.
24. Hotjar
Heatmaps, session recordings, and user surveys. Reveals how visitors actually interact with your pages: where they click, where they scroll, where they drop off. Essential for conversion rate optimisation.
Free tier: Yes. 35 daily sessions, unlimited heatmaps.
25. Mixpanel
Product and event analytics for SaaS and apps. Tracks user behaviour, retention, funnels, and cohort analysis. The free tier gives you 20 million monthly events, which is more than enough for early-stage products.
Free tier: Yes. 20 million events per month.
26. Databox
Connect GA4, Search Console, Mailchimp, and other data sources into a single reporting dashboard. Free tier supports 3 data source connections. Good for client reporting without building dashboards from scratch.
Free tier: Yes. 3 data connections, 3 dashboards.
Landing Pages and Conversion Optimisation
27. Carrd
The simplest tool for building high-converting single-page sites. Free tier gives you up to 3 sites. Useful for launching a landing page to validate an offer before building a full site.
Free tier: Yes. Up to 3 sites.
28. Tally
Free form and survey builder with a generous free tier. Unlimited forms, unlimited submissions. Useful for lead capture forms, waitlists, and customer research surveys. Cleaner and more conversion-focused than Google Forms.
Free tier: Yes. Unlimited forms and submissions.
29. Kit (formerly ConvertKit)
Email-first platform with landing page and form builder built in. The free tier supports up to 10,000 subscribers and includes unlimited landing pages. Strong for creator-led businesses and content-driven lead generation.
Free tier: Yes. Up to 10,000 subscribers.
30. Unbounce
AI-assisted landing page builder with conversion intelligence built in. Recommends copy and layout changes based on what converts in your industry. The smart builder learns from aggregated data across its customer base.
Free tier: 14-day free trial.
Viral Growth and Referral Tools
31. ReferralHero
Build referral programmes, viral waitlists, and ambassador campaigns. The free tier supports up to 200 participants, which is enough to test whether referral is a viable channel before investing in a paid plan.
Free tier: Yes. Up to 200 participants.
32. Viral Loops
Pre-built viral campaign templates including waitlists, referral programmes, and giveaways. Template-driven setup means you can launch a referral loop in under an hour without a developer.
Free tier: 14-day free trial.
33. KingSumo
Viral giveaway tool that grows your email list through social sharing. Works by incentivising entrants to share for extra entries. A well-run giveaway can add hundreds of subscribers in days.
Free tier: Yes. Limited free plan available.
Prospecting and Outreach
34. Apollo.io
B2B contact database with built-in email sequencing. Free tier gives 50 email credits per month and access to 275 million contacts. One of the best free tools for outbound growth programmes at the early stage.
Free tier: Yes. 50 email credits per month.
35. Phantombuster
Automation tool for scraping LinkedIn, extracting contact data, and automating social interactions. Useful for building targeted prospect lists at scale. Free tier gives 2 hours of automation per day.
Free tier: Yes. 2 hours of automation per day.
36. Hunter.io Email Verifier
Beyond finding emails, Hunter verifies deliverability before you send. Reduces bounce rates on cold outreach campaigns and keeps your domain off spam blacklists.
Free tier: Yes. 50 verifications per month.
Product and Onboarding Tools
37. Crisp
Free live chat and helpdesk tool. The free tier gives you 2 agent seats and unlimited chat history, which is enough for early-stage customer support and sales conversations. A strong alternative to paid chat tools for bootstrapped teams.
Free tier: Yes. 2 seats, unlimited chats.
38. Zapier
Connect your tools and automate workflows without code. Over 7,000 app integrations. A single Zap connecting your lead form to your CRM to your email sequence can save hours per week. The free tier gives you 100 tasks per month.
Free tier: Yes. 100 tasks per month.
How to choose which tools to focus on
Don't install all of these at once. Match your tools to your current bottleneck:
- Low traffic: Start with Google Search Console, Ahrefs Webmaster Tools, and ChatGPT for content.
- Traffic but low conversions: Focus on Microsoft Clarity, Hotjar, and Tally for page and form optimisation.
- Converting but not retaining: Focus on Brevo or Beehiiv for email, and Crisp for on-site support.
- Retention is good but growth is stalling: Add ReferralHero or Viral Loops, and Apollo.io for outbound.
Growth hacking isn't about the tools. It's about running structured experiments against a clear bottleneck. These tools remove the cost barrier. The thinking is still yours.
If you want an expert to look at where your growth is actually stuck, our Growth Audit gives you a prioritised action plan for a fixed price.
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