10 Custom GPTs SaaS Teams Should Actually Be Using

Let’s be real — most AI tools aren’t built for the real world of SaaS marketing.

You’ve got targets to hit, channels to scale, content to produce, and zero time to babysit generic “assistants” that spit out vague fluff or irrelevant prompts.

But some GPTs are different.

The right ones can help you:

• Reverse-engineer paid targets without spreadsheets.
  
  
• Generate new copy variants in minutes.
  
  
• Write smarter content briefs (with SEO in mind).
  
  
• Automate email sequences or social hooks.
  
  
• Save hours on repetitive, high-friction tasks.
  
  

And that’s where this list comes in.

How These GPTs Were Chosen

We tested dozens of GPTs with one simple question in mind:

Would this actually save a SaaS marketer time or improve output quality?

We focused on tools that:

• Solve a specific marketing or growth task.
  
  
• Have fast results.
  
  
• Fit naturally into real SaaS workflows (especially in paid, SEO, and content).
  
  

To make it easier to scan, we grouped them into core use cases below:

1. Planning & Forecasting.
   
   
2. Conversion & Copy.
   
   
3. SEO & Content.
   
   
4. Automation & Assistants.

Let’s dive in.

Planning & Forecasting

SaaS PPC Leads Calculator by Aimers

We built this one ourselves at Aimers — because too often, SaaS marketers are handed a budget and asked:

 “What can we actually get for this?”

This GPT helps you reverse-engineer your pipeline. In seconds, it calculates:

• the number of leads you can generate.
  
  
• your expected CPA and CPC.
  
  
• your projected CTR across campaigns.
  
  

It’s simple, fast, and made specifically for SaaS growth teams running paid search and social. No more spreadsheet agony.

‍PPC Support and Strategy Advice

Think of this GPT as your friendly freelance PPC strategist. It doesn’t just answer questions — it gives well-reasoned recommendations for campaign structure, keyword types, and budget planning.

Great for in-house teams that need backup thinking without booking a call.

Conversion & Copy

Landing Page Creator from Hubspot

Whether you're launching a new feature or running a promo campaign, you often need a quick, clean landing page — like, yesterday.

This GPT builds conversion-focused landing page copy based on your product, offer, and target audience.

Perfect for quick iterations or first drafts for A/B tests.

Ad Copy Creator from URL

Paste your SaaS product URL, and this GPT turns it into ready-to-test ad copy — across Google, LinkedIn, or Meta.

It scans your messaging and gives back multiple headlines, descriptions, and CTAs tailored to ad formats. A massive timesaver for performance teams.

Viral Hooks Generator

Need scroll-stopping copy? This GPT helps generate creative hooks for SaaS features, content, or campaigns — inspired by behavioral psychology and viral copy frameworks.

Helpful for crafting headlines, email subject lines, or attention-grabbing social intros.

SEO & Content

Quality Raters SEO Guide

Most SEO tools throw keywords at you. This one? It teaches you how Google thinks — based on the actual Quality Rater Guidelines.

If you’re creating long-form content or optimizing product pages, this GPT helps align your site with what really matters in SEO.

FREE AI SEO Keyword Research Tool

It’s a solid companion if you don’t have an Ahrefs subscription — or if you just need ideas on the fly.

You enter a topic or phrase, and it returns keyword clusters, related search queries, and even intent type suggestions. Use it to draft content outlines or validate topic ideas without opening another tab.

Blog Post Generator

Need a solid draft for a product-led blog or resource page? This GPT gives you structure, subheads, CTA suggestions, and SEO-friendly phrasing.

Good enough to hand off or polish yourself.

Automation & Assistants

Automated Email Marketer

Lifecycle flows, promo emails, and onboarding sequences — this GPT builds out full campaigns with strong pacing and tone.

You give it a scenario (e.g., “user completed signup but didn’t activate”), and it generates a few well-structured emails you can plug into your tool of choice. Helpful for CRM or growth folks managing flows solo.

Prompt Engineer

Yes, a GPT that makes you better at GPT. This one helps you write smarter prompts for better output across all the tools above.

Meta? Sure. But incredibly useful if you’re serious about scaling with AI.

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Picking the right GPTs is great — but turning insights into real growth takes strategy. At Aimers, we help SaaS and tech companies run smarter campaigns, lower acquisition costs, and scale pipeline sustainably.

Book a free intro call — let’s talk about how we can help you hit your goals.