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AI Tools FAQ

Quick, honest answers to the questions people ask us most about AI tools, from picking one to using it for free. Each answer links to a full guide if you want more.

Not medical advice on the health topics. Always check with a professional before a new health, diet or exercise programme.

Getting started with AI

What is the best AI tool for a beginner?

For most beginners, ChatGPT is the easiest all-rounder and it is free to start. Claude is excellent if your main job is writing. Not sure which fits you? Our quick quiz matches you to one in under a minute.

Which AI tools are free?

Plenty are. ChatGPT, Claude, Gemini and Canva AI all have genuinely useful free tiers. See our pick of the best free AI tools and how to use AI for free.

How do I get better answers from AI?

Tell it who to be, what to do, the background, and the format you want. Our guide on writing better prompts covers it, and you can grab our free prompt packs, which we email straight to you.

Choosing an AI assistant

Is Claude or ChatGPT better?

Claude tends to write more naturally for long pieces, while ChatGPT is the more flexible all-rounder and can make images and browse the web. Both are around $20/month for their paid tiers and both have free plans. Full breakdown: Claude vs ChatGPT.

ChatGPT or Gemini, which should I use?

Gemini is handy if you live in Gmail and Google Docs. ChatGPT is the stronger general assistant for most people. See ChatGPT vs Gemini.

Do I have to pay for ChatGPT?

No. The free plan is enough for most everyday tasks. ChatGPT Plus (around $20/month) adds faster responses and extra features, but try the free version first.

AI images and creativity

What is the best AI image generator?

Midjourney leads on quality, but there are strong free options too. Compare them in best AI image generators and best free image generators.

AI health and fitness

What is the best AI fitness app?

It depends on your goal: Freeletics for bodyweight and HIIT, Fitbod for the gym, Runna for running. Browse them all on our AI health and fitness page. This is not medical advice, so check with a professional first.

Can an AI app replace a personal trainer?

For planning and consistency, AI apps do a lot for a fraction of the cost, but they cannot watch your form or motivate you in person. More in are AI fitness apps worth it.

About LetsDoItAi

Is LetsDoItAi free to use?

Yes. All our guides, comparisons and quizzes are free, and the prompt guides are emailed straight to you.

Are your recommendations honest?

Yes. Our star ratings come from real user reviews on the major review sites like G2 and Capterra, and app store scores for apps. We are honest about each tool's downsides, not just its strengths, and only feature tools we genuinely rate.

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