ThynkRise This is the short list of AI tools for side income, plus the money apps to put that income to work. ThynkRise has covered dozens of AI tools and money apps, and most of them don’t make this page. The ones here earned a spot because they do one job well, they have a fair way to start (a free plan, a trial, or an open-source version), and there’s a full breakdown you can read before paying for anything.
How we choose: official documentation, pricing pages and user reports (methodology). Links marked partner may earn us a commission at no cost to you. That never changes what gets recommended (disclosure). Prices come from our latest review of each tool, so check the vendor’s pricing page before you buy.
What are you trying to do?
Quick picks: one tool per goal
| If you want to… | Start with | Cost to start | Read first |
|---|---|---|---|
| Automate repetitive work without code | Make.com | Free plan, 2 active scenarios | Make.com review |
| Automate with full control and self-hosting | n8n | Free if self-hosted | n8n review |
| Research with sources you can check | Perplexity | Free tier, Pro $20/mo | Perplexity review |
| Turn your docs or site into a chatbot | CustomGPT.ai | Free trial | CustomGPT review |
| Find content ideas that already work | OutlierKit | 10 free credits, then from $29/mo | OutlierKit review |
| Code with an AI agent for free | OpenCode | Free, open source | OpenCode guide |
| Invest hands-off (US) | Wealthfront | $500 minimum, 0.25%/yr | Wealthfront review |
| Start investing (India) | Zerodha | Free equity delivery | Broker charges compared |
| Compare savings account returns | Our calculator | Free | Savings interest calculator |
Three starter stacks
You don’t need ten subscriptions. Pick the stack closest to what you’re building and add tools only when one becomes the bottleneck.
The $0 stack
$0/month
- Perplexity (free) for research
- Make.com (free plan) for one or two automations
- OpenCode if you’re comfortable in a terminal
For testing whether an idea has legs before spending anything.
The creator stack
From about $49/month
- OutlierKit to pick topics that already outperform
- Perplexity Pro for deeper research per piece
- CustomGPT.ai once your content is worth turning into an assistant
For blogs, YouTube channels and newsletters that publish every week.
The investor stack
$0 to open, fees vary
- A high-yield savings account for the emergency fund
- A robo-advisor (US) or a low-cost broker (India)
- One structured course so you know what you’re buying
For putting side income to work instead of letting it sit.
1. Automate repetitive work
Make.com
A visual, drag-and-drop automation builder that handles branching and error routes better than simpler “if this, then that” tools.
- Best for
- Non-coders automating lead capture, content workflows or reporting
- Cost
- Free: 1,000 credits/month, 2 active scenarios. Paid from about $12/month billed annually
- Skip it if
- You need to self-host for privacy. Look at n8n instead
n8n
Self-hostable automation with custom JavaScript and Python nodes, so your data stays where you put it.
- Best for
- Technical users who want full control over their automation stack
- Cost
- Free when self-hosted; paid cloud plans available
- Skip it if
- You don’t want to manage a server. The learning curve is real
| Make.com vs n8n | Make.com | n8n |
|---|---|---|
| Setup | Sign up and build | Self-host or use cloud |
| Free option | 1,000 credits/month | Free self-hosted |
| Custom code | Limited | JavaScript and Python nodes |
| Pick it if | You want results this week | You want control long-term |
More options: n8n alternatives compared · 15 AI automation tools ranked
2. Research and answers
Perplexity
Answers come with clickable sources, which makes checking claims much faster than with a plain chatbot.
- Best for
- Research you need to cite: articles, reports, product comparisons
- Cost
- Free tier is genuinely usable. Pro is $20/month and bundles several top models; $10/month for verified students
- Skip Pro if
- You only ask a few quick questions a day. The free tier covers that
3. Content and chatbots
CustomGPT.ai
Upload documents or point it at a website, and it builds an assistant that answers from that content instead of guessing.
- Best for
- Course creators, consultants and support pages with a lot of existing content
- Cost
- Free trial, then paid plans
- Skip it if
- You don’t have much content yet. It’s only as good as what you feed it
OutlierKit
Surfaces YouTube videos and topics that are beating their channel’s usual numbers, so you’re not guessing what to make next.
- Best for
- Creators who publish weekly and want topic ideas backed by data
- Cost
- 10 free credits, no card. Hobby $29, Pro $49, Max $199 per month
- Skip it if
- You publish rarely. The credits go to waste on an occasional video
More by use case: AI tools for a content creation business · AI side hustle ideas
4. Plan your time
Motion, Notion AI and Reclaim
Three different ways to stop your calendar running you: Motion auto-schedules your tasks, Notion AI works inside your notes, and Reclaim protects focus time around meetings.
5. Code and build for free
OpenCode
A terminal-based AI coding agent from the team behind SST. It works with the model provider you choose.
- Best for
- Developers who want an AI coding agent without another subscription
- Cost
- No license fee. You only pay for the model you connect
- Skip it if
- You’ve never used a terminal. Start with a chat-based tool first
Also free and local: OpenClaw setup guide
Get the AI Side-Income Starter Kit
Four AI tools, with real scripts, checklists and build recipes for each, plus what each one costs to run. Free PDF.
6. Put the money to work
United States
Wealthfront
Automated investing with rebalancing and daily tax-loss harvesting on taxable accounts.
- Best for
- Hands-off long-term investors who don’t want to pick stocks
- Cost
- 0.25% a year, $500 minimum
- Skip it if
- You want a human advisor or want to choose individual stocks
- Betterment reviewThe closest alternative, with a Premium tier that adds CFP access
- SoFi high-yield savingsNo monthly fees; top APY needs direct deposit or $5,000
- Savings interest calculatorCompare what different APYs actually earn you
- Robo-advisor fee calculatorWhat Wealthfront, Betterment, Vanguard, Fidelity Go and Schwab cost you over time
- AI budgeting appsWhere your side income is actually going
India
Zerodha
India’s best-known discount broker, with flat intraday brokerage and Varsity, a free and genuinely good learning library.
- Best for
- Long-term investors buying stocks, ETFs and mutual funds
- Cost
- Free equity delivery; check annual maintenance and DP charges
- Skip it if
- You want advisory tips. Zerodha is execution only
- How to start investing in IndiaThe beginner walkthrough, step by step
- Best investing apps for beginnersTen apps compared for first-time investors
7. Learn the skills
- Best stock market courses onlineFrom zero to certified
- Top AI coursesTo future-proof your career
- Udemy certificate vs CFA/NISMWhich one is actually worth it in India
- All AI tool reviewsEvery tool we’ve covered, in one place
What didn’t make the list
Plenty of popular tools. We left out anything with no free plan or trial (you shouldn’t have to pay to find out a tool doesn’t fit), tools that mostly repackage a model you can already use directly, and anything we couldn’t verify from official documentation. If a tool you use isn’t here, that isn’t a verdict against it. We just haven’t covered it properly yet.
FAQ
What are the best free AI tools to start a side income?
Perplexity’s free tier for research and Make.com’s free plan for automation. If you code, add OpenCode. That covers research, automation and building without a subscription. See the $0 stack.
Do I need paid AI tools to make money online?
Not at the start. A paid plan makes sense once the free tier is the thing slowing you down, not before.
Make.com or n8n: which should a beginner use?
Make.com, unless you already run servers. It’s quicker to set up and the free plan is enough to learn on. Move to n8n if you hit the credit ceiling or need self-hosting.
Why are there affiliate links on this page?
A few tools pay us a commission if you sign up through our link, at no extra cost to you. Most tools on this page pay us nothing. The picks and the “skip it if” notes are the same either way.
How often is this page updated?
Whenever we publish or update a review that changes a recommendation. The date at the top shows the last change.