SaaS Review Site Side Hustle

Build comparison, review, and alternatives sites for software affiliate income

Income Range
$300-$10,000+/month
Difficulty
Intermediate
Time
Flexible
Location
Remote
Investment
Low

10 min read

Requirements

  • Ability to research software categories and compare products honestly
  • Basic SEO knowledge and on-page writing skill
  • Willingness to test tools, update content, and keep notes
  • Understanding of affiliate programs and conversion basics
  • Patience to build traffic before income becomes meaningful

Pros

  1. Can be built as a content asset that compounds over time
  2. Works across many software categories and buyer intents
  3. Low startup cost compared with many service businesses
  4. Can become a portfolio of traffic, rankings, and affiliate revenue
  5. Strong category authority can create durable trust and recurring clicks

Cons

  1. Slow to rank if the site is generic or thin
  2. Requires ongoing updates as tools, pricing, and features change
  3. Affiliate revenue is volatile and conversion rates vary
  4. Weak editorial standards can make the site feel untrustworthy
  5. Many niches are saturated, so category choice matters a lot

TL;DR

What it is: This side hustle is building content sites that help people choose software. The site earns money when readers click affiliate links, sign up for trials, or buy plans after reading comparison pages, reviews, alternatives pages, and "best tools" lists.

What you'll do:

  • Pick a software category with enough buyer intent to support a site
  • Research and test products so the content is based on real differences
  • Write comparison pages, review pages, alternatives pages, and best-of lists
  • Keep pricing, features, and screenshots current as tools change
  • Improve pages for search traffic, affiliate clicks, and reader trust

Time to learn: Usually 3-6 months to get a small site live if you already understand writing and SEO basics. Expect 6-12 months before the site has enough content and trust to be meaningful.

What you need: Good research habits, a willingness to test software, basic SEO skill, and enough patience to publish before results show up.

Note: Software categories, payouts, and SERPs change often. Check current affiliate terms, tool pricing, and search results before choosing a niche.

What This Actually Is

This is not a side hustle about "reviewing apps" in the abstract. It is a business model built around a specific buying moment: someone is trying to decide which software to use.

The page belongs as one cluster because the real job is not "knowing the difference between 38 random tools." The real job is choosing a category where buyers already compare options and where the site can earn commissions or leads from the decision.

Typical examples include:

  • a founder choosing a CRM
  • a freelancer comparing invoicing tools
  • an ecommerce brand choosing a helpdesk
  • a creator picking a webinar platform
  • a small business trying to find the best project management app
  • a security-conscious buyer comparing password managers

The content format changes, but the side hustle stays the same:

  • identify a category
  • compare tools
  • explain the tradeoffs
  • rank or recommend options
  • monetize the decision with affiliate links or lead flows

The best sites feel editorial and useful, not like thin affiliate funnels. Readers should leave with a clearer answer, not more confusion.

Why This Cluster Works As One Page

Most of the old pages were too narrow at the tool-name level. A page about one specific SaaS tool usually does not deserve a separate side hustle unless the tool itself is the business model.

For example:

  • "best email marketing tools for small businesses" is a real content business
  • "review one specific email tool" is usually just one page inside that business

The same is true for:

  • SEO tools
  • hosting tools
  • podcast hosting
  • form builders
  • webinar software
  • time tracking apps
  • live chat software
  • project management tools
  • creator platforms
  • ecommerce helper apps

The user intent is not "I want to build X with tool Y." The intent is "I want to choose software that solves a problem." So comparison sites and review sites belong under the same umbrella.

What You'll Actually Do

Your work is a mix of editorial research, product testing, SEO, and site maintenance.

Typical weekly tasks include:

  • researching a niche and mapping the buyer intent
  • building a content plan around money pages and support pages
  • testing products for real use cases
  • taking screenshots, notes, and pricing data
  • writing comparison tables and recommendation sections
  • updating pages when tools add features, change pricing, or get acquired
  • improving internal links so pages support each other
  • checking analytics, affiliate dashboards, and rankings

At the beginning, you are mostly building inventory:

  • category hubs
  • best-of pages
  • alternatives pages
  • review pages
  • use-case pages
  • comparison pages

Later, the job becomes improving the site economics:

  • which pages earn clicks
  • which pages convert
  • which pages attract links
  • which categories deserve more coverage

The best sites usually focus on a narrow category first and then expand around it. A site that starts with "all software for everyone" usually becomes generic and hard to rank.

What Readers Actually Want From These Pages

Readers usually come to a software comparison page with one simple question: "Which option should I choose for my situation?"

They do not want:

  • a rewritten feature page
  • a giant table with no opinion
  • ten tools ranked with no tradeoffs
  • generic copy that could fit any category

They want a shortcut to a decision.

That means your page needs to make the choice easier. Good pages usually do four things:

  • explain who each tool is for
  • explain who it is not for
  • point out the most important differences fast
  • give a recommendation that feels earned

If your content cannot do that, it may still attract impressions, but it will not become trusted or useful.

How To Choose A Profitable Category

Category choice is the whole game.

Good categories usually have:

  • clear commercial intent
  • enough products to compare
  • buyers who are already searching for decisions
  • affiliate programs or lead value
  • room for original testing and opinion

Better examples are often:

  • ecommerce tools
  • creator tools
  • marketing tools
  • B2B SaaS
  • hosting and infrastructure
  • security software
  • recruiting and hiring software
  • productivity apps

Weaker categories are usually:

  • tiny tools with no search volume
  • broad terms with no buying intent
  • categories where every page is just a feature list
  • niches dominated by giant brands with no room for a smaller site

A simple test:

  1. Search the category and see whether comparison content already ranks.
  2. Check whether there are multiple tools with real user demand.
  3. Look for affiliate programs or recurring commissions.
  4. Confirm that you can test or reasonably evaluate the tools.
  5. Decide whether your site can have a clear point of view.

If you cannot answer those five items, the niche is probably weak.

Content Formats That Matter

A strong review/comparison site does not rely on one page type.

The core formats are:

  • Best-of pages: Best software for a use case or audience
  • Comparison pages: Tool A vs Tool B or category vs category
  • Alternatives pages: "X alternatives" pages for higher-intent searches
  • Review pages: Deep reviews of specific tools
  • Use-case pages: Best software for freelancers, teams, ecommerce, or creators
  • Pricing pages: Pages focused on cost, plans, and value

The pages should work together instead of competing.

For example, a site about podcast software might include:

  • best podcast hosting software
  • podcast hosting vs YouTube
  • podcast hosting alternatives
  • best tools for remote interviews
  • review of one leading platform

That structure creates topical depth and gives internal linking a purpose.

Skills You Need

You do not need to be a software engineer, but you do need to be a serious researcher and a disciplined editor.

Core skills include:

  • SEO basics like search intent, internal linking, and title optimization
  • comparison writing that is specific rather than generic
  • product testing and note-taking
  • affiliate monetization basics
  • basic analytics and conversion tracking
  • editorial honesty so readers trust the site

Helpful skills include:

  • screenshots and simple design
  • spreadsheet work for feature matrices
  • content planning
  • understanding of buyer psychology
  • simple WordPress or CMS management

The biggest mistake is writing from a spec sheet alone. Readers can tell when the page is just paraphrased marketing copy.

Trust And EEAT

This type of site lives or dies on trust.

To strengthen EEAT, the site should show:

  • how tools were tested
  • what criteria were used
  • what the tradeoffs are
  • when a tool is a bad fit
  • who each recommendation is for
  • how often pages are updated

Practical trust signals include:

  • original screenshots
  • pricing dates
  • testing notes
  • author bios with relevant experience
  • clear disclosure of affiliate relationships
  • honest pros and cons

If every page says a tool is great, the site loses credibility fast. Real comparison content needs negative space: what each product does not do well.

Getting Started

Start with one category, not a giant list.

A practical launch plan:

  1. Pick one niche you can explain clearly.
  2. Confirm there is search demand and affiliate opportunity.
  3. Build a site structure with one hub and several supporting pages.
  4. Test the top products and collect screenshots and notes.
  5. Publish the first cluster before expanding.

A good first cluster might look like:

  • one hub page
  • 3-5 best-of or comparison pages
  • 3-5 review or alternatives pages
  • a few supporting educational pages that answer common buyer questions

Do not spend weeks making the site look finished before publishing. You need indexed pages, feedback, and data.

Where To Find Traffic

Traffic usually comes from search first, then from links, newsletters, or social distribution later.

Main traffic sources:

  • Google Search for commercial keywords
  • YouTube or short-form content that supports tool discovery
  • niche communities where buyers ask for recommendations
  • newsletters if you build an audience around the category
  • backlinks from useful comparison resources and original data

The best comparison sites often win by targeting:

  • "best X for Y"
  • "X alternatives"
  • "X vs Y"
  • "X pricing"
  • "X for freelancers"
  • "X for small businesses"

These are not purely informational queries. They are decision-making queries, which is why they can monetize well.

Income Reality

Income is usually slow at first and then lumpy.

Realistic observations:

  • early phase with no rankings: $0-$200/month
  • a small site with some traffic: $200-$1,000/month
  • a focused niche with ranking pages: $1,000-$5,000/month
  • a strong authority site in a good category: $5,000-$10,000+/month

The gap between traffic and income depends on:

  • affiliate commission structure
  • conversion rate
  • search intent quality
  • page quality
  • how often the market changes

Recurrence helps a lot. Some SaaS programs pay once, while others pay monthly or on renewed subscriptions. Recurring payouts make the site more stable.

Common Challenges

This business looks easier than it is.

Common problems:

  • pages become too generic
  • the niche is too broad
  • tools change pricing or features
  • affiliate programs change terms
  • the site has no real point of view
  • content looks like AI-written list spam
  • rankings are slow because the site lacks trust

Another issue is maintenance. A software comparison site is not a "publish once and forget it" asset. If you do not update the pages, they become stale quickly.

The better long-term play is to choose fewer categories and keep them sharp.

The Update Routine That Keeps The Site Useful

The fastest way to ruin this business is to treat updates like optional cleanup.

A practical routine looks like this:

  1. Review the highest-traffic pages first.
  2. Check pricing, screenshots, and key feature claims.
  3. Re-test the tools that get recommended most often.
  4. Rewrite weak intros or recommendation blocks if the page feels stale.
  5. Add notes from real testing instead of just changing dates.

This is where adjacent models like benchmark and tracker affiliate sites and asset-led template sites can teach a useful lesson. The sites that survive are the ones that keep publishing original proof, not just more pages.

Examples Of Good Category Angles

The remaining source pages fit into this one business model because the category is the hook, not the tool name.

Examples of useful angles include:

  • B2B SaaS for CRM, support, and analytics
  • creator tools for podcasting, video, thumbnails, and newsletters
  • ecommerce tools for store owners, apps, themes, and support
  • marketing tools for email, SEO, landing pages, and automation
  • productivity tools for teams, freelancers, and students
  • hosting and infrastructure tools for websites and apps
  • hiring and recruiting tools for small companies
  • security and privacy tools for cautious buyers

Each of those can support comparison pages, but not every tool inside them deserves a standalone business.

Is This For You?

This side hustle fits you if:

  • you can write clearly and compare products honestly
  • you are willing to research instead of guessing
  • you can wait for SEO compounding to work
  • you like working with editorial systems and data
  • you care about building a useful site, not just chasing clicks

It is probably not for you if:

  • you want fast money
  • you do not want to update content
  • you dislike research and documentation
  • you cannot maintain trust with readers
  • you want the site to rank without original effort

Conclusion

Building SaaS review and comparison sites is a real side hustle when the site is based on a clear category, actual testing, and honest recommendations. The money comes from helping people choose software, not from listing tools for the sake of it.

If you pick one good category, build comparison pages around real buyer intent, and keep the content trustworthy and current, this can become a durable content asset rather than a pile of thin affiliate pages.

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