Yes. This clarifies the job considerably.

You don't want a framework that gives you homework. You want me to do the ideation, competitive reconnaissance, opportunity discovery and economic modelling; you want to execute.

So I'm going to give you a much more concrete portfolio answer. I also checked current live examples rather than relying only on general SEO knowledge.

One important correction first:

I would not build “quiz + MCQ + mock test” as three separate MojoXYZ businesses.

They are three formats inside a much larger interactive-answer / assessment opportunity.

And I would not make MojoXYZ's primary purpose “a collection of calculators.” Calculator.net already has ~200 calculators, while Omni Calculator has ~3,928; competing directly on generic calculator volume is therefore not the interesting opportunity. (Calculator.net)

The opportunity is to find specific jobs people want done where the existing sites don't completely solve the job.

MY CURRENT MASTER PLAN

The four websites should have four completely different jobs

Website	What I would make it	Main monetization
ExamLion	Indian exam practice + question intelligence	Ads + affiliate + eventually education partnerships
PracticeTestLion	International test/credential preparation engine	Ads + affiliate + commercial leads
JobSalarySky	Salary + career decision intelligence	Ads + affiliate + recruitment/career
MojoXYZ	Low-cost internet-product laboratory	Ads + affiliate + winners spun into larger assets

But now let's get concrete.

1. EXAMLION

Category: Assessment infrastructure

Your existing MCQ idea is only Layer 1.

I would build this:

QUESTION
   ↓
ANSWER
   ↓
EXPLANATION
   ↓
WEAKNESS
   ↓
TARGETED PRACTICE
   ↓
RETEST

The five products I'd build inside ExamLion

Product	Example	Priority
PYQ Explorer	BPSC Polity PYQs	★★★★★
Topic Practice	Fundamental Rights MCQs	★★★★★
Mock Test	BPSC Polity 100Q	★★★★
Mistake Bank	“Questions you got wrong”	★★★★★
Weakness Test	“Your weak topics → 20 questions”	★★★★★

The original opportunity

Don't just store questions. Store question relationships.

For every question:

Exam
Year
Subject
Topic
Concept
Difficulty
Question type
PYQ/probable
Common confusion
Related concepts
Related questions

Then one question becomes a node in a database.

That lets you create:

“Questions related to this concept”

“Questions similar to the PYQ you just got wrong”

“Your weakest 5 concepts”

That is considerably more defensible than another generic MCQ website.

Revenue scenario

These are planning scenarios, not forecasts:

Monthly PV	RPM	Ad revenue
100k	₹100	₹10k
500k	₹100	₹50k
1M	₹100	₹1L
5M	₹100	₹5L

At ₹200 RPM, double those figures.

But the real upside is not necessarily AdSense. A user preparing for an examination has commercial intent around books, courses, test prep, etc.

My verdict

Build.

But build the question system, not a content farm.

2. PRACTICETESTLION

This is where I think you can potentially build something much more commercially interesting than ExamLion.

Category: “I need to pass/complete this thing.”

Look at existing businesses such as Driving-Tests-style practice sites: the user isn't really looking for “100 MCQs.” They're trying to achieve a real-world credential.

So I would structure PracticeTestLion around:

TEST → REQUIREMENTS → PRACTICE → SIMULATION → READINESS

10 actual product directions I'd investigate

Product	Example
Driving tests	California permit test
Road signs	US road signs practice
Citizenship	US citizenship test practice
Workplace safety	OSHA-style practice
Certification	IT certification practice
Licensing	Professional licensing practice
Aviation	Pilot knowledge practice
Nursing	Nursing exam practice
English	IELTS/TOEFL-style practice
Trades	Electrician/plumber/apprenticeship practice

But don't just copy existing test sites.

Add the missing layer:

“What do I need to know before I take this?”

Example:

California Permit Test
        ↓
Requirements
        ↓
Rules
        ↓
Signs
        ↓
Topic tests
        ↓
Full mock
        ↓
Mistake review
        ↓
Readiness practice

That creates a much larger search surface.

And here's a more unusual direction

Micro-credential practice

Don't immediately attack SAT/GRE/IELTS.

Look for smaller tests where:

people have a specific requirement
the official exam is annoying
preparation material is fragmented
commercial intent exists
the test doesn't justify a $300 course

That is exactly the kind of market a lean website can attack.

3. JOBSALARYSKY

This one I would change substantially.

Don't build a salary encyclopedia.

Build:

“What is this job actually worth to me?”

Salary.com already combines salary estimates, job/company salary data and career guidance, so merely creating “average salary” pages puts you into an established category. (Salary)

Your opening is the decision layer.

Product 1 — Salary comparison

SBI Bank Manager
vs
ICICI Bank Manager
vs
HDFC Bank Manager

Then:

Salary
Bonus
Benefits
Location
Experience
Take-home

Product 2 — Location comparison

Software Engineer

Bengaluru
vs
Hyderabad
vs
Pune
vs
Delhi

Then:

salary − estimated living cost

This is much more useful than salary alone.

Product 3 — Career progression

Example:

Software Engineer
     ↓
Senior Software Engineer
     ↓
Lead
     ↓
Manager
     ↓
Director

Show:

typical experience range
salary range
skills
adjacent jobs

Product 4 — “Should I switch?”

This is the interesting one.

Input:

Current salary
New salary
Current city
New city
Rent
Commute
Tax
Bonus
Benefits
Working hours

Output:

Annual gross difference
Estimated take-home difference
Living-cost difference
Commute difference
Effective hourly compensation

Now JobSalarySky is a career calculator, not a salary blog.

4. MOJOXYZ

Now we're at the part where I think your biggest opportunity lies.

Forget “niche.”

MojoXYZ should be:

A factory for discovering tiny profitable internet products.

And because you're using Blogger/static pages, I would deliberately avoid ideas requiring:

databases
user accounts
server-side processing
large APIs
PHP infrastructure
expensive AI inference
file processing on your server

Instead, exploit:

HTML + CSS + JavaScript + static data + client-side computation.

That's an extremely powerful constraint because it forces us toward products with almost zero marginal operating cost.

15 MojoXYZ ideas I would actually test

Here is where I want to go beyond the ideas you've already given me.

1. COST-OF-OWNERSHIP CALCULATORS

Category: Decision tools

Not:

EMI calculator

But:

“What will this thing actually cost me?”

Examples:

car 5-year ownership cost
EV vs petrol
laptop 3-year cost
printer + ink cost
coffee machine cost per cup
appliance electricity cost
subscription annual cost
commute cost
work-from-home vs office cost

Monetization: ads + affiliate.

Difficulty: Low.

Potential: High.

This is the type of calculator I would investigate before another generic percentage calculator.

2. “HOW MANY DO I NEED?” TOOLS

Category: Quantity planning

These are surprisingly useful.

Examples:

how many tiles?
how much paint?
how much concrete?
how many lights?
how much wallpaper?
how many chairs?
how much food for X people?
how many bottles for X guests?
how much soil?
how many boxes?

Omni has already demonstrated the breadth of calculable real-world problems—its categories include construction, food, everyday life, finance, science and many others. (Omni Calculator)

But you don't need 3,900 tools.

You can hunt for specific high-intent microproblems.

3. DATE INTELLIGENCE

Category: Time utility

Timeanddate is the obvious proof that people use a huge number of date/time utilities. It offers countdowns, durations, workday calculations, weekdays, birthdays and many related tools. (Time and Date)

But there are thousands of specific intents.

Examples:

working days between dates
school days calculator
business days excluding holidays
weeks between dates
age on a particular date
retirement countdown
pregnancy week calculator
project deadline calculator
probation end date
notice-period calculator
contract duration calculator
semester countdown

Static + JavaScript.

Perfect for Blogger.

4. DEADLINE CALCULATOR FAMILY

This is a subset I'd particularly investigate.

“If X happens on this date, when does Y happen?”

Examples:

notice period
rent due date
probation end
exam preparation days
visa expiry countdown
subscription renewal
project deadline
warranty expiry
loan payoff date

The underlying engine is almost identical.

So your marginal development cost becomes tiny.

5. “TEXT CLEANING” FACTORY

Category: Productivity

There are already sites such as ConvertCase offering numerous small text utilities, including duplicate-line removal, duplicate-word finding, find/replace, citation generation and image-to-text tools. (Convert Case)

That validates the category.

But I'd attack it with specific micro-intents:

Remove duplicate lines
Remove empty lines
Sort lines alphabetically
Reverse text
Count sentences
Count paragraphs
Extract emails
Extract URLs
Extract hashtags
Extract numbers
Remove HTML
Remove extra spaces
Convert tabs to spaces
Add line numbers
Remove line numbers

All client-side.

Very cheap.

6. STUDENT MICROTOOLS

Category: Education utility

Not another educational website.

Tools:

Grade calculator
Percentage calculator
Marks required calculator
Attendance calculator
Attendance shortage calculator
Study-hours calculator
Exam countdown
CGPA ↔ percentage
GPA calculator
Semester calculator
Rank/percentile calculator

This is where MojoXYZ and ExamLion can eventually cross-pollinate.

7. “WHAT IF?” TOOLS

This is a category I particularly like.

Instead of calculating a static number:

“What happens if I change X?”

Examples:

What if I increase my SIP by ₹2,000?
What if salary increases 10%?
What if rent increases 5%?
What if I work 2 extra hours?
What if I save ₹100/day?
What if I pay an extra EMI?
What if electricity price increases?

This produces a scenario simulator.

Category: Scenario planning

Potentially much more interesting than a basic calculator.

8. COMPARISON ENGINES

Category: Decision support

Examples:

Rent vs Buy
EV vs Petrol
Job A vs Job B
City A vs City B
Plan A vs Plan B
Subscription A vs B
University A vs B
Loan A vs B

The user supplies the variables.

You calculate.

No database required.

9. “TRUE COST” TOOLS

This is a subcategory of comparison that I think deserves its own experiment.

Example:

“₹80,000 salary”

What is the real value?

Salary
− tax
− rent
− commute
− food
− insurance
− work expenses
= effective disposable income

Or:

₹1,00,000 laptop

Purchase price
+
accessories
+
software
+
maintenance
+
electricity
−
resale
=
5-year ownership cost

This naturally connects to affiliate commerce.

10. RANDOMIZER / DECISION TOOLS

Category: Utility/fun

Examples:

random name picker
random team generator
random number
random choice
yes/no decision
dice
coin flip
tournament bracket generator
lunch picker
study-topic picker

But I'd add shareable results.

Timeanddate's countdown generator is a good example of turning a simple calculation into a shareable object: users can create and share a countdown URL. (Time and Date)

That is a useful product lesson:

Don't just calculate. Produce something the user can use/share.

11. HTML / UNICODE / EMOJI

Your original idea belongs here.

But I wouldn't make it the biggest MojoXYZ property.

Build:

Emoji → HTML
HTML → Emoji
Emoji → Unicode
Unicode → Emoji
HTML entity finder
Unicode character finder
Symbol finder
Copy button
Emoji categories

Category: Developer/web utility

Good low-cost experiment.

12. “FILE SIZE / DIGITAL LIFE” CALCULATORS

Category: Tech utility

Examples:

download time calculator
upload time calculator
storage calculator
photo storage calculator
video storage calculator
cloud storage requirement
bandwidth calculator
data usage calculator
internet data consumption

Very easy client-side tools.

Potential affiliate connection:

cloud storage / SSD / internet plans / hardware.

13. WEBSITE / SEO MICROTOOLS

This one is directly adjacent to your own expertise.

Examples:

Title length checker
Meta description length checker
Slug generator
Keyword density checker
Word count
Reading time
UTM builder
Robots.txt generator
Sitemap helper
Canonical URL generator
Open Graph tag generator
Schema markup helper

Category: Professional utility

And unlike a general SEO blog, the tool itself is the content.

14. DEVELOPER MICROTOOLS

Examples:

JSON formatter
JSON minifier
Base64 encoder/decoder
URL encoder/decoder
HTML entity converter
Timestamp converter
UUID generator
Regex tester
Color converter
CSS formatter
JWT decoder
HTTP status lookup

These are technically simple enough for client-side implementation.

15. EMBEDDABLE WIDGETS

Now here's an idea I think is more interesting than your original emoji project.

Build free widgets that other websites can embed.

For example:

Countdown timer

Age calculator

Percentage calculator

Exam countdown

EMI calculator

Random picker

World clock

User copies:

<iframe ...>

and puts it on their website.

Category: Distribution product

Now your website isn't only getting Google traffic.

Other websites distribute your tool.

That is a completely different acquisition mechanism.

THE MOJOXYZ EXPERIMENT TABLE

If I were you, I'd start with these 15, not 1,000.

Idea	Build difficulty	Commercial intent	Affiliate potential	SEO potential	My test priority
True-cost calculators	Low	★★★★★	★★★★★	★★★★	1
Comparison engines	Low	★★★★★	★★★★★	★★★★	2
Deadline/date tools	Very low	★★★	★	★★★★★	3
Quantity calculators	Low	★★★★	★★★★	★★★★★	4
Student calculators	Very low	★★★	★★	★★★★★	5
Text tools	Very low	★★	★	★★★★	6
Website/SEO tools	Low	★★★★	★★★	★★★★	7
Digital-storage tools	Very low	★★★	★★★★	★★★	8
Randomizers	Very low	★	★	★★★★	9
HTML/Unicode	Very low	★★	★	★★★★	10
Developer tools	Low	★★★	★	★★★★	11
Interactive quizzes	Low	★★	★	★★★★	12
MCQs	Low	★★	★	★★★★	13
Mock tests	Medium	★★★	★★★	★★★★	14
Embed widgets	Medium	★★★★	★★★	★★★	15

These are my opportunity hypotheses, not claims that these rankings are guaranteed outcomes.

NOW THE MONEY

You said you love numbers.

So let's make the economics explicit.

Suppose MojoXYZ eventually has:

Scenario A

100 useful tools

Average:

1,000 PV/month/tool
100,000 total PV
₹100 RPM

= ₹10,000/month

Not exciting.

Scenario B

100 tools × 10,000 PV

= 1M PV

At ₹100 RPM:

= ₹1 lakh/month

Scenario C

Some tools have commercial affiliate intent.

Suppose:

1M PV
₹100 RPM ads = ₹1L

PLUS:

5M impressions/click opportunities? No—don't double-count blindly.

Instead imagine:

20,000 outbound commercial clicks
2% purchase conversion
₹500 average commission

= ₹2L affiliate revenue

Total:

~₹3L/month

That's a hypothetical model, not a prediction.

But here's the really interesting scenario

Suppose you build:

300 tiny tools.

Most fail.

200 → almost nothing
70 → small traffic
20 → meaningful traffic
8 → strong
2 → monsters

You don't need 300 winners.

You need a few winners.

That's why MojoXYZ is valuable.

And this is where I would use your CMS

Your existing template machinery is an advantage.

But don't automate:

“500 nearly identical SEO pages.”

Automate:

“500 instances of genuinely different user problems.”

For example:

_vehicle_ownership_cost_
_appliance_running_cost_
_subscription_cost_
_commute_cost_
_laptop_ownership_cost_

Same engine.

Different user problem.

That's good automation.

Google explicitly says AdSense sites need original, useful content and warns against automatically generated pages with little or no original content. (Google Help)

ONE MORE THING I WOULD DO

Because you are on Blogger, I would not create 20 subdomains initially.

I'd do:

mojoxyz.com

and perhaps:

calculator.mojoxyz.com

only after calculators prove themselves.

Everything else can initially live as experiments.

For example:

mojoxyz.com/tools/rent-vs-buy
mojoxyz.com/tools/ev-vs-petrol
mojoxyz.com/tools/age-calculator
mojoxyz.com/tools/workdays-calculator
mojoxyz.com/tools/html-emoji
mojoxyz.com/tools/random-team

Then:

If 20–30 tools in one family start working:

Promote the family.

mojoxyz.com/tools/...
          ↓
calculator.mojoxyz.com

This saves you from managing dead subdomains.

THE FOUR-SITE EXECUTION PLAN I WOULD GIVE YOU

🦁 ExamLion

Build first:

Question database
PYQ system
Topic practice
Mock tests
Mistake/weakness system

Don't spend huge effort on generic articles.

🌎 PracticeTestLion

Build first:

5–10 high-value international test ecosystems
Topic practice
Full mock
Requirements/eligibility pages
Mistake review
Readiness system

Search for smaller, commercially meaningful certifications/tests rather than immediately attacking giant categories.

💼 JobSalarySky

Build first:

Job × employer × location × experience
Salary comparison
Location comparison
Career progression
Take-home calculator
Job-switch calculator
True-cost-of-career calculator

Don't become merely another salary article farm.

🧪 MojoXYZ

Build first:

Wave 1

True-cost calculators
Comparison tools
Deadline/date tools
Quantity calculators
Student calculators

Wave 2

Text tools
SEO tools
Developer tools
Digital-storage tools
Emoji/HTML

Wave 3

Randomizers
Interactive quizzes
MCQs
Mock tests
Embeddable widgets

And every experiment gets measured.

Finally: what I think you should NOT do

I would not spend the next six months building:

5,000 generic calculators.

I would not spend the next six months writing:

5,000 generic “What is X?” articles.

I would not create:

30 subdomains before any one category proves itself.

I would not build server-heavy software when JavaScript can solve the problem locally.

I would not chase traffic that has no economic value.

And I would not assume the biggest keyword is the best opportunity.

The game you're describing is different:

Find a small problem → build the solution in hours → publish → measure → find the adjacent problem → reuse the engine → discover the cluster → scale only after proof.

That fits your actual constraint extraordinarily well.

And there is one metric I would put at the top of your private spreadsheet:

₹ earned / hour of your work

Not pages.

Not keywords.

Not domains.

Not impressions.

Not even traffic.

Profit per human hour.

Because if one tiny static tool eventually earns ₹10,000/month and requires 20 minutes/month to maintain, while another “successful” site earns ₹50,000/month but consumes 100 hours/month, the first asset may be much more valuable to the business you are actually trying to build.

That is the lens I would use for every idea you give me from now on.