The Smart Startup's Guide To Estimating Market Size For An App

The Smart Startup’s Guide To Estimating Market Size For An App

What’s the next step after coming up with a unique, exciting app idea?

Estimating market size is crucial for gauging if there is sufficient demand for your product to succeed.

This is where startups need to go away and do some preliminary research into whether their inspired idea is actually profitable.

It’s a step before idea validation, which is where you are actually gaining feedback from your target market that they want the app you are building.

Why estimating market size is tricky for tech startups

Technology is inherently revolutionary, so when introducing a new app to a market you might not have any direct competitors.

That is, there may not appear to be an existing market for your app.

Often the most successful apps have created the market as we know it.

Uber, Airbnb and Apple’s smartphone are all examples of totally first-of-their-kind ideas which would not have gone ahead had they focused too heavily on current market size in their validation process.

Faster horses and all that…(click here if you don’t know what I’m talking about).

Eventual market size > Current market size

It’s fantastic if there is an existing market for your product.

That makes proving your idea’s potential a lot easier, especially as you search for funding and investors.

However, the key to wooing investors isn’t current market size, it’s eventual market size.

Bonus: The Secret To Raising Venture Capital Investment

Your idea will not make an impact if it isn’t in a growing market – one that will churn out increasing amounts of revenue over the next 1-50 years at least.

That’s the key word here: Growth.

It’s OK if your market isn’t currently worth $1,000,000, 000 – You just need to make sure it isn’t shrinking.

Alright, glad we got that sorted.

Now I’m going to give you a set of steps to follow for estimating current and future market size for your app idea.

Step 1. Be critical of your idea

Never build a startup that solves a”nice to have fixed” problem. People will use your product but never pay for it.” – Mitchell Harper, Founder of Capital H Labs

Does your idea actually have profit potential?

Does it solve a problem that people frequently complain about (on a day to day basis, ideally?)

Think about some of the apps that you couldn’t live without. What makes them so irreplaceable?

The number 1 app that I couldn’t imagine life without right now is Audible.

I can now devour a book in a week just listening to Audible while I’m walking to and from work or doing mundane tasks that don’t require concentration.

I can’t imagine going back to wasting those 2-3 hours a day!

So, take a step back from your idea and be as objective as possible. Ask friends and family (and strangers) if they would pay for your product.

Step 2. Use Google Trends

google trends logo

Google Trends will show you if search volume relating to your idea’s keywords are increasing or decreasing.

Although not terribly scientific, this is good preliminary research to start sussing out if your target market is on an upward trend.

You can see below how a quick search on Google Trends for the keyword ‘dating apps’ shows this is something that people are searching for more and more.

search volume for keyword 'dating apps' increasing year on year

Searches relating to Not so much. compared to Dating apps search volume

In fact, it’s flat lining as apps like Tinder have taken market share.

Note: Don’t take Google as gospel.

The one biggest caveat with Google Trends is that if your idea is designed to disrupt a stagnant industry, search volume for that industry is going to be pretty bleak!

Take Uber, which totally transformed the taxi industry.

The taxi industry was an absolute dinosaur, with processes that had changed little in the last 20 years!

The reason this industry was one of the last to be disrupted by technology was because technology wasn’t fully developed enough to improve the industry the way it needed to be improved.

It’s only in the last 5-8 years that apps have much improved functionality and levels of user adoption.

This gave Uber the ammunition it needed to develop a platform that would allow it to create a market for on-demand taxis.

In that case, eventual market size was much bigger than current. Although it would have been hard to prove that with Google Trends!

Step 3. Dig deeper

google trends dig deeper

Hopefully Google Trends has established that either your industry and/or your customer pain point is one that is seeing a high amount of search traffic.

The next step is to find useful insights on the keyword you entered.

Google Trends breaks down search volume by location and related searches, as you can see from the interactive ‘dating apps’ example below.

You can also see the change in interest by region over time using an interactive scroll bar.

Yep, Google Trends is pretty fun.

Step 4. Facebook Ads

facebook ads for idea validation

Facebook ads will show you estimated reach for your idea (assuming your target market is on Facebook, of course, but I don’t know anyone who uses apps who isn’t…)

Facebook’s ad tool is great because you can go really granular into your target market’s demographics, interests and behaviours.

For example, you may have an app idea for a target market you see as being male, 20-40 years old and interesting in skiing.

You can input this information into Facebook’s ad campaign tool or post boosting tool like I have below.


Estimated facebook reach for a skiing app idea

Facebook requires you to set a budget first, but just put in a dummy variable and concentrate on the number I’ve outlined in red – that’s the total estimated people in your market according to Facebook’s data.

Now, I’d personally be shooting for no less than 1,000,000 potential customers.

If your estimated market size is smaller than you were hoping for, it’s a sign that you should consider diversifying your product offering or positioning.

What if your app was targeted at men and women interested in skiing? Or men interested in not just skiing, but all snow sports including snowboarding and sledding?

A word on piggybacking:

You can also piggyback off existing brands to get an idea of how big your market is.

This is an especially useful tactic if your app is a complementary product or service, or if your target market is currently using an alternate brand to solve the problem that your app will solve.

Paypal originally piggybacked on eBay during their market analysis, and Airbnb piggybacked on Craigslist property listings.

The difference with their offerings is they looked at a market that was already prospering, and assessed where it could be made more niche (taking the same concept and applying it to an alternative market).

Step 5. Scour for government data and market research reports

These resources can show you hard figures on how your market is performing, which companies have market share and what opportunities and threats are suspected to have an impact in the next 5-10 years.

Australian Bureau of Statistics and census data is also invaluable for checking demographic statistics on your target market.

What % of the population is made up of people in your identified demographics, and how is that % expected to change in the upcoming years?

Some top resources to check out:

  • Euromonitor Australia
  • Passport
  • Mintel
  • Australian Bureau of Statistics website (ABS)
  • Census Data
  • Australian government websites

Some of these reports will cost a lot of money to download, but my top tip is to hit up any uni students you know!

Most of the big universities give their students free access to these reports for research purposes (they can access them just with their uni login details).

Step 6. Estimate customer value

Once you’ve established that your idea is profitable and there is a decent pool of customers who might be interested in paying for it (we’ll get to that later), the next step is to assess how much a customer is actually worth.

In app development, this is commonly referred to as Customer Lifetime Value (CLTV) and the goal is to continually increase it through engaging, fresh app content and fantastic customer service.

Thinking about your CLTV early can save wasted resources in the long run.

For example, if you build a premium product and you find out halfway through the development process that your target market is incredibly price sensitive, you’ve wasted time and money going back and re-positioning your app as a lower-end product.

How can you monetise the value of a customer?

The simplest way to do this is to figure out how much your customer is currently spending on the alternative solution to their problem.

This will manifest itself in different ways depending on your industry, target market and the problem itself.

If we were to take the Uber example again, they would have looked at the average $ amount spent by the average person per year on taxis in San Francisco (their launch city).

Admittedly, you probably can’t bet on 100% market penetration (owning every customer in your target market is a long term dream!) but at this early ideation stage, your idea might well diversify to serve different customer segments and locations.

This will boost your Total Available Market yet again.

Bonus: Validate your idea

Those last 6 steps were all about estimating market size, which is essentially a set of steps to help you make an educated assumption about your idea’s potential.

Now you know that there is a market for your app, but you don’t know if people in that market will actually be interested in using your app.

This is where idea validation comes in. We’ve made a detailed video about how to validate your idea, so make sure you check it out for further clarification.

Some fast takeaways:

  1. Build a landing page and collect emails from interested people.

You should also set up a free Google Analytics account to track the essential stats on your page – Where visitors are coming from, how much traffic you are getting over different time periods, etc.

2. Run an ad campaign through a network like Google Adwords.

Use keywords for competitors offering similar services to yours, and see how many hits you get.

3. Run a competitive analysis.

Competitors making a profit usually signify that there is a market for your app!

Run a competitive analysis to assess the likelihood that your app will be able to compete with the ones you’ve identified. How are you going to take market share off them?

The goal is to demonstrate hard proof that your idea has traction and profit potential. Investors love these stats as well.

WOW factor will get you through the door, but Australian investors are risk averse and are particularly interested in growth rate and cash flow.

Bonus: Template: 3-5 Year Financial Planning For App Startups

Well there you have it! These are the 6 steps to making the most accurate estimate of your market size you possibly can.

Let me know in the comments if you were surprised by your idea’s market size! Was it bigger or smaller than you expected?

You just read Part 1 of the Buzinga crash course How To Build An App: Moving Forward With Your App Idea

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Logan Merrick is the co-founder and Director of Buzinga, as well as one of Australia's most recognised entrepreneurs, keynote speakers, investors and mentors. His writing on startups, technology and mobile marketing has been featured in The Australian, Business Insider, Startup Smart, Smart Company, and more.
  • Jenny

    Wow. Thank you from South Korea!
    I am launching a diary application and it was really helpful to estimate the market size.
    There were no ways to research the market for diary app, so I was asking for help to the research report team.
    It might have cost more than $1,000. This post helped me to save that money.
    Thank you so much!

  • Hernan

    Easy and simple to understand. In app development simplification is paramount and you’ve used this principle for app development guidance. well done. The market size for my app was much bigger than initially expected ;)

  • Kiyani B

    Excuse me Logan but your blog is one of the most epic, well written, well documented, agreeable to read, updated and useful I ever came accros in this messy/awesome tech community !
    I am currently working on an app idea, and in the same time creating a tools box for my startup club ( at Polytechnique Montreal, a engineering school in the french part of canada), and I can’t wait to show to our members your articles, your blog will be so helpful to them.

    Please keep the good work, as you said if you are not learning you are loosing ; and I have a lot to learn right here !

    PS : I tried to get in touch with your team, but since I am not in Australia it is not possible. Don’t you offer any consultation outside of your country ?

    • Logan Merrick

      Hi Kiyani,
      Apologies for the delayed reply. Thanks for the awesome feedback! We only work with very select clients outside of Australia, but if you shoot me an email at I’m happy to see if we’re a good fit or give you some quick feedback.

  • Lynn

    I’m not sure if I missed something, but Google Trends does not actually tell us the search volume of each term. Would you say Facebook Ads is already the one good enough tool for that purpose?

    Love this series. I will be sure to keep coming back to your site. :)

    • Logan Merrick

      Hi Lynn,
      If Google Trends isn’t telling you search volume for a certain term (as it is in the ‘dating apps’ example above), it’s likely that Google doesn’t have enough search data for that term as it is too niche.
      Facebook Ads are very sophisticated though, you should be able to gather a good understanding just using this tool :)
      Thanks for the feedback on the series, glad it’s been useful!

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