I found a list of startup ideas I wrote in 2019 when I was choosing the idea for palabra.
there are a lot of ideas here that I find fun (some already exist) but my sense is that back then I wouldn't have known how to validate the business model for these startups, and today maybe I would.
I'd like to do the exercise of thinking through how I'd validate PMF for each one.
Webapp to let people rent a desk on a house to use as a co-working space
this one is complex because it's a marketplace, and the hard part of a marketplace is that it has two sides and you have to take care of both: build supply and build demand.
the first thing I'd do is validate the supply side. are there people willing to rent out their desks? is there any regulation around this (I imagine not)? but I'd validate that it's something legally allowed (or at least that it's not banned).
I'm also curious about pricing. on the demand side, how much would someone be willing to pay? I'd validate this against the cost of a traditional co-working and see if it makes sense (does it end up costing the same, or more?).
assuming none of those points raise a red flag, my first goal would be to land a single booking. for that I'd need at least one person willing to rent out a nicely set-up space. I'd take very good photos of it. I'd build a simple site (something I can put together with cursor/composer in 1-2 hours) that mimics a marketplace but where the only desk available is that one. I'd run ads on IG (probably reels) and measure conversions to the site and booking requests. my goal would be 1 booking.
if a booking happens, I could say the demand side is validated. I assume the next steps would be analyzing the competition and pricing in more detail. I don't have a clear sense of the economics of an Airbnb-style model but I'd dig into it and try to draft a first cost/revenue estimate to understand which pricing makes sense and which doesn't, and especially how much I can afford to spend on marketing.
if all of that goes well, I'd keep building supply and pushing harder on demand with reels ads.
App that lets people upload a short podcast on any topic
I find this one interesting because it's something I'd want to exist, but I'm not sure how I'd start. I like the idea because it's a TikTok for audio. I wonder if there's a minimal version of this, or something people already do that resembles it. for example: I think I could start by grabbing good podcast episodes, cutting them down, and keeping just 1 or 2 minutes of the best content. I'd want to avoid having to build an app to validate it because there's some unavoidable dev time (though much less than there used to be).
I'd rather focus on the quality of the content. I wonder if I could validate it by sending these short podcasts as audio messages on whatsapp and measuring the reactions of people I know.
another option could be, instead of building a mobile app, to build a simple site that works really well on mobile with an interaction similar to tiktok (scroll up and down to go to the previous/next one).
if I built that site I could focus on distribution. selling b2c is something I find a bit elusive but I have some intuitions: 1) I'd lean on the distribution of another platform (like tiktok and twitter). I'd share the content there to drive traffic to the app. 2) I'd remove barriers to entry (you can listen and share without signing up). 3) from day zero I'd build sharing mechanisms (you can share clips as whatsapp audios; at the end of every audio, a line saying you can hear more of these mini podcasts at "www.something").
the success metric here would be visits to the site and number of shares. I'd also measure whether people come back.
there's something about this idea I haven't unlocked yet: why someone would actually use it. is it entertainment? a replacement for tiktok? it kind of sounds like one of those ideas that sound good but that we wouldn't actually use.
app to pay someone to teach you something
this is one of the easy ones. marketplace again. the concept is "I want to learn X, who'll teach me." I'd post hundreds of requests like this (here you can fake the supply side) and validate whether there are people willing to bid an amount of money to teach it. I'd run social media ads again, or use twitter or twitter ads. success would be people bidding.
after that I'd validate the supply side. if the previous step worked, I should have user flow in the app. from day zero I'd include the option to post requests. the success metric that would make me commit more time to this idea would be 1 request from a real person matched with 1 offer from a real person.
I'd do the same as in the first idea to validate competition, pricing, etc. for anything that involves coding I'd take shortcuts. I wouldn't implement login, payments, etc. until the model is well validated. I'd handle everything with forms and manually until that happens.
this feels like one of those low-substance ideas that I don't think could grow into something big. but I could be wrong.
mobile app for motivation for female entrepreneurs
I get why past-karen had this idea, but I think this is more of a community than a business.
app to keep track of someone else's tasks
I think I had an interesting insight when I came up with this idea but today I'd say the solution is Linear.
display list of new features of a release to integrate into a site
I like this one. there are already some solutions out there. it's a small product and would be a good idea for a bootstrapped app. I think it's one of those apps that used to be huge efforts but today are easy to build. the mvp would be a form where you upload a list of features and bug fixes, plus a <script> tag you can copy/paste into an app to render the list (in a dropdown, in a notification, or as a plain list). building this mvp shouldn't take more than a week.
thinking about distribution, my first instinct is SEO. this is b2b after all and the target user is probably a tech lead or a PM who wants to show this in their app. before starting, I'd probably take a step back and talk to those people. I know some companies use apps like these to show their changelog but I don't have clarity on what stage they're at when they start needing it, or if they share anything in common. for example: do b2c companies tend more to want to show feature lists? is there some b2b industry that values dev velocity more and wants to show this off? is there something broken about the current process of sharing a changelog?
I can imagine (because I live it every day) that the changelog is something that takes work to put together. could it be simplified somehow? for example, taking the list of recent commits, parsing them with AI, and generating the changelog from that?
I also don't have clarity on who'd buy this product. I think it's a TL or a PM but I'm not sure. what's the incentive to want a changelog? what problem does that person have that a changelog solves? visibility with customers or with the internal team? pressuring the team to ship more often?
I wouldn't write any code until this is clear, because the solution can look very different depending on the answer.
another angle to investigate would be reviewing the current competition. tools like this already exist and they must solve a clear pain. it's probably stated on their landing page. what is it? does validating it with a PM or TL confirm it's a pain for them?
tool to integrate notifications to sites
this idea could go in many directions. what kind of notifications? in apps or on websites? I'm not going to explore it because I don't have clarity on what past-karen meant.
tool to allow anyone to create an online course
I'm not going to explore it because it's a bad idea. thousands of these were born in 2020, they all died, and now we have LLMs.
job board for education
I'm not sure what this idea is about.
app that lets entrepreneurs manage their finances when they are just getting started
I like this idea, and I'll say why: it's specific. I think there's a bigger idea behind it (is it finance for entrepreneurs in general? is it a simple finance app that starts with entrepreneurs and then expands to other audiences?).
I'd start by listing specific problems that entrepreneurs have with their finances, and I think there are many sub-niches to focus on. for example, Latam entrepreneurs in the US on a work visa. that group has very specific pains. another is the Argentine entrepreneur whose entire economy is in the US but who lives and pays taxes in Argentina.
I'd pick one of these sub-niches and dig in until I understood their biggest pain. what's the thing they absolutely have to do (by law, for example) but can't. I'd do hundreds of interviews and pay attention to what comes up repeatedly. is there something everyone already solves somehow today, but where no good solution exists? for example: 5 different people mention they solve X in 5 different ways (with a spreadsheet, with an outsourced person, with an app). I'd look for problems where these people have already cobbled together a solution, but where that solution is insufficient. I'd avoid the "wishes" and bullshit people throw into the air, where if you ask "okay, and how do you solve it today?", the answer is that they don't do anything. that's not a pain. be careful with those.
if I find one thing everyone has in common by my 6th call, I'd listen, and then I'd offer that solution to the person. I'd say the pricing is X (even without having the product yet). I'd see if they're willing to pay. the only form of validation is money in the bank. there's no such thing as "really interesting, let me know when you have it; really cool, ping me later." if it's interesting, if it's a pain, you pay for a solution.
if that happens, I'd build a small, beautiful product that only solves this problem and solves it really well.
app that lets entrepreneurs see their conversion funnel and optimize it
I'm not going to explore this idea because I built a company out of it (this was Palabra). even though today I'd probably know how to validate it, the exercise of thinking it through again bores me.
a youtube for action cameras
I was living in thailand when I wrote this list. honestly, I think it's a terrible idea.
tool that let react native developers work on iOS and Android at the same time
there's a huge technical challenge here that, if cracked, unlocks a massive business. unfortunately I think in this case, before thinking about distribution, you have to think about what a solution would even look like. you have to explore the technology.
you also have to question the statement and go back to the problem. I think the problem is that RN apps look very different on the two devices. maybe that's the part that can be solved, and that solves the underlying problem.
email marketing tool for early stage startups
palabra was also this. in fact, this was the idea that started it all! good solutions exist for this today. again, exploring things I already thought about for years bores me.