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What's up, everyone? Welcome to the Startup Ideas podcast. Today is December 22nd. I'm going to talk about a huge news item. OpenAI quietly launched something not a lot of people are talking about. I'm going to talk about one trend you could take advantage of, build a business around. I'm going to talk about one app that I'm using that, you know, I, I think you should too. I'm going to talk about one startup idea and just give it away to you. And at the end, I'm going to give you a mobile app for framework so you can actually go and build a mobile app in 2026. And that's today's episode. So the news item I want to talk about that I don't think a lot of people are talking about is quietly, OpenAI has launched skills. So we've seen Anthropic and Claude Skills. A lot of people talking about that, including myself, how, how amazing it is. But quietly we have Codex now officially supports Skills. Skills are reusable bundles of instructions, scripts and resources that help codecs complete specific tasks. You can call a skill directly with $sign. Skill name or let Codex choose the right one based on your prompts. So what's really cool is they're just following the agent skills IO standard, the one by Anthropic. A skill is just a folder, basically an MD skill file for instructions and metadata. And all of a sudden your ChatGPT and Codex has just become a lot more valuable. So there's tons of ways that you're going to be able to use agent skills within Codex or ChatGPT. You know, it gives some examples here in the official announcement, some technical stuff because it's talking about Codex specifically, but like a notion spec to implementation skill A. Have codecs read and update your linear tickets skill. Have codecs automatically fix your GitHub CI failures skill. So it does a lot of things and I think a lot of people don't really understand the difference between what is a skill, what is a sub agent and what is an mcp. So just to, you know, give everyone a little bit of a foundation, a skill is like a written guide that tells, you know, Claude or you know, Codex or ChatGPT exactly how to do a specific task, for example, analyze spreadsheets this way or write emails in this voice or design, you know, design the interface like this so you can basically call and reuse the same skill again. And it just, it allows for a more consistent output. So what is a sub agent? Well, a sub agent is Making a few extra copies of the LLM that you're using. Cloud or Codex or ChatGPT, each with its own job, such as you review the code, you write tests, you update docs. The main LLM can hand out pieces of a big task to help these workers. So work happens in parallel and stays organized. And an MCP is just a universal power plug that lets the LLM access other tools. Like we saw that, you know it's going to update your linear tickets. Well, it needs access to that and that's through mcps. So highly encourage. Everyone kind of, you know, plays around with this. You can, you can see over here on Agentskills IO. I'll include it in the show notes. It kind of explains a little more about what, what agent skills are says here. It's an open format, a simple open format for giving agents new capabilities and expertise. Agent skills are folders of instructions, scripts and resources that can discover and use to do more more accurately and efficiently. And who doesn't want that says how you know what an agent skill can enable? Domain expertise. So package specialized knowledge into reusable instructions. From legal review processes to data pipelines. New capabilities where you can give agents, you know, new capabilities like creating presentations or building MCP servers, repeatable workflows, interoperability. So yeah, there's a lot there, there's some example skills that they give as well on GitHub. And I just think that not, not a lot of people are talking about it. So I had to, I had to let you know about it. So that's the one news item that I think you should be paying attention to that could be super valuable for you in 2026 if you have a business that's doing at least $50,000 a month in revenue. I've got something interesting for you. It's called Offline mode. It's a two day event that me and my team are putting on at a 20,000 plus foot square foot mansion. Yes, this is what it looks like on January 23rd and January 24th in Fort Lauderdale, Florida. I'll include a link in the description if you're interested in coming. But it's basically for people who have a business that's kind of cranking, but they really want to put it in rocket ship mode. They want to create a set of businesses that generate tons of money, tons of cash flow, tons of product market fit, tons of impact, but they're not just quite there yet. It's also about making your business AI first. How you can actually build not just one product, but multiple products and you're going to leave with tactical answers to your questions. So if that's you and this sounds interesting, I'll see you there. So that's the news item. The trend that I've been hearing about is something called face yoga. I don't know if you've heard about it but if you go, I'm going to go onto idea browser and just check the trend. Face yoga, I'm sure you've heard of yoga obviously, but people are doing these face yoga techniques to get slimmer faces. There's a lot of opportunity here if you want to create different apps because there are, you know, a ton of opportunities, you know, in yoga, right? There's people making millions of dollars a year with these yoga apps. But face yoga is kind of a sub niche that I think is interesting and is getting a ton of volume. You know, you're seeing, you know, 110,000 searches in August. The average CPC is about a dollar. The competition is low and I just think that you're going to see, yeah, I think there's an opportunity to build products apps around face workouts, facial exercises, face yoga, face lifting yoga exercises, jawline trainer, face slimming exercises. So there's a lot of opportunity here. A trend I never heard of but face yoga Face yoga involves facial exercises, stretches, massage to tone facial muscles, potentially reducing signs of aging like wrinkles and sagging by firming the skin much like body yoga strengthens muscles offering a natural and holistic way to improve facial definition. You can even see here people are creating YouTube videos on it. 10 minute cheek lift, face yoga tone. Right? Like there's an opportunity to build an app that's you know, just some of these exercises and you can charge for it or make it free and do advertising or sponsorship. So face yoga, a trend I have recently heard of that hey might get your creative juices flowing. One app that I wanted to talk about that I've been using literally for 14 years and some of you have heard of this one, it's the things to do list Apple. So it's by a company called Culture Code, not affiliated with them at all. And it's the to do list app. People often ask me like how do I stay focused? How do I, you know, Cause I'm working on multiple companies and a lot of people work, you know, work with me and stuff like that. And I keep everything in to do list and it's just sorry into things not to do list as my to do list. And what I like about it, it has like what I'm focusing on today, what is my upcoming and what is something I want to do someday. And it isn't a monthly fee, it's just like a one time fee. There is some stuff to be desired here. I will say like I could use some AI features and stuff like that but overall if you're looking for like a simple to do list app, I just find this things to be the simplest one there. And I've tried other things, I've tried more intense ones, ones that are on like the GTD framework and sort of more. Yeah like kind of more the kitchen sink type app. But I don't know. I always come back to things, does what I need to do and I recommend it. I recommend it for people who are looking for a simple simple to do list app. Let's give away a startup idea. So the startup idea of today is one that was on the like, you know here, you can check here. Every day for the last 24 days we've been giving away a free startup idea. Here's day 22. I'll include the link in the show notes if you want to. You get these ideas for free, you just got to claim them. So today's idea I really like it says call an expert service for non developers. Stuck at 80%. Done. So how many of us have built a vibe coded app and are like 80% of the way there? We use things like cursor or replit or V0 and then we kind of just give up. So the idea is something called Last20. Last20 is a phone, a friend for builders who are almost there. Upload your code, describe the block, get matched with an expert who's hit that wall before and knows the way around it. 15 minutes on a screen share, that's it, problem solved. Basically a hire a vibe coder, ship it. Maybe you charge $15 to $50 per session or maybe you do a yearly thing for agencies. Maybe it's like 100 to $500 a year. Who can't afford stalled client work? Experts set their rates. So you basically create this marketplace and then you charge a percentage. Maybe it's 5, 10, 15%. So many of us are becoming vibe coders, right? There's literally millions of us. But we're, you know, at the end of it, we're kind of just like, how do I do this one thing? And there's so many, you know, I think this is so true. There's so many YouTube comments of people being like, how do I do this? Agency slack channels asking has anyone shipped this integration for. Okay, so here is the main higher Vibe coder phone, a friend opportunity. And if you look at the search data, it's absolutely beautiful. You know, AI helpers, AI tutors, all this sort of stuff is just going up into the right and I think that's why it's such a huge opportunity. It scored a 9 on 10. The problem is a severe pain. I don't think it's, you know, the feasibility is a 5 on 10. Like it's not that hard to do. And the why now? Nine on ten, Perfect timing. So I think I always check the value letter and idea browser is just get your creative juices flowing around how you can actually go and build this product. So I would start with a lead magnet around an AI project Roadblock guide with the goal just to get people's email addresses, get their phone numbers. Then you do a front end offer, so freemium access to an AI help tool. Then the core offer, expert help sessions, you do like a pay per session access to expert advice. And then eventually you layer on the annual subscription offering priority access and additional features. And then eventually you do the agency thing, right, you do the enterprise package. So I think this is sort of the latter. And you know the key stages here, just like why I like the value ladder. I've talked about this before, but it's basically you give free value to build trust and capture leads. That's the guide. You do the front end offer, which is like a low ticket product to convert leads to buyers. That's that freemium access to an AI help tool. So maybe it's like a Chrome extension that allows users to capture AI project issues and submit them to experts. And I know someone's like, oh, Chrome extension. It's gonna be be so hard to create well with cursor and things like that. It's not out of the realm of possibility to create it. And you can use, you probably can create something pretty lightweight that does this. And yeah, so overall I think this is an interesting idea. I think it would do quite well. And I hope someone takes it, I hope someone does it. And please let me know how it goes and as you build it because I would actually use this. You can even by the way, just do this idea for one product. So repl.it has replit bounties, which is sort of this idea where you can hire someone to help you with replit, but this is basically replit bounties for all the different Vibe coding tools. Cursor, V0, you name it. So you can even just do like V0 bounties.com or just focus on one platform or cursorhelp.com or text a cursor textacursercoder or something like that. Dot com. I do think that last 20 is like a very catchy name. So I do think someone should take that idea. But thinking about doing this on one particular channel first, one particular platform and then eventually expanding this to all the different Vibe coding tools, I think that's the move. We're gonna end this episode with a framework. This is a framework I saw on Instagram by a account called Builder Cult. So it's basically here's the six step playbook to viral validation. So let's just talk about, you know, if you're building an app, how can you get viral validation? So the first step is warm up your account. So you sign up to an Instagram account, you sign up to a TikTok account. Warm, warm it up. Watch videos in your niche every single day of the week. Comment like, share, follow like minded creators. And this prevents shadow bans. So many people just create a brand account and then start posting stuff and it's not really working. Well, it's not really working because the platforms are trying to prevent shadow bans. Step two is to design the idea. So your app must have one visually heavy element. Example pimple popping must be explainable in three words. Track your acne. This is just an example and must solve a fundamental human insecurity. Lose weight, productivity, height, class, this sort of thing, right? So you want to. The apps that do the best are just sort of the simplest apps that you can explain so simply that you know just in a few words that you can very important, have one visually heavy element because that's going to be helpful when you're creating organic content that you hope to go viral. Step three is to build the simplest MVP you can. So do something like literally three screens minimum. Embarrassingly simple. Give yourself two to three days to build it. You can use Roark app, that's a mobile app builder. You can use anything.com that's a mobile app builder. You can use Vibe code app, that's a mobile app builder. But yeah, give yourself a couple of days, iterate on it, show it to friends, show it to people, DM it to people and get their feedback. Step four is post daily until one goes viral. That's the goal. So you're Gonna wanna create one video per day for 30 days minimum or four videos per week. You're gonna wanna test different angles of the same app idea and hopefully one will catch. They say in this one will catch. That's not true. Not necessarily. It will catch in 30 days. It might take you 60, 90, 120, but it's shots on that. But you'll know when one hits because the comments will explode. Step five is to build the community before the product. So you have this wait list, right? So you create a discord. They say telegram. I'm not a huge fan of Telegram. Discord. WhatsApp for the waitlist or an email newsletter for the waitlist. Post updates like building the app. Here's what I'm adding. This keeps early believers engaged while you're building it and you're iterating and converts into day one users and then finally launch the app once it's secure and stuff like that. Finalize features, convert the Roark or anything or Vibe code app into a full fledged product using cloud code. Launch with a hard paywall, something like superwall.com, post content daily, different angles, same value and then hopefully scale from 0 to 10k. Mrr. Purely organic. So that is today's episode. I hope you enjoyed it. I'm trying this new format where I'm giving a news item, a trend, an app, a startup idea, a framework, all the alpha to give you the highest probability of winning because I want to see you win in 2026. If you've gotten to this far, please please like and comment and subscribe. Share this with a friend. Friend, I read every single comment that you write so I will see you in there. And yeah, have a creative day my friends and I'll see you next time.
Podcast: The Startup Ideas Podcast
Host: Greg Isenberg
Date: December 22, 2025
Episode Theme:
Greg Isenberg dives into the under-the-radar launch of OpenAI’s new “Skills” feature for ChatGPT and Codex, breaks down what this means for builders, surfaces an emerging trend ("face yoga"), recommends a productivity app, gives away a detailed startup idea (Last20), and ends with a tactical six-step framework for validating your own mobile app ideas in 2026.
The episode centers around a quietly impactful update by OpenAI: the launch of "Skills"—modular, reusable, instruction bundles for ChatGPT and Codex. Greg explains how these mimic features from Anthropic’s Claude, the difference between skills and agents, and how this opens up new opportunities for founders. He then spotlights a trending niche (face yoga), recommends a longtime productivity tool, gifts a startup idea to listeners, and provides a practical framework to go from spark to viral traction.
[00:00–08:14]
"All of a sudden your ChatGPT and Codex has just become a lot more valuable." – Greg [01:36]
[13:14–16:40]
"There's an opportunity to build products, apps around face workouts, facial exercises, face yoga ... a trend I recently heard of that, hey, might get your creative juices flowing." – Greg [15:41]
[16:40–18:53]
"I always come back to Things… I recommend it for people who are looking for a simple to do list app." – Greg [18:29]
[18:53–26:22]
"So many of us are becoming vibe coders... at the end of it, we're kind of just like, how do I do this one thing?" – Greg [22:15]
"Last20 is a very catchy name... You can even do this idea for just one product first. Focus on one channel, then expand." – Greg [25:12]
[26:22–end]
"The apps that do the best are just sort of the simplest apps... explain so simply in a few words." – Greg [28:09] "Give yourself a couple of days, iterate on it, show it to friends, show it to people, DM it to people and get their feedback." – Greg [28:50]
"All of a sudden your ChatGPT and Codex has just become a lot more valuable." – Greg [01:36]
"There's an opportunity to build products, apps around face workouts, facial exercises, face yoga... might get your creative juices flowing." – Greg [15:41]
"I always come back to Things… I recommend it for people who are looking for a simple to do list app." – Greg [18:29]
"So many of us are becoming vibe coders... at the end of it, we're kind of just like, how do I do this one thing?" – Greg [22:15]
"You give free value to build trust and capture leads... and then you do the front end offer, which is like a low ticket product to convert leads to buyers." – Greg [24:42]
"Give yourself a couple of days, iterate on it, show it to friends, show it to people, DM it to people and get their feedback." – Greg [28:50]
Energetic, accessible, and idea-forward—Greg’s delivery is practical and enthusiastic, aiming to inform and empower listeners to spot and capitalize on overlooked opportunities in AI and app development for 2026.
For further resources and 30+ more startup ideas, see:
https://gregisenberg.com/30startupideas