Good app ideas are easy to find. What most lists leave out is how big each one is to build. If you want something finished this weekend, make a habit tracker or an expense tracker. If you want a real product with accounts and a database, a booking and scheduling app is the classic first MVP. If you want a business with money moving between strangers, a two-sided marketplace is worth it, but it's a full product, not a weekend. Below are 16 apps to make, sorted into those three tiers by what they actually need, with a link to a full Greta.sh build guide for 15 of them.
Every "apps to make" list we read gives you the idea and stops. The idea is the cheap part. The expensive part is whatever the idea quietly needs: logins, a real database, payments, several kinds of users, live updates. Two apps that sound equally simple can be a weekend apart or a quarter apart.
How we evaluated
Each idea is placed in one of three tiers by what its first useful version needs, not by how novel it sounds:
- Weekend build: one core feature, a small data model, one kind of user or none, no payments.
- Real MVP: user accounts, a proper database with related records, several connected features, and at most one hard piece such as payments or live updates.
- Full product: two or more hard pieces at once, like payments plus several user types that deal with each other, data isolation between customer organizations, or legal and compliance obligations.
We scored the list in October 2026. The tiers describe the first version worth showing to real users, not a polished launch.
At a glance
| # | Idea | Category | Tier | What makes it that size | Full guide |
|---|---|---|---|---|---|
| 1 | Launch waitlist page | Marketing | Weekend build | One form, one table | Not yet (covered here) |
| 2 | Portfolio site | Personal | Weekend build | Mostly content, a contact form | Yes |
| 3 | Habit tracker | Productivity | Weekend build | One user, one simple data model | Yes |
| 4 | Expense tracker | Finance | Weekend build | One user, categories and totals | Yes |
| 5 | Booking and scheduling app | Business | Real MVP | Availability rules, two sides of a booking | Yes |
| 6 | Task tracker | Productivity | Real MVP | Accounts, shared projects, assignments | Yes |
| 7 | Fitness coaching app | Health | Real MVP | Coach and client roles, plans and check-ins | Yes |
| 8 | Online course platform | Education | Real MVP | Accounts, lessons, progress, likely payments | Yes |
| 9 | Real-time voting app | Community | Real MVP | Live results, one vote per person | Yes |
| 10 | Notion-style workspace | Productivity | Real MVP | Nested pages, rich content, sharing | Yes |
| 11 | Podcast hosting platform | Media | Full product | Large file storage, RSS feeds, paid subscriptions | Yes |
| 12 | Two-sided marketplace | Business | Full product | Buyers, sellers, payments, trust | Yes |
| 13 | Customer support portal | Business | Full product | Customers, agents, admins, ticket history | Yes |
| 14 | LinkedIn-style social network | Social | Full product | Profiles, connections, feeds, moderation | Yes |
| 15 | Multi-tenant SaaS app | Software | Full product | Isolated data per customer organization, billing | Yes |
| 16 | Donation and fundraising platform | Nonprofit | Full product | Payments, receipts, donor records, legal rules | Yes |
Weekend builds: simple app ideas you can finish
These are the simple app ideas: one person can describe them in a paragraph, and an AI app builder can get a working version up quickly because there's little hidden underneath.
1. Launch waitlist page – weekend build
A one-page site for a product that doesn't exist yet: what it is, who it's for, and a signup form that stores emails in a table you can export. It's the most useful thing on this list because it tests demand before you build anything else. Add a referral count per signup if you want a second feature, and stop there.
2. Portfolio site – weekend build
Your work, a short bio and a contact form, on your own domain. The data model is barely a data model: projects with a title, images and a description. Our guide to building a portfolio site with Greta.sh in 15 minutes walks through it.
3. Habit tracker – weekend build
Habits, a daily check-off and a streak count. It needs one user and one small table, which is why it's the usual first app. The full walkthrough is in build a habit tracker app from a single prompt.
4. Expense tracker – weekend build
Log an expense, pick a category, see totals by month. It stays a weekend build as long as it's personal; the moment you add shared household budgets or bank syncing, it moves up a tier. See build an expense tracker with AI.
Got an idea? Build it now!
Just start with a simple prompt. No coding required: Greta.sh turns your idea into a working app in minutes.
Real MVPs: AI app ideas with a real backend
This is where most good app ideas land. Each needs accounts, a database with records that relate to each other, and a few features that depend on one another. These are also the best AI app ideas for a first serious project: big enough to be a product, small enough to finish.
5. Booking and scheduling app – real MVP
Customers pick a slot, the owner sees the calendar, both get a confirmation. The hard part is availability rules: working hours, buffers between appointments, cancellations. Our guide to building a booking and scheduling app with AI covers the data model.
6. Task tracker – real MVP
Projects, tasks, assignees and due dates, shared across a team. The single-user version is a weekend build; sharing and permissions make it an MVP. See build a task tracker with AI.
7. Fitness coaching app – real MVP
Two roles: a coach who writes plans and clients who log workouts and check in. Two roles that see different screens is the step up from a weekend build. The walkthrough is in build a fitness coaching app with AI.
8. Online course platform – real MVP
Lessons, enrollments and progress tracking. If you sell the course inside the app, payments are its one hard piece. Build an online course platform with AI covers the structure.
9. Real-time voting app – real MVP
Polls where results update as votes arrive, with one vote per person. Live updates are the hard piece; everything else is simple. See build a real-time voting app with Greta.sh.
10. Notion-style workspace – real MVP
Nested pages, rich text blocks and sharing. It stays an MVP if one person edits a page at a time; simultaneous editing by several people is a much bigger job. The guide is build a Notion-style workspace using AI.
Full products: top app ideas that are really businesses
These are the top app ideas people pick when they want a company rather than a tool. Each stacks two or more hard pieces, and each is worth planning carefully before the first prompt.
11. Podcast hosting platform – full product
Uploading and storing large audio files, generating RSS feeds that podcast apps accept, and usually paid subscriptions on top. The walkthrough is in build a podcast hosting platform with AI.
12. Two-sided marketplace – full product
Buyers, sellers, listings, payments between them, and the trust features that make strangers willing to transact: reviews, disputes, payouts. Build a two-sided marketplace with Greta.sh goes through it.
13. Customer support portal – full product
Customers open tickets, agents answer them, admins see the queue and the history. Three roles with different permissions over the same records is what makes it big. See build a customer support portal with Greta.sh.
14. LinkedIn-style social network – full product
Profiles, connections, a feed and messaging, plus moderation the moment real people post. Build a LinkedIn-style social network with Greta.sh covers the pieces.
15. Multi-tenant SaaS app – full product
One app serving many customer organizations, each of which must only ever see its own data, usually with subscription billing per organization. Getting that isolation right is the whole job. The guide is build a multi-tenant SaaS app with a native backend.
16. Donation and fundraising platform – full product
Campaign pages, payments, donor records and receipts. The legal side is what pushes it into this tier: rules on charitable solicitation and donation receipts depend on where you and your donors are, so check them with an adviser before taking money. See build a donation and fundraising platform with AI.
How much of this is actually a weekend project?
Four of the sixteen. That's the honest answer, and it's the answer most idea lists avoid, because a list of fifty buildable ideas reads better than four you can finish by Sunday and twelve that need real planning.
Cost framing on vendor lists has the same problem. Adalo's own app ideas list compares its starting price of $36 a month (billed annually; $45 billed monthly) with the $10,000 to $50,000 it says outsourcing a small app typically costs. Both numbers may well be right. The comparison still skips the variable that decides your real cost and time, which is the tier your idea sits in. A weekend build is cheap on any tool. A full product is expensive on every tool, in time if not in money.
It's a common letdown: the idea that looked like a weekend on a listicle turns out to need logins, two kinds of users and a payment flow. That doesn't make it a bad idea. It means the first version should be smaller. Build the weekend-tier slice of it first (the waitlist, the single-user version, the read-only directory) and let real users tell you which hard piece to add next.
When you've picked an idea, run it through our pre-build checklist before you prompt anything; it will tell you which tier you're really in. The New Economics of Software covers why building a small app now costs so little, and where the cost still lives.
Greta.sh is an AI app builder: you describe the app in plain language and it builds a working web app you can deploy. The free plan gives you 5 credits a day, enough to try a weekend-tier idea. Starter, which adds deployment and a custom domain, is $5 a month on the welcome offer (normally $20). Pro, which adds the Database feature and team management, is $20 a month on its welcome offer (normally $50).
Got an idea? Build it now!
Just start with a simple prompt. No coding required: Greta.sh turns your idea into a working app in minutes.
How to choose
Three questions decide it.
How much time do you have? A weekend points to the first four ideas. A few weeks of evenings points to the real MVPs. A full product is a project you plan in phases.
How comfortable are you reading what the builder produced? You don't need to write code for any of these, but the full-product tier asks you to test permissions and payments carefully, and that goes faster if you can follow what's happening underneath.
How much backend does the idea need? This is the question the other lists skip. Count the hard pieces: accounts, related data, payments, several user types, live updates, legal rules. Zero or one is a weekend or an MVP; two or more is a full product. That count is a better guide than any "top app ideas" ranking, including this one. When you're ready to build, Greta.sh pricing is the next step.
FAQ
What are some good apps to make? Good apps to make depend on your time. For a weekend, a launch waitlist page, a portfolio site, a habit tracker or an expense tracker. For a real MVP, a booking and scheduling app, a task tracker or a fitness coaching app. For a full product, a two-sided marketplace or a multi-tenant SaaS app.
What's the easiest app to build first? A habit tracker or a launch waitlist page. Each has one core feature, one small data model and no payments, so the first working version is realistic in a weekend with an AI app builder.
How long does it actually take to build an app from one of these ideas? It depends on the tier more than the tool. Weekend builds are what the name says. Real MVPs and full products take longer, and our guide on how long it takes to build an app breaks the ranges down by build method.
What are good AI app ideas specifically? Apps where the first version is mostly data and screens: booking tools, task trackers, coaching apps and course platforms. Those are the AI app ideas that suit a prompt-based builder like Greta.sh, because the hard parts are describable. Anything built on payments between strangers or strict compliance needs more careful review, whichever tool you use.
Last updated: October 5, 2026.
