Every year hundreds of thousands of people in Mexico take the admission exam for UNAM or IPN, the two biggest public universities in the country. And almost all of them prepare the same way: a video course, a PDF guide, a question bank, or a prep school that costs 4,000 to 13,000 pesos and moves at the same pace for everyone.

The thing is, the exam **is a competition by number of correct answers**. Spots go from the highest score down, per degree and per campus, and each subject weighs differently. What matters isn't finishing the syllabus, it's **getting the most correct answers per hour you study**.

That's the idea behind **[Quedé](https://quede.app)** (Mexican Spanish for "I got in").

### What is Quedé?

It's a personal coach for the exam. Every day it decides what you should practice to add the most points for _your_ degree and _your_ campus, and it asks you each topic again right before you'd forget it.

* **Diagnostic and score gap:** you know your current score and how many more answers you need for your degree.
* **A daily plan of 15 to 30 minutes:** you open the app and it already knows what's next.
* **Spaced repetition:** it asks you things before you forget them, not after.
* **Official-style mock exams** for the [UNAM exam](https://quede.app/curso-unam) (120 questions) and the [IPN exam](https://quede.app/curso-ipn) (140).
* **An explanation for every option:** not just why the right one is right, but why the one you picked isn't.
* **Xolo,** an [AI tutor](https://quede.app/app/tutor-ia) (a xoloitzcuintle dog) you can ask about anything you didn't get.

### Science, not promises

Most of each session is questions, not videos. There's a lot of evidence that **pulling something out of your memory** works way better than rereading it, even though rereading feels nicer. So Quedé measures what you can answer without help, not what percent of a course you watched.

I'm also not going to promise you'll get in. You earn the spot; what the app does is give you the best plan to get to exam day.

### Free tools

Besides the app, the site has a bunch of free tools anyone can use without an account, like [a score checker for your degree](https://quede.app/herramientas/me-alcanza), a [degree comparison tool](https://quede.app/herramientas/comparador-de-carreras), a [study plan generator](https://quede.app/herramientas/plan-de-estudio), and real data like [UNAM's historical cutoff scores](https://quede.app/datos/aciertos-historicos-unam) and [IPN spots](https://quede.app/datos/lugares-ipn), with sources.

There's also a [weekly summary for parents](https://quede.app/app/para-papas), so they know how things are going without hovering.

### Pricing

It's free forever for the basics: diagnostic, one daily session, review cards and a quick mock exam each week. If you want everything unlimited there's the [season pass](https://quede.app/pase) for 899 pesos, one payment until your exam, or 199 pesos a month.

### Get it

Quedé is at [quede.app](https://quede.app), on the [App Store](https://apps.apple.com/mx/app/id6817941722) and on [Google Play](https://play.google.com/store/apps/details?id=com.vexilo.quede). It's in Spanish, since the exam is too.

If you're taking the exam (or know someone who is), try it and tell me what you think. Any mistake in a question or explanation is super helpful.

Quedé: a study coach for the UNAM and IPN admission exams

I've been a developer for a lot of years, and one task keeps coming back: someone hands you "the client's spreadsheet" and you need it in a database. A while ago I even wrote a [library to import big spreadsheets with Laravel and Node](https://github.com/alfonsobries/xlsx-laravel-spreadsheet-importer) because PHP couldn't handle large files.

If you google "csv to sql" you get a bunch of sites that look like 2012, full of ads, that choke on a 60 MB file and on top of that write wrong SQL: **they drop leading zeros, use types your database doesn't have, and mangle accents**. And the serious tools (DuckDB, pgloader, database clients) expect you to know SQL and fail silently on weird encodings or Excel dates.

So I built **[IntoSQL](https://intosql.com)**.

### What does it do?

You give it a spreadsheet, a CSV, a JSON file or a database dump, and it gives you back **SQL your database accepts on the first try**, plus a report of every change it made. Nothing changes silently.

* **In:** XLSX, XLS, ODS, CSV/TSV, JSON, Parquet, Google Sheets, and MySQL, PostgreSQL and SQLite dumps.
* **Out:** PostgreSQL, MySQL, MariaDB, SQLite, SQL Server and Oracle.

A few examples: [Excel to SQL](https://intosql.com/excel-to-sql), [Excel to PostgreSQL](https://intosql.com/excel-to-postgresql), [CSV to MySQL](https://intosql.com/csv-to-mysql), [JSON to SQL](https://intosql.com/json-to-sql), or a full [database migration](https://intosql.com/database-migration) from one engine to another.

### What it figures out on its own

This is the part that took the most work and the one I'm proudest of:

* **encoding and separator**, even Windows-1252 or `;` with decimal commas,
* **where the data actually is**, even if the header is on row 4, there's a title above it or a totals row at the bottom,
* **what each value means**: leading zeros, "yes/no", "N/A", day-first dates.

And when something can't be converted, it tells you **which row, which column, and how to fix it**.

### Local and free

The conversion runs in your browser with a Rust engine compiled to WebAssembly. Your file **never gets uploaded anywhere**. That's why it can be free, no account, no ads, no file size limit.

### For developers too

Same engine everywhere:

* a [desktop app](https://intosql.com/desktop) for Mac, Windows and Linux that loads straight into your database,
* a CLI (`brew install alfonsobries/intosql/intosql`),
* an API, SDKs and an MCP server so AI agents can use it. It's all on the [developers page](https://intosql.com/developers).

Free is anything you do yourself, by hand, on your machine. Paid is what you repeat or automate (loading straight into a database, scheduled jobs, the API). Details on [pricing](https://intosql.com/pricing).

### Try it

If you've ever had to get a spreadsheet into a database, go to [intosql.com](https://intosql.com), drop your file and let me know how it goes. And if you find a file that breaks it, send it my way, those are my favorite.

IntoSQL: turn Excel, CSV and JSON into SQL that runs the first time

If you've ever been the treasurer of your building, you know how it goes: a spreadsheet only one person understands, a WhatsApp group where everything gets lost, and a folder of receipts nobody checks. And if you manage condos for a living, multiply that by every property you handle.

That's how most condominiums in Mexico are run. And the tools that do exist are expensive, complicated, or feel like they were built fifteen years ago.

So I built **[Kondable](https://kondable.com)**.

### What is Kondable?

It's **[condo management software](https://kondable.com/funciones)** made for Mexico. One app for the property manager and the residents:

* **dues and collections**, with every unit's balance always up to date,
* **expenses and transparency**, so any resident can see where the money goes,
* **bank reconciliation and closed periods**, for when the building gets big,
* **WhatsApp communication**, because that's where residents already are,
* **a mobile app** on iOS and Android, for residents and admins.

### One app, two views

What I like most about Kondable is that **the same app works for a 10-house gated street and for a company managing dozens of buildings**.

There's a simple view with few fields and plain language for the neighbor who got stuck running things. And an advanced view with taxes, withholdings, reconciliation, multiple properties and reports for people who do it professionally. Kind of like Binance's Lite and Pro modes. Nobody should feel like they're on a limited version, or an overwhelming one.

If you manage several buildings there's a page for you: [Kondable for property management companies](https://kondable.com/administradoras).

### Free to start

No demos, no sales calls. You sign up, create your community and you're collecting dues in a few minutes. Small condos (up to 10 units) are free, and the other plans are priced in pesos with no fine print. Details on the [pricing page](https://kondable.com/precios).

I also wrote a lot of public docs, from [creating your community](https://kondable.com/docs/primeros-pasos/crear-tu-comunidad) to [roles and permissions](https://kondable.com/docs/miembros/roles-y-permisos), plus a guide to Mexico's [condominium law](https://kondable.com/ley-de-condominios) that's useful even if you don't use the app.

### Available now

Kondable is on the web at [kondable.com](https://kondable.com), on the [App Store](https://apps.apple.com/mx/app/id6800011205) and on [Google Play](https://play.google.com/store/apps/details?id=com.vexilo.kondable). The app is in Spanish for now, since it's built for Mexico.

If you run a condo (or got picked as treasurer this year), give it a try and tell me what's missing. I'm shipping stuff all the time and I read all the feedback.

Latest Posts

Quedé: a study coach for the UNAM and IPN admission exams

IntoSQL: turn Excel, CSV and JSON into SQL that runs the first time

Kondable: condo management for Mexico without the spreadsheet