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.

Kondable: condo management for Mexico without the spreadsheet

A couple of years ago I heard Dr. Chris Palmer on a podcast talking about the relationship between diet and mental health. It was so interesting that I bought his book *Brain Energy*. The thesis is fascinating: **the ketogenic diet can have a direct impact on your brain, your energy, and your mood**. Not just for losing weight — for functioning better.

I decided to try it. And what happened surprised me.

Within a few weeks I noticed changes I wasn't expecting:

* **the depression went away** — not gradually, it just stopped being there,
* my gums stopped bleeding (something I'd dealt with for years),
* unlimited energy throughout the day,
* better performance in sports,
* better sleep,
* better mood overall,
* the clearest head I've ever had.

I'm not a doctor and I'm not going to tell you keto is for everyone. But for me it was a before and after. And when something changes your life like that, you want to keep doing it right.

### The problem: tracking on keto is a pain

That's where the frustration started. Every tracking app follows the same formula: **search through an infinite database, pick the exact brand, guess the portion size, repeat for every ingredient**. A simple lunch could take five minutes to log. Five minutes that nobody has.

I talked to several people who also do keto and the complaint was always the same:

* "I stopped tracking because it took too long,"
* "I just eyeball everything now,"
* "the apps feel like they were made for bodybuilders, not for me."

### ChatGPT showed me the way

One day I was tracking what I ate and it occurred to me to ask ChatGPT: "I had two eggs with avocado and coffee with butter, what are the macros?" It gave me the answer in seconds. No database searching, no filling out forms, no selecting brands.

**It was ridiculously easy.**

I started doing it every day. The problem is that ChatGPT doesn't save your information. It doesn't track your progress. It doesn't tell you how many net carbs you've had today. Every conversation starts from zero.

And that's when I thought: **what if I could have the best of both worlds?** The ease of talking to an AI like it's a person, but with the real tracking of an app that saves everything, shows your progress, and keeps you in control.

### That's how KetoLuna was born

I built the app around that idea. Logging a meal should take **five seconds, not five minutes**. You have three ways to do it:

* **Take a photo** — snap your plate, the AI identifies the food, estimates portions, and calculates your macros. Done.
* **Type it naturally** — write "coffee with almond milk and two scrambled eggs" and it just works. No databases.
* **Use your voice** — tap the mic and say what you had. Same result.

The AI breaks everything down, shows you the macros, and you hit save. That's it.

**Website:** [ketoluna.vercel.app](https://ketoluna.vercel.app)

### Designed for keto from day one

Most tracking apps treat keto as an afterthought. KetoLuna was designed around it:

* **Net carbs are always front and center** — not buried in a submenu.
* **The progress ring shows your remaining carbs** — one glance and you know where you stand.
* **Quick chips** let you re-log your frequent meals with a single tap — because let's be honest, we all eat the same breakfast most days.

Beyond food, you can also track weight, blood sugar, and activities — all in the same feed, the same clean interface.

### Why I built it for women

When I started researching the keto app market, I found **thousands of options**. Literally. Competing head-on against MyFitnessPal or Carb Manager is nearly impossible — they've been around for years, have millions of users, and massive budgets.

But I noticed something: **almost no app was designed with women in mind**. Most of them feel aggressive, clinical, made for the gym bro counting every gram of protein. And there's a huge community of women doing keto who don't feel represented by those apps.

So I decided to focus KetoLuna on that niche. The design is warm, with earth tones, no intimidating charts. The experience feels friendly, not like a chore. Because **an app you actually enjoy opening is an app you'll keep using**. And in keto, consistency is everything.

### Available now

KetoLuna is on the [App Store](https://apps.apple.com/app/ketoluna-ai-keto-for-women/id6760356378) and [Google Play](https://play.google.com/store/apps/details?id=com.vexilo.ketoluna). It's free during the beta — no credit card, no trial period, no catch.

I'm actively working on it and shipping updates constantly. My goal is to make it **the best keto tracking experience out there**, and I genuinely mean that.

If you're doing keto (or thinking about starting), I'd love for you to try it and tell me what you think. Any feedback helps — I read everything.

KetoLuna: AI-powered keto tracking that doesn't waste your time

A few months ago, during a race here in Mexico City, I ran into the same problem as always: **I know photographers took pictures of me, but afterwards I have no idea where to find them**.  
One photographer gave me a card, another told me to look them up on Instagram, another had a weird URL… and of course I forgot everything a couple days later.

I talked with several runners and everyone said basically the same:  
- “I follow some photographers, sometimes I show up there,”  
- “if a friend sees my photo, they send it to me,”  
- “I search through hashtags but it takes forever.”

And I thought: **this should really be solved by now**.

### Looking for solutions (spoiler: didn’t find one I liked)

I started checking what platforms photographers use. Many use things like LumePic or PhotoHawk.  
Honestly, I went in looking for some *alternative to LumePic* or an *alternative to PhotoHawk* that felt more modern… but nothing really convinced me.

They felt **hard to use**, kind of outdated, slow, and not really taking advantage of modern tools like proper facial recognition or smart filters. They work, but it feels like visiting a website frozen in 2014.

### So… I ended up building it myself

And that’s how ZebraSnap was born.

### What is ZebraSnap?

It’s a platform where photographers upload photos from sports events, and runners can easily find themselves using:  
- their bib number,  
- facial recognition,  
- shirt color,  
- approximate time they passed,  
- and other filters that actually make sense.

Instead of chasing photographers across Instagram, you just search and you’re done.

**Website:** [https://zebrasnap.com](https://zebrasnap.com)

### Tested in real events

We tested ZebraSnap in several races with photographers who trusted the idea. Everything worked smoothly:  
- photographers were happy,  
- runners found their photos quickly,  
- and the platform didn’t explode (bonus point for me).

That was the signal that it was ready to launch.

### What's next

I’m working on the mobile app and want to release it before the end of the year. My goal is simple: **make ZebraSnap the best platform out there**, in speed, usability, and technology for race photos.

If you run or photograph sports events, I’d love for you to try it and tell me what you think. Any feedback is welcome, seriously.

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

KetoLuna: AI-powered keto tracking that doesn't waste your time

ZebraSnap: the simple way to buy & sell race photos