About AptisBot — Who builds it and why

Who's behind it

I'm Roberto, an active secondary-school teacher in Spain. I went through the public-teaching examination process myself, and I have watched hundreds of colleagues go through it: the nerves before the call, the wait for results, and the constant accumulation of master's degrees, courses and certifications "you need to score points".

The idea behind this project is simple: make language certification preparation accessible to anyone — without expensive academies, without funnels, without paying three times for the same piece of paper. AptisBot is the first bot in a series with the same goal: get an official qualification in the minimum time and at the minimum cost, starting with English certifications (Aptis, Cambridge, IELTS, TOEFL).

The project is personal, with no sponsorships, no lead capture, no upsells. If a part of it ever becomes paid (for example, an optional tier when it reaches 1,000 users), it will be announced openly and what is free today will stay free.

How it's built

3,700+ practice questions in a proprietary bank, tagged by skill, CEFR level and Aptis-faithful task type.
Continuous quality auditor: two LLMs (Gemini Pro + GPT-4o-mini) cross-check every new question before it's added.
Speaking + Writing with AI feedback: official Aptis 0–6 rubric reproduced with literal quotes.
CEFR predictor: estimates your current level after 30–50 answers.
Spaced repetition (SRS): questions you miss come back at increasing intervals, Anki-style.
11 languages on demand for users outside Spain.

Everything runs on a private server. Questions are produced combining manual work and LLMs with cross-verification. It's continuous work: items are added and revised every week.

Other bots in beta

AptisBot is the first one. These are the next ones — all in beta, all with the same philosophy: free, no funnel, language certification at the lowest possible cost.

English certifications

@PreparaCambridgeBot — Cambridge English (B2 First, C1 Advanced, C2 Proficiency).
@PreparaIELTSBot — IELTS Academic / General Training.
@PreparaTOEFLBot — TOEFL iBT.

All of them work the same way as AptisBot: no forced registration, no data sharing, no payment. Same goal — the official certificate at the lowest time and cost.

Sister bots specific to the Spanish education system (free ESO/FP exams, teaching civil-service exams) are listed on the Spanish version of this page.

Want a heads-up when a new bot ships?

Email only, opt-in, no spam. I'll ping you when a new bot is published. Reply "unsubscribe" to the first message to opt out.

What this bot is NOT

It does not promise C1 in 2 weeks. Learning a language takes time. The bot speeds things up but works no miracles.
It does not sell courses. No paid tier today. If one comes, it'll be optional and clearly labeled.
It does not replace a human teacher. If you have the budget for a real Speaking partner, an academy or a private tutor still adds value the bot cannot.
It does not guarantee a pass. The bot is a study tool, not a shortcut.
It does not share your data. Only what's needed to serve you exercises and track your progress.

How to support the project

If it has helped you and you want to support (without paying):

Tell others who are preparing Aptis. Word of mouth moves the most.
Share the bot in Telegram groups for your country or context.
Send feedback: any dubious question, error, suggestion — use /feedback inside the bot.
Pass the exam and let me know with /aprobado: success stories help the next person.