What's genuinely free and genuinely good
| Need | Free option | Honest assessment |
|---|---|---|
| Explaining a concept differently | Any general chatbot's free tier | Excellent. Paying for this specific job buys you very little. |
| Spaced repetition | Anki | The best scheduling available, free, forever. Rough interface, steep setup. |
| Note-taking | Obsidian, Notion free, plain markdown | Entirely sufficient. Note apps are not the bottleneck. |
| Reading a PDF and asking about it | Free tiers with upload limits | Works for one document at a time; falls over as a persistent library. |
| Practice questions | Past papers from your department | Better than any generated question. Use these first, always. |
| Focus timers, blockers | Dozens of free apps | Paying for a timer is close to pure waste. |
That table covers most of what a student needs. If your problem is any row above, the answer is a free tool and a habit, not a subscription.
The four things that generally aren't free
1. Persistent grounding in your own material
Uploading one PDF into a chat is free. Having a term's worth of slides, readings and recordings indexed so every answer comes from *your* syllabus, months later, without re-uploading, is the thing that costs money — it's ongoing storage and retrieval rather than a single conversation. It's also the difference between the internet's version of a topic and your examiner's, which is where marks live.
2. Citations you can check in seconds
Page-level citations require the retrieval step to be built in rather than bolted on. Without them, verifying an answer means re-reading the source, which in practice means nobody verifies. Why that matters is a whole argument on its own.
3. The pipeline from lecture to revisable material
Free tools do each step: transcribe, summarise, generate questions, schedule reviews. Doing all four manually, weekly, across five modules is where the habit dies — and it dies quietly, in week five, when the processing session gets skipped once.
4. Volume without limits
Free tiers cap uploads, message counts and file sizes. That's fine for occasional use and a genuine constraint in revision week, which is precisely when you need it most and when hitting a cap costs you an evening.
How to decide, honestly
- 1
Identify your actual bottleneck
Not "I want to study better". Specifically: is it not understanding, not remembering, not starting, or not having material to work from? Each has a different answer and only one of them is a tooling problem.
- 2
If it's understanding, use free chat
Explanation is the thing general models do best and it costs nothing. Paying here is buying convenience you already have.
- 3
If it's remembering, use Anki free for a month
If you build and sustain a deck, you've solved it for free. If you abandon it — and most people do, because deck-building is the cost — then the problem is the pipeline, not the scheduler, and that's the thing worth paying for.
- 4
If it's not starting, no tool fixes it
Initiation is a habit and environment problem. A subscription bought in a burst of motivation is a common and expensive form of procrastination.
- 5
If it's the manual work between lecture and revision, that's the paid case
This is the honest one. If the reason you're behind is that turning five modules of material into questions takes an evening you don't have, that's what the money removes.
- 6
Trial before term gets busy, not during
Any tool feels useful in week two. Test it in week eight, when you're behind — that's the condition it has to survive.
The costs that aren't the price
- Setup time. A tool needing three hours of configuration has cost you more than its fee. Check how long until first value.
- Lock-in. Can you export your notes and cards? If not, you're renting your own material.
- Privacy. Uploading course material is usually fine; uploading anything with patient or client data usually isn't. Check the policy and your programme's rules — AI study privacy covers what to look for.
- Attention cost. A tool with a feed, streaks and notifications is competing with your studying, not supporting it.
- The subscription you forget. Set a calendar reminder before the trial ends. This is the most common way students pay for tools they don't use.
Where we are, plainly
Thaxas is paid, at roughly the price of two coffees a month, and the case for it is narrow and specific: your material indexed and cited, and the pipeline from upload to questions to scheduled reviews without you doing the middle steps. It is not a better chatbot, and if you want a better chatbot the free tiers are strong.
It is also, honestly, not better than Anki at spaced repetition scheduling — the algorithm is the same family — and if you already maintain an Anki deck happily, the retention part of your problem is solved. We've written that comparison out at Thaxas vs Anki rather than pretending otherwise.
Student discounts and institutional access
Before buying anything, check what your institution already provides. Many universities have site licences for reference managers, transcription services, note apps and increasingly for AI assistants, and a substantial number of students pay for tools their library provides free.
Also check whether your department publishes past papers, model answers and mark schemes. Those are worth more than any generated question bank, they're free, and they're the first thing to exhaust — see how to use past papers.