Iro AIIro AI Blog
Wondering turns any topic into a path of short, personalised lessons. If you want something more finished, more specialised, or free, here is the honest field, including when Wondering itself is still the right answer.
Editorial note: Iro AI is our app. Where it appears below we say so, and it has to earn its spot by the same criteria as everything else.
Wondering is a Y Combinator Summer 2026 company built by a two-person team. It turns any topic, or a link or PDF you supply, into a personalised path of roughly three-minute lessons with visuals, generated podcasts and exercises. It is good at what it does.
The reasons people go looking are usually one of four:
We make one of the apps below, so read this with that in mind. It is flagged where it appears.
Iro AI (ours). A single-subject app for getting good at using AI: 29 paths, 477 lessons and 2,700+ hands-on exercises across ChatGPT, Claude, Gemini, Perplexity, prompting, agents, automation and AI for specific jobs. You write real prompts and get them graded against a live model, spot hallucinations, and duel other learners. It also builds a course from a topic you type, a TikTok or YouTube link, a shared Instagram post, a screenshot or a PDF, so it covers Wondering's source-material ground too. Free tier with every path open; Pro is $49.99 a year, about $4.17 a month, or $9.99 monthly. That undercuts Wondering Pro, which is $7.50 a month on annual billing, or $90 a year, by roughly 45%. iOS and web, Android in development.
Brilliant. The strongest premium alternative for breadth with real interactivity, particularly maths, science, computer science and logic. Much larger catalogue than any new app, genuinely well-made problems rather than explanations with a quiz attached. Weaker if your interests are outside its subject range, and it will not build a course from a document you supply.
NotebookLM. Free, and the closest thing to Wondering's source-material feature. Give it your documents and it will summarise, answer questions and generate an audio overview. What it does not give you is a structured path, a difficulty curve, or any reason to come back tomorrow. Use it when you have the material and the motivation already.
Duolingo. Worth naming since everyone reaches for the comparison. Still the best habit loop in the category, still languages and a handful of other subjects. If what you actually liked was the daily streak rather than the any-topic promise, this is the original.
YouTube plus a plan. Free and unbeatable on coverage. The catch is that it has no structure, no feedback and no memory of where you left off, which is the exact set of problems these apps exist to solve. Fine for a specific question, poor for building a skill.
Narrow beats broad here, and it is worth being concrete about why.
A general learning app can explain what a context window is, what an agent does and why models hallucinate. That is real knowledge and it is useful. But using AI well is a performance skill, closer to writing or negotiating than to trivia. The gap between knowing what a good prompt contains and producing one on a real task under time pressure is exactly the gap that only practice closes.
That is the case for a single-subject app: it can afford to spend 2,700 exercises on one skill, grade the prompts you write rather than test whether you remember a definition, and keep a profile of which of six areas you are weakest in so you know what to train next.
If AI is one of ten things you are curious about this year, a general app is the sensible purchase. If it is the thing you want on your CV in six months, buy the specialist.
Iro AI turns ideas like the ones in this post into 5-minute exercises with feedback. Free tier, Pro from $4.17 a month ($49.99 a year, 7-day free trial).
Three cases, and they are not consolation prizes.
Your curiosity is genuinely broad. If this month is Roman history and next month is protein folding, an app that does one subject well is the wrong shape no matter how good it is.
You want it explained rather than drilled. If the goal is understanding a subject rather than performing a skill, an app built around explanation is the right shape, and graded reps would be overkill.
You learn best from visuals and audio. Generated podcasts and illustrated explanations are a legitimate way in, and the drill-heavy approach will feel like homework if that is not how your attention works.
Being early is also not only a downside. Small teams ship fast and listen to the first thousand users in a way larger ones stop being able to.
Answer one question honestly: do you want to understand something, or be able to do it?
Understanding is served by good explanation, and breadth is an advantage. Ability is served by graded repetition, and narrowness is an advantage. Most disappointment with learning apps comes from buying one shape and wanting the other.
Then check three practical things before paying: whether it is on the device you actually use, what the subscription renews at rather than what the intro says, and whether you can cancel in two taps through the App Store or have to email someone.
If the answer was AI, the AI rank quiz takes about two minutes with no signup and tells you which areas are weakest. For the wider field, see how to choose an AI learning app or the direct Iro AI vs Wondering comparison.
Iro AI turns ideas like the ones in this post into 5-minute exercises with feedback. Free tier, Pro from $4.17 a month ($49.99 a year, 7-day free trial).
It depends on the job. For getting good at using AI, a single-subject app that grades your work, such as Iro AI, which is ours and also builds courses from a link, screenshot or PDF. For maths, science and computing with real interactivity, Brilliant. For querying your own documents for free, NotebookLM. For pure habit-building, Duolingo.
NotebookLM is free and handles the source-material side, though it gives you no path structure or habit loop. Iro AI has a free tier with every learning path open, paced by a battery that gives you a full lesson each day. YouTube is free and has everything, with none of the structure or feedback.
If your curiosity is broad, you like learning from visuals and audio, and you want one app for whatever topic you are on this month, it is a reasonable subscription. If you want depth in a single subject or want to be tested rather than taught, a specialist app will serve you better for similar money.
Not at the time of writing. It is in early access on iOS and the web. If you are on Android, Brilliant and Duolingo both have Android apps, and Iro AI runs in any mobile browser with an Android app in development.
Three things: a structure that decides what comes next so you are not choosing, feedback on work you produced rather than only explanation, and a reason to return tomorrow. Apps that supply explanation alone tend to be enjoyed once and abandoned, which is the same failure mode as a saved video playlist.
Yes. Wondering Pro is $7.50 a month on annual billing, which is $90 a year, and that figure is an early-supporter founding rate. Iro AI, which is ours, is $49.99 a year or $9.99 a month, roughly 45% less annually, with every learning path open on the free tier. NotebookLM is free if you only need your own documents turned into something usable.