Iro AIIro AI Blog
NerdSip generates a micro-course on whatever topic you type. That is genuinely useful, and it is also the reason people go looking for something else: a generated course on everything is not the same as a curated one on the subject you actually care about. Here are the alternatives, and which problem each one solves.
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.
Pick by what you actually want to learn. If it is using AI tools well, Iro AI is the closest alternative: same five-minute format, but a curated curriculum instead of generated courses. If it is general knowledge, Kinnu. If it is the maths and computer science underneath AI, Brilliant or Khan Academy. If it is a language, Duolingo, which is the app everything in this category is modelled on.
What you give up by leaving NerdSip is breadth. Its whole proposition is that you type any topic and get a course back, and none of the alternatives below do that across every subject. Iro AI comes closest with Custom Paths, which generate a path on a topic you name, but the curated library it sits alongside is about AI specifically.
Three reasons come up, and only the third is a complaint.
Worth being fair about the first two: neither is a flaw in NerdSip. Broad generated content is what it is for, and it does that better than anything else here.
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).
Everything in this table is either published by the company or observable in the product. Where we could not verify something we have left it out rather than guessed.
| App | Best for | How content is made | Free tier | Platforms |
|---|---|---|---|---|
| NerdSip | Any topic, on demand | AI-generated from a topic you type, plus a browsable library of courses other people generated | One full sample course a day, no account needed. No AI generations. | iOS, Android, plus a read-only web library |
| Iro AI (ours) | Using AI tools well | Curated: 29 paths, 477 lessons, 2,700+ exercises across 24 exercise types, plus Custom Paths generated on a topic you name | Every path open, paced by a Battery that gives a lesson a day and recharges overnight | iOS and a free web app, no signup. Android in development. |
| Kinnu | General knowledge | Curated pathways across history, science, philosophy and more | Not verified by us | iOS |
| Brilliant | Maths, logic, CS foundations | Curated interactive problem sets | Not verified by us | iOS, Android, web |
| Khan Academy | Academic foundations | Curated courses and exercises, from a non-profit | Free, with no paid tier | iOS, Android, web |
About the blank cells. Anything marked "not verified by us" is something we could not confirm from the company's own store listing or website at the time of writing. Most comparison pages fill those cells from affiliate sites, which is how a wrong price ends up repeated on twenty pages. We would rather leave a gap and send you to the listing. The same rule is why we quote no dollar price for NerdSip: it publishes in euros only, and no official dollar figure exists for us to cite. Check the renewal price and the cancel path before you enter a card, on any app here, including ours.
Iro is the closest alternative if your goal is specifically to get good at using AI. Same five-minute daily shape as NerdSip, same gamified spine of streaks, XP and ranks, but the content is a curriculum rather than a generator: 29 paths covering ChatGPT, Claude, Gemini, Perplexity, prompt engineering, agents and automation, with 2,700+ exercises across 24 exercise types.
The practical difference is what happens when you get something wrong. A generated course quizzes you on what it just told you. Iro's Prompt Lab has you write an actual prompt and then tells you which part was weak, scoring it on clarity, specificity, constraints and context. Duels put the same recall under time pressure against another learner matched by rating.
Being straight about this, because a comparison page that finds no fault with its own author is not worth reading.
Iro also runs as a free web app at app.tryiro.com with no signup, which is the fastest way to see whether the format suits you.
Three questions settle it.
And check the renewal price and the cancel path before you enter a card, on any of these. That advice is not about any particular app on this list; it is just how subscriptions work.
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 what you want to learn. For using AI tools well, Iro AI is the closest match: the same five-minute daily format, but a curated curriculum of 29 paths and 2,700+ exercises rather than courses generated on request. For general knowledge, Kinnu. For maths and computer science foundations, Brilliant or Khan Academy. NerdSip remains the best option if what you want is a course on any topic you can name.
There is a free tier, and it is unusually generous as a demo: one complete sample course a day, including the lessons, the quiz and the summary, with no account required. What it does not include is AI generations, so creating your own course on a topic you choose requires the paid plan. NerdSip publishes that price in euros; check your own App Store listing for the figure in your currency.
Breadth versus depth. NerdSip generates a course on anything you type. Iro is one subject, using AI, taken further: 29 curated paths, 477 lessons and 2,700+ hands-on exercises, plus a Prompt Lab that grades prompts you write and head-to-head duels matched by rating. Iro also has Custom Paths for generating a path on a topic you name, so the generated format exists, it just sits alongside the curriculum rather than replacing it.
Yes, NerdSip is on both iOS and Google Play. Iro AI is currently iOS plus a free web app at app.tryiro.com that needs no signup, with an Android version in development and a waitlist on the home page. If you are on Android and want a native app today, that is a genuine point in NerdSip's favour.
They are good at coverage and weak at judgement. A generated course reliably produces a structure, some lessons and a quiz on almost any topic, which is genuinely useful for exploring something new. What it cannot do is know which mistakes learners actually make on that subject, or design an exercise that catches them, because nobody taught it that subject specifically. For a topic you intend to get good at rather than just meet, curated beats generated.