Iro AIIro AI Blog
There is no best learning app, only a best app for the subject you picked and the way you learn it. Here is the shortlist by subject, the two questions that predict whether you will still be using it in March, and an honest note on where ours fits.
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 the subject first. The app follows from it, and almost every "best learning app" list gets this backwards.
Learning apps are not interchangeable products competing on quality. They are specialists, and the best one for languages is built on completely different principles from the best one for maths. A roundup that ranks them against each other is comparing a hammer to a saw.
| If you want to learn… | Start with | Why |
|---|---|---|
| A language | Duolingo | The benchmark for habit design, and free courses with ads. |
| Maths, logic, computer science | Brilliant | The strongest interactive teaching of concepts in this category. |
| School and university subjects | Khan Academy | Entirely free, non-profit, no paid tier at all. |
| Broad general knowledge | Kinnu | Structured paths across many subjects, with a genuinely free tier. |
| Ideas from books, fast | Blinkist, Headway or BeFreed | Compression is the product. Excellent for exposure and triage. |
| Using AI tools well | Iro AI (ours) | Practice with feedback on prompting and real AI workflows. |
| A formal credential | Coursera or a university | Apps do not issue accredited qualifications. Do not let one tell you otherwise. |
Duolingo, and it is not especially close for getting started. Its real achievement is the habit machinery — streaks, leagues, the gentle nagging — which is why every app in every other row of that table borrows from it. The honest limit is that it takes you to competent-tourist rather than fluent; conversation practice with actual humans is still the step it cannot replace.
Brilliant for interactive concept teaching, Khan Academy if budget is the binding constraint — it is completely free with no paid tier, which in this category is genuinely unusual. Brilliant's strength is that it makes you do the reasoning rather than watch someone do it.
Kinnu builds structured paths across a wide catalogue and has a real free tier. Good when you want a proper mental map of a subject rather than trivia.
Blinkist, Headway and BeFreed all compress long-form into short sessions; BeFreed adds goal-led plans and AI-narrated podcasts. These are exposure products and they are good at it. Just be clear-eyed that a summary transfers an argument, not a skill — if you have finished thirty and changed nothing, that is the format working as designed.
Iro AI is ours, so weigh accordingly. It is a practice app for one subject: prompting, tool choice, spotting AI mistakes, agents. More on where it does not fit below.
Subject narrows it. Format decides whether it works. Three kinds of product hide under "learning app":
The honest test of which you need: count how many online courses you have started and how many you have finished. If that ratio is bad, another course is not the answer no matter how good it is, and a five-minute daily format will genuinely teach you more.
That is not a claim about any particular app. It is true of Duolingo, Brilliant and everything else in this shape, including ours.
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).
Reviews measure how good an app is. These measure whether you will still be opening it in three months, which is the only thing that matters.
Do one session with a stopwatch. Count seconds spent reading or watching versus seconds spent making something the app then responded to. A session that is 90% consumption is a reading product with a progress bar, however it is marketed. That is fine if exposure is what you wanted — and fatal if you expected to get better at something.
Multiple-choice questions about text you just read are a comprehension check, not practice. The distinguishing feature is whether you generate anything the app can be wrong about.
Everyone misses days. The apps people stay with are forgiving about it. If one missed day visibly punishes you, you will quit in week three and conclude you lack discipline, when really the design selected for people who did not need it.
Also worth two minutes before you pay anything: find the renewal price and the cancel path in the store subscription sheet. This category has a well-earned reputation for cheap first terms and steep renewals. That applies to every app here, ours included.
Iro AI does one subject: using AI tools well. Five-minute sessions built on exercises rather than reading — write a real prompt and get told which part was weak, spot the fabricated citation inside an answer that reads perfectly well, choose between two tools and learn why the other loses. 29 paths across ChatGPT, Claude, Gemini, Perplexity, prompting, agents and automation.
It is the right pick if the thing you want to learn is AI, and you have decided that reading about it has not worked. Every path and all 477 lessons are open on the free tier, and the web app at app.tryiro.com needs no signup, so you can run both tests above without giving anyone an email address.
It is the wrong pick if you came here to learn a language, maths, or a school subject. Duolingo, Brilliant and Khan Academy are better at those than we will ever be, and recommending ourselves into rows where we do not belong would make this page worthless to you and to us.
Two more honest limits: we are iOS and web, with Android in development — the web app works in any mobile browser, but there is no Play Store listing today. And our curated library is AI-focused; Custom Paths generate a path on any topic from a subject, link, screenshot or PDF, and Community Paths add ones other learners built, but both are Pro and a generated path is not a catalogue written and tested by a team.
If you want to go deeper on either branch: the best microlearning apps compares this whole category by the job each app does, and the best AI learning app covers the AI-specific choice in detail.
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 entirely on the subject. Duolingo for languages, Brilliant for maths, logic and computer science, Khan Academy for school subjects on no budget, Kinnu for broad general knowledge, a summary library like Blinkist or Headway for ideas from books, and Iro AI for using AI tools well. Learning apps are specialists rather than interchangeable products, so picking the subject first is what makes the choice easy.
Two questions predict it better than any review. First, time one session and count how much of it you spend producing something the app corrects versus reading or watching — a session that is mostly consumption will not build a skill. Second, find out what happens when you miss a day; punishing streak designs cause people to quit in week three and blame their own discipline.
They solve different problems. A course is better when you need structured, sequential understanding of a field and you will genuinely finish it. An app is better when the real constraint is consistency, which for most people it is. The honest test is counting how many courses you have started versus finished — if that ratio is poor, a short daily format will teach you more than a long course you abandon.
Khan Academy is entirely free with no paid tier at all, which is genuinely rare here. Duolingo's full courses are free with ads. Kinnu has a real free tier. Iro AI opens all 29 paths and 477 lessons free, paced by a battery granting a lesson a day, and its web app needs no signup. Check what each free tier lets you finish rather than whether one exists.
No. Apps can issue certificates of completion, which are honest proof that you did the work, but they are not accredited qualifications. If you need a recognised credential, go to an accredited provider or a university. Be wary of any app that blurs this line.