Comparison

Errly vs AI Tutor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Errly

Features
Read full description

Snap a homework problem and get a step-by-step AI explanation, then save it to your error notebook and review it before the test. For students 13+ in high school and college: math, physics, chemistry, biology, English, history, geography and more. Start free, with free solutions every day. From daily homework to exam week After class, save the questions you found difficult and note what went wrong. Before a test, bring them back for focused review. At university, create subjects for your courses and keep problem sets and lecture questions together. Capture and organize • Capture handwritten questions: photograph them or write a question directly in the app, then check and edit the recognized text • Also scan printed questions, import images and PDF pages, or type your question • Keep multi-page passages and diagrams connected to their questions • Save the original, your answer, notes and the reason for a mistake • Correct the detected subject or save as Unclassified for later Make room for every subject Math, physics, chemistry and biology include subject-specific guidance and topic organization. Chinese language and literature, English, history, geography and politics are also built in. Create custom subjects for literature, other languages, university courses or professional exams, then organize them with your own labels. Understand, review and practice • Follow guided explanations of the reasoning • Ask follow-up questions with Pro or Ultra; explore another approach when suitable • Revisit saved questions with flashcards and spaced review • Generate practice from your mistakes; with Ultra, choose a supported question type, such as multiple choice or short answer, when suitable for the source question • Find questions by subject, keywords and labels; Ultra adds search by meaning • With Ultra, build printable worksheets from saved original questions or suitable AI-generated practice • Export questions and learning reports as PDF or Word, within your export allowance • Practice on paper with A4 PDF or Word files: advanced templates leave room for working and put solutions on separate pages, with an eligible subscription or export credit Learn in eight languages The interface and explanations support English, Simplified Chinese, Japanese, French, German, Korean, Spanish and Portuguese. Choose how you read the explanation while keeping the original question unchanged. Keep your notebook across devices With Pro or Ultra, sign in and enable cloud sync to sync subjects, questions, images and progress across supported devices, within your cloud storage allowance. Saved local content remains available offline; AI requests require an internet connection. You can export or delete your data. AI explanations and generated practice depend on the question and the material provided. Automatic checking is available for supported question types; open-ended answers use reference points and self-review. Some features require a Basic, Pro or Ultra subscription. Usage and export allowances depend on your plan and purchases. Subscriptions renew automatically unless cancelled. Local prices, billing periods, any trial eligibility and full benefits are shown before purchase. Manage or cancel subscriptions in your Apple account settings. Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Errly Terms of Service: https://errly-60ac8.web.app/terms.html Privacy Policy: https://errly-60ac8.web.app/privacy.html

About

AI Tutor

Features
Read full description

AI Tutor is a math homework helper and study buddy that never just hands you the answer. Snap a photo of a math problem, and your AI math tutor reads it and asks you step-by-step questions until you solve it yourself, the way a great math tutor does. WHY STUDENTS AND PARENTS CHOOSE IT • Math homework help for grade 1 to grade 12: elementary math, middle school math, high school math, algebra 1, pre-algebra, geometry and word problems • Step by step math, not a math solver: the tutor gives hints, checks your work and asks the next question • Scan math problems with the camera or pick a photo; handwriting and several problems in one picture are fine • Snap your written work: the tutor points to the exact line that went wrong and keeps guiding • Answer by typing, by voice, or by handwriting on the iPad scratchpad • Stuck? Ask for a hint, say "I'm stuck", or get a short lesson that re-explains the concept with a new example • Animated visuals for fractions, geometry, number lines and bar models • Your study buddy Pi, a little dog in a graduation cap, waves, thinks along and celebrates every correct step TOPICS COVERED Fractions, decimals, percent, ratio and proportion, equations, algebra, geometry, area and perimeter, word problems, arithmetic and mental math, functions, statistics and probability, exam prep. FOR PARENTS Help kids with math even if you have forgotten how. Use it as a math checker for finished homework, or let the app sit with your child while you cook. The parent report shows problems done, time spent, how much was solved without help, and the skills that need practice. Share it with one tap. LEARN MATH BETTER The tutor remembers where your child usually trips up and brings it back at the right moment in the next problem. Every session ends with a summary of the concepts used, so learning math sticks instead of copying answers. LANGUAGES English, Vietnamese, French, Chinese, Japanese and Korean. The tutor teaches in the language of the problem. BY GRADE Grade 1, grade 2, grade 3, grade 4, grade 5 (elementary math), grade 6, grade 7, grade 8 (middle school math, pre-algebra), grade 9, grade 10, grade 11, grade 12 (algebra 1, algebra 2, geometry, precalculus). Also used for homeschool math, summer math practice, math test prep and catching up after a missed class. FREE Unlimited problems. No sign-in required to start. Sign in to keep your progress across devices. AI Tutor is the homework app for students who want to actually understand math, and for parents who want more than a photo math answer key.

Screenshots

Errly4 screens
AI Tutor4 screens

Verdict

The call

The clearest difference is in-app purchases: AI Tutor at none against Errly's 10. AI Tutor also leads on update cadence (daily vs every 4 days). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Errly sells 10 in-app purchases, starting at $2.99 per month. AI Tutor asks for nothing beyond the download.

UpkeepUpdate frequency

Errly ships an update every 4 days, AI Tutor daily. Both last shipped on November 6, 2026.

Scorecard2 real differences · 4 level
Errly versus AI Tutor: the parameters behind the verdict, then further details
ParameterErrlyAI Tutor
PriceFreeFree
Update frequencyEvery 4 daysDaily — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.515.0 — better
Further details — not scored
Size167 MB75 MB
Age rating12+4+
Developer奎锋 张Manh Toan Nguyen

In-app purchases

10 purchases

Errly

Subscriptions6
  • Errly Extra Storage 50 GB$2.991 Month
  • Errly Pro Weekly$4.997 Days
  • Errly Pro Monthly (No Trial)$9.991 Month
Show 3 more
  • Errly Ultra Monthly$14.991 Month
  • Errly Pro Yearly (No Trial)$59.991 Year
  • Errly Ultra Yearly$119.991 Year
One-time4
  • Errly Advanced Export (1 Use)$0.99
  • Errly Forest Theme$0.99
  • Errly Midnight Blue Theme$2.99
Show 1 more
  • Errly Advanced Export (Unlimited)$4.99
None

AI Tutor

No in-app purchases

Questions

Is Errly free?
Errly is free to download, with in-app purchases available.
Is AI Tutor free?
AI Tutor is free to download, with no in-app purchases.
Do Errly or AI Tutor have ads?
Both Errly and AI Tutor show ads.
Which is updated more often, Errly or AI Tutor?
Errly ships an update every 4 days, and AI Tutor daily. Most recently, Errly was updated on November 6, 2026 and AI Tutor on November 6, 2026.

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