# Wonli 원리 - 수학도감 > Top-tier accuracy, photo AI problem solving. Concept True/False, self-type tests, type-based problems, and even past exam questions. Canonical page: [https://chrome-stats.com/d/com.wonli.app](https://chrome-stats.com/d/com.wonli.app) ## Overview - **ID:** `com.wonli.app` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** 원리 - **Category:** EDUCATION - **Downloads:** 320 - **Version:** 1.6.0 - **Last updated:** 2026-10-26 - **First published:** 2026-08-30 - **Publisher country:** KR - **Size:** 31 MB - **Data as of:** 2026-10-31 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.wonli.app) - **Website:** [https://wonli.net/support](https://wonli.net/support) - **Privacy policy:** [https://wonli.net/privacy](https://wonli.net/privacy) ## Description Do you really know the math concepts?

Identify the parts you don't understand using the Concept True/False and Self-Type Tests, and solve them yourself using type problems and past exam questions. If you get stuck on a problem, ask via photo.

Principle AI, which boasts the highest accuracy rate, provides step-by-step solutions. You can ask about multiple problems at once, and you can pinpoint specific parts of the solution you don't understand to ask again.

■ AI Problem Solving via Photo

Upload a photo of a problem you don't understand, and Principle AI will explain it with a step-by-step solution. You can ask about multiple problems at once. If a photo contains multiple problems, select the area for each problem to check the solution for each one.

You can pinpoint specific parts of the solution you don't understand to ask again, and you can also ask about math concepts in writing.

■ Concept True/False and Self-Type Test

Check concepts with True/False for each sub-unit, and view the answer and explanation for each individual problem.

The Self-Type Test does not require you to solve problems. Simply look at the problem and select the direction of the solution, and it will identify your difficulty level for each type.

■ Type Problems and Past Exam Questions

Type problems are organized in the order they are learned. Once you select a difficulty level, you can view representative problems for each type and solve them immediately.

For past exam questions, you can solve problems from the Achievement Test, Mock Tests, and CSAT in one go under timed conditions, just like a real exam, and then grade them, or solve them one by one and grade them immediately.

■ Concept Summary with Detailed Illustrations and Explanations

Review the meanings, properties, and easily confusing conditions of concepts from 7th grade to 12th grade. You can also reconfirm concepts you need while solving problems.

■ High-Performance Calculator

A graph calculator and an equation calculator are included in the app. You can input functions and equations to check everything from the graph shape to the value. The equation calculator displays the graph and the answer consecutively on a single screen once an equation is entered. General calculations and calculation history are also available.

This is a math learning app for middle and high school students. You must be 14 years of age or older to sign up. There may be errors in AI responses.

Subscription Information

We offer monthly auto-renewing subscriptions within the app. Prices and contents for each subscription can be checked on the purchase screen. Subscriptions automatically renew until canceled, and you can manage or cancel them through the Billing and Subscriptions menu on Google Play. Terms of Service: https://wonli.net/terms

Privacy Policy: https://wonli.net/privacy

Customer Support: https://wonli.net/support ## Rankings - #1,493,577 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.wonli.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [MathCrave: AI Photo Math](https://chrome-stats.com/d/com.mathcrave.app) — 238 users - [수영픽 - AI 수학·영어 문제풀이](https://chrome-stats.com/d/com.suyopic.ai) — 28 users - [Math AI Photo Solver](https://chrome-stats.com/d/com.ai.mathscanai) — 1,930 users - [우열](https://chrome-stats.com/d/com.neoproject.study) — 5 users - [다풀 : 찍으면 바로 AI 문제 풀이 영상 · 채점](https://chrome-stats.com/d/kr.mathtutor.b2c) — 2,393 users - [Soru Çöz AI: SnapMath](https://chrome-stats.com/d/com.serhatbubolar.zekiogrenci) — 130 users - [Solvyz: AI Problem Solver](https://chrome-stats.com/d/com.solvyz.app) — 19 users - [Math AI - Homework Solver](https://chrome-stats.com/d/com.yaroslav12.mathAI) — 41 users - [AI Math Solver - PhotoMath](https://chrome-stats.com/d/com.anujitha.ai_math_master) — 295 users - [Tutor AI](https://chrome-stats.com/d/com.pbs.tutorai) — 3,878 users - [MathWIse: AI Study Companion](https://chrome-stats.com/d/co.median.android.wenbbob) — 47 users - [MathGo - AI Math Solver](https://chrome-stats.com/d/com.rishi_plou.mathgo) — 828 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.wonli.app)