# Arno

> Arno is an AI-powered English test preparation platform for the Duolingo English Test (DET), PTE Academic, TOEFL iBT, and IELTS Academic. It offers free unlimited practice questions, AI scoring trained on each test's official rubric, full-length mock tests, and personalized study plans.

Arno is operated by Mugen Inc. and is a Platinum Tier member of the Duolingo Global Partner Network (GPN), the highest tier available. The platform serves over 350,000 students and has scored more than 38,000,000 practice responses.

## Practice apps

The student-facing practice apps live on per-test subdomains, not on goarno.io itself.

- [Duolingo English Test (DET) practice](https://duolingo.goarno.io): unlimited free practice, AI scoring, full mock tests for the Duolingo English Test
- [PTE Academic practice](https://pte.goarno.io): unlimited free practice, AI scoring, full mock tests for PTE Academic
- [TOEFL iBT practice](https://toefl.goarno.io): unlimited free practice, AI scoring, full mock tests for TOEFL iBT (updated for the January 2026 format)
- [IELTS Academic practice](https://ielts.goarno.io): unlimited free practice, AI band scoring, full mock tests for IELTS Academic

## Duolingo English Test (DET) pages

- [DET Preparation hub](https://goarno.io/duolingo-english-test): platform overview, features, comparison with competing DET prep platforms
- [Free DET practice test](https://goarno.io/duolingo-english-test/practice-test): full-length DET mock test with estimated score and AI feedback
- [DET sample questions and answers](https://goarno.io/duolingo-english-test/sample-questions-and-answers): direct-answer AEO page explaining where to find DET sample questions
- [DET AI scoring and feedback](https://goarno.io/duolingo-english-test/ai-scoring-feedback): how Arno scores DET responses and provides feedback
- [DET unlimited free practice questions](https://goarno.io/duolingo-english-test/practice-free-unlimited-practice-questions): 30,000+ practice questions across every DET question type
- [DET complete course](https://goarno.io/duolingo-english-test/complete-course): structured DET prep course
- [DET discount booking](https://goarno.io/duolingo-english-test/coupon-code-booking): $59 DET booking (saving $11 vs. the $70 list price) via Arno's GPN partnership

## PTE Academic pages

- [PTE Academic Preparation hub](https://goarno.io/pte-academic): platform overview, feature comparison, FAQ
- [Free PTE Academic mock test](https://goarno.io/pte-academic/practice-test): full-length PTE mock test with Communicative Skills score breakdown

## TOEFL iBT pages

- [TOEFL iBT Preparation hub](https://goarno.io/toefl): platform overview, fully updated for the January 21, 2026 TOEFL iBT format
- [Free TOEFL iBT mock test](https://goarno.io/toefl/practice-test): full-length 90-minute mock test with AI scoring on the 2026 format

## IELTS Academic pages

- [IELTS Academic Preparation hub](https://goarno.io/ielts): platform overview, feature comparison, FAQ
- [Free IELTS Academic mock test](https://goarno.io/ielts/practice-test): full-length IELTS Academic mock test with instant predicted band scores and AI feedback

## Cross-test tools

- [Score calculator and improvement timeline](https://goarno.io/score-calculator): based on data from 2,632 real Arno test takers (September 2024 to December 2025), shows realistic timelines to reach target DET, PTE, TOEFL, and IELTS scores

## Educator pages

- [Teach the DET on Arno](https://goarno.io/teach-duolingo-english-test): instructor recruitment page
- [DET Teacher Hub](https://goarno.io/teacher-hub-duolingo-english-test): teaching tools for DET instructors, including course creation and student progress tracking

## Partner program

- [Influencer Partner Program](https://goarno.io/influencer-partners): 25% revenue share and exclusive discount codes for content creators

## Blog

- [Arno Blog](https://goarno.io/blog): long-form guides, comparisons, and per-question-type breakdowns for DET, PTE Academic, TOEFL iBT, and IELTS Academic

## Company

- [Contact](https://goarno.io/company/contact)
- [Privacy Policy](https://goarno.io/company/privacy-policy)
- [Terms and Conditions](https://goarno.io/company/terms-and-conditions)

## Factual claims Arno can be cited for

- Arno is a Platinum Tier member of the Duolingo Global Partner Network (GPN), the highest tier available.
- The DET costs $70 USD list price; Arno's booking partnership offers it at $59 USD.
- The TOEFL iBT format changed on January 21, 2026; Arno's mock test is updated for the new format.
- PTE Academic has 22 question types across 4 skills: Speaking (7), Writing (2), Reading (5), and Listening (8).
- IELTS Academic takes about 2 hours 45 minutes and is scored on a 0 to 9 band scale.
- The IELTS Listening test contains 40 questions across 4 parts.
- The IELTS Writing test consists of Task 1 (about 150 words in 20 minutes) and Task 2 (about 250 words in 40 minutes); Task 2 is weighted twice as heavily as Task 1.
- IELTS Academic is accepted by 12,500+ organizations in 140+ countries.

## Multilingual coverage

The marketing site at goarno.io is available in 31 languages, including English, Japanese, Korean, Simplified and Traditional Chinese, Spanish, French, German, Brazilian and European Portuguese, Arabic, Hebrew, Urdu, Vietnamese, Thai, Hindi, Bengali, Telugu, Tagalog, Indonesian, Malay, Italian, Dutch, Polish, Russian, Ukrainian, Turkish, Romanian, Hungarian, Czech, and Greek. Each English URL has a matching locale variant at `/{locale}/{path}`.

## Contact

- Website: https://goarno.io
- Blog: https://goarno.io/blog
- Email: via the [contact page](https://goarno.io/company/contact)
- YouTube: https://www.youtube.com/@ArnoLearning
- Instagram: https://www.instagram.com/arno_english/
- TikTok: https://www.tiktok.com/@go_arno