AI Interview Practice 'MENTAI' Renamed to 'MENREN' — Shifting from One-off Practice to 'Polishing' Interview Skills
X-HACK Co., Ltd. has renamed its AI interview practice service for engineers, 'MENTAI,' to 'MENREN.' The new brand emphasizes a 'polishing' experience where candidates refine their interview skills until their weaknesses are overcome.
📋 Article Processing Timeline
- 📰 Published: April 28, 2026 at 19:00
- 🔍 Collected: April 28, 2026 at 10:32
- 🤖 AI Analyzed: April 28, 2026 at 14:23 (3h 51m after Collected)
Name changed and powered up further.
X-HACK Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo; CEO: Shinsuke Matsuda), which provides an AI interview practice web application specialized for engineer career changes, will change the service name of its AI interview practice service 'MENTAI' to 'MENREN.'
The new name is derived from 'Men(setsu) o Ren(rikomu)' (Polishing the interview). It renovates the brand to more clearly express the product's goal of being a personal interview coach that helps users repeatedly train by answering via voice, getting scored by AI, and eliminating weaknesses, rather than being a single-use tool that ends after one practice.
Data such as existing users' accounts, practice history, and scripts will be carried over as they are, and no action is required from the user side.
New Service URL: https://menren.recruit-hub.ai/
### Background of Name Change
**Why change the name now?**
Since its release in April 2026, MENTAI has refined its service under the concept of 'AI interview practice specialized for engineer career changes.' Through use by many people in a short period, we discovered the fact that what users truly find valuable is not a 'one-time practice' but the 'feeling of growth through repeated practice.'
- Wanting to practice the same question multiple times to improve the score rather than finishing after one answer.
- Wanting to refine the response script based on feedback and re-record.
- Wanting to identify weak points (e.g., specificity, fluency) and train them intensively.
We decided that the name should clearly indicate the product's direction in line with this actual usage pattern where interview skills grow through repeated 'polishing.'
**From 'MENTAI' to 'MENREN'**
The old name 'MENTAI' was used as a nickname combining 'Mensetsu' (Interview) and friendliness. On the other hand, the value we truly want to deliver is not just 'easy to try,' but a continuous growth experience where 'the more you polish, the better you get.' Therefore, we decided to refresh the name to 'MENREN' (MEN x REN), which directly represents the core of the product.
### Meaning infused in the new name 'MENREN'
Interviews can be polished.
While it takes years to acquire technical skills, interview skills can grow in a few weeks through correct repeated practice. It is a social loss for talented individuals with excellent technical experience to miss job offers due to 'how they communicate.'
MENREN aims to be the product that can most naturally rotate the following loop:
Answer via voice -> Scored on 5 axes -> Weak points visualized -> Refine script -> Answer again (score improves).
This 'polishing loop' is the unique value of MENREN that cannot be obtained by simply asking an AI to 'practice an interview.'
### Changes accompanying the name change
**User Impact:**
- All existing accounts, practice history, scripts, and scores will be carried over. No re-registration is required.
- Accessing the old URL (https://mentai.recruit-hub.ai/) will automatically redirect to the new URL (https://menren.recruit-hub.ai/).
- The sender's email address will be switched sequentially.
**Product Functions:**
- This name change is a redefinition of the brand, and there is no reduction in provided functions.
- All current core functions, such as voice recording, Whisper API transcription, and 5-axis feedback by Claude API, will continue as they are.
### Future Development
To deepen the experience of 'polishing the interview,' MENREN plans to release the following functions sequentially:
- Interview Mode: Continuously output multiple questions, and the AI generates follow-up questions based on the response content.
- Use of Entry Sheets: Read Entry Sheets to generate personal feedback.
From Phase 1 'Core Completion' to Phase 2 'Experience Expansion.' MENREN aims to be the personal interview coach most used by engineers.
Service URL: https://menren.recruit-hub.ai/
### Company Profile
- Company Name: X-HACK Co., Ltd.
- Location: THE CASK GOTANDA 702, 2-5-2 Higashi-Gotanda, Shinagawa-ku, Tokyo
- Representative: CEO Shinsuke Matsuda
- Established: March 2018
- Business Description: Generative AI/LLM utilization support, design and development of AI-driven development platforms, IT system introduction support/contract development
- Corporate Site: https://x-hack.jp
### Contact Information for this Matter
X-HACK Co., Ltd.
Attn: Toyoda
E-mail: support@menren.recruit-hub.ai
X-HACK Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo; CEO: Shinsuke Matsuda), which provides an AI interview practice web application specialized for engineer career changes, will change the service name of its AI interview practice service 'MENTAI' to 'MENREN.'
The new name is derived from 'Men(setsu) o Ren(rikomu)' (Polishing the interview). It renovates the brand to more clearly express the product's goal of being a personal interview coach that helps users repeatedly train by answering via voice, getting scored by AI, and eliminating weaknesses, rather than being a single-use tool that ends after one practice.
Data such as existing users' accounts, practice history, and scripts will be carried over as they are, and no action is required from the user side.
New Service URL: https://menren.recruit-hub.ai/
### Background of Name Change
**Why change the name now?**
Since its release in April 2026, MENTAI has refined its service under the concept of 'AI interview practice specialized for engineer career changes.' Through use by many people in a short period, we discovered the fact that what users truly find valuable is not a 'one-time practice' but the 'feeling of growth through repeated practice.'
- Wanting to practice the same question multiple times to improve the score rather than finishing after one answer.
- Wanting to refine the response script based on feedback and re-record.
- Wanting to identify weak points (e.g., specificity, fluency) and train them intensively.
We decided that the name should clearly indicate the product's direction in line with this actual usage pattern where interview skills grow through repeated 'polishing.'
**From 'MENTAI' to 'MENREN'**
The old name 'MENTAI' was used as a nickname combining 'Mensetsu' (Interview) and friendliness. On the other hand, the value we truly want to deliver is not just 'easy to try,' but a continuous growth experience where 'the more you polish, the better you get.' Therefore, we decided to refresh the name to 'MENREN' (MEN x REN), which directly represents the core of the product.
### Meaning infused in the new name 'MENREN'
Interviews can be polished.
While it takes years to acquire technical skills, interview skills can grow in a few weeks through correct repeated practice. It is a social loss for talented individuals with excellent technical experience to miss job offers due to 'how they communicate.'
MENREN aims to be the product that can most naturally rotate the following loop:
Answer via voice -> Scored on 5 axes -> Weak points visualized -> Refine script -> Answer again (score improves).
This 'polishing loop' is the unique value of MENREN that cannot be obtained by simply asking an AI to 'practice an interview.'
### Changes accompanying the name change
**User Impact:**
- All existing accounts, practice history, scripts, and scores will be carried over. No re-registration is required.
- Accessing the old URL (https://mentai.recruit-hub.ai/) will automatically redirect to the new URL (https://menren.recruit-hub.ai/).
- The sender's email address will be switched sequentially.
**Product Functions:**
- This name change is a redefinition of the brand, and there is no reduction in provided functions.
- All current core functions, such as voice recording, Whisper API transcription, and 5-axis feedback by Claude API, will continue as they are.
### Future Development
To deepen the experience of 'polishing the interview,' MENREN plans to release the following functions sequentially:
- Interview Mode: Continuously output multiple questions, and the AI generates follow-up questions based on the response content.
- Use of Entry Sheets: Read Entry Sheets to generate personal feedback.
From Phase 1 'Core Completion' to Phase 2 'Experience Expansion.' MENREN aims to be the personal interview coach most used by engineers.
Service URL: https://menren.recruit-hub.ai/
### Company Profile
- Company Name: X-HACK Co., Ltd.
- Location: THE CASK GOTANDA 702, 2-5-2 Higashi-Gotanda, Shinagawa-ku, Tokyo
- Representative: CEO Shinsuke Matsuda
- Established: March 2018
- Business Description: Generative AI/LLM utilization support, design and development of AI-driven development platforms, IT system introduction support/contract development
- Corporate Site: https://x-hack.jp
### Contact Information for this Matter
X-HACK Co., Ltd.
Attn: Toyoda
E-mail: support@menren.recruit-hub.ai