Voice Impression Checker – Official Website, What It Is & How to Use

Voice Impression Checker — known in Japanese as こえ、はかる。 ("koe, hakaru", roughly "measure your voice") — is a free browser app that records you reading a short story aloud, then rates how masculine or feminine your voice sounds using both pitch and vocal resonance. This page collects the official link, what the tool actually measures, how to use it, and what to know about privacy before you hit record.

Voice Impression Checker Official Website

Voice Impression Checker is a Japanese-language web app for quick voice self-checks.

• Official app: https://voice-impression-checker.vercel.app/
• Creator: Not publicly credited on the site
• Price: Free
• Login required: No
• Platform: Web (hosted on Vercel, voice-impression-checker.vercel.app subdomain)
• Main use: Record a short reading and get a masculine/feminine voice rating, plus a voice-age impression
• Last checked: September 8, 2026

Visit Voice Impression Checker

We are not the official developer of Voice Impression Checker. This page helps users find, understand, and use the product.

What Is Voice Impression Checker?

Voice Impression Checker solves a surprisingly hard question: does my voice actually sound male or female to other people? You record yourself reading a short story printed on the page, and the app scores your voice on a masculine–feminine scale. It also estimates the age impression your voice gives.

The detail that separates it from generic "voice gender test" pages is the measurement method. Most free checkers look only at pitch (fundamental frequency, F0). This app weights formants — the resonance characteristics of your vocal tract — as the main axis of its judgment, which is much closer to how listeners actually perceive gender in a voice. Pitch alone can be misleading: a low-pitched voice with bright resonance can still read as feminine, and vice versa.

The site is explicit that results are reference values for entertainment, not medical or scientific assessment. The interface is Japanese only, but the flow is simple enough to use without reading the language.

How to Use Voice Impression Checker

1. Open the official Voice Impression Checker website in a browser that allows microphone access (Chrome or Safari work well).
2. Allow microphone access when the browser prompts you — the app cannot analyze without it.
3. Read the short story aloud at a natural, steady volume. The site recommends a quiet room, and recordings can run up to 2 minutes, though a short calm reading is enough.
4. Stop the recording and let the app analyze your sample.
5. Read the result: a masculine/feminine rating with numbers, plus a voice-age impression. Re-record to compare — for example, chest voice vs. falsetto (裏声), or your voice before and after a training session.

Is Voice Impression Checker Safe?

Based on what is verifiable from the site itself (checked September 8, 2026):

• No registration and no third-party login — no Google, Discord, or email sign-up step.
• No payment and no visible ads or redirect chains.
• The site states recordings are used only for analysis and are not saved to its server ("録音した声は解析にのみ使い、サーバには保存されません").
• It runs on a vercel.app subdomain hosted on Vercel, a mainstream hosting platform. The trade-off: this is an anonymous hobby-style project with no visible company, privacy policy, or support contact behind it.
• The main permission you grant is your microphone. Record in a quiet place and avoid reading out anything personally identifying; treat the results as entertainment, exactly as the site's own disclaimer asks.

Why Is Voice Impression Checker Popular?

The app circulates in Japanese voice-training communities — VTuber and VRChat users practicing voice feminization or masculinization, people curious how their voice changed after 声変わり (the voice change at puberty), and singers checking resonance. Formant-based voice checkers are a known niche there, and this one got picked up because it packages the analysis into a one-minute, shareable result.

There are recent posts on X (Twitter) of people trying it and at least one note.com write-up reviewing the experience, which fits a word-of-mouth pattern: someone shares their result and the link, and searches for the tool name follow.

Voice Impression Checker appears to be gaining attention through direct sharing and word-of-mouth in Japanese voice-training circles; there is no clear public source showing where the trend originated.

Voice Impression Checker Not Working?

If the app fails to record or analyze:

1. Refresh the page.
2. Check that the browser has microphone permission for this site (browser settings → site permissions) — the most common cause.
3. Open it in another browser, or on a phone instead of desktop.
4. Disable ad blockers or content blockers temporarily; some block the microphone API.
5. Confirm you're on the official HTTPS URL — microphone access requires a secure context.
6. Record in a quieter spot; heavy background noise can break the analysis.
7. Check whether the original Vercel deployment is still online, and try again later if the developer is updating the app.

If the site is confirmed down:

The original Voice Impression Checker website appears to be unavailable as of September 8, 2026.

Voice Impression Checker Alternatives

• Koemetry 共鳴チェッカー (onigirikl.jp/formant) — estimates F1/F2 formants in real time and plots them on a vowel chart; better for ongoing training feedback than a one-shot verdict.
• Praat (fon.hum.uva.nl/praat) — free desktop phonetics software for rigorous F0 and formant measurement; the serious option for researchers and voice teachers.
• A chromatic tuner or pitch-monitor app — shows pitch only, no gender judgment, but instant and useful as a rough F0 reference.

Frequently Asked Questions

What is the official Voice Impression Checker website?

The official website is https://voice-impression-checker.vercel.app/. In Japanese the tool is titled こえ、はかる。 — searching either name leads to the same app.

Is Voice Impression Checker free?

Yes. There is no paywall, no credit system, and no upgrade prompt — you record and get the full result for free.

Do I need an account to use Voice Impression Checker?

No. There is no login of any kind; you only need to grant microphone access in your browser.

Who created Voice Impression Checker?

The site does not credit a developer or company. It presents as an indie hobby project, which is consistent with its vercel.app subdomain hosting.

Does it store my recording?

According to the site, recordings are used only for analysis and are not saved to its server. There is no history or account, so nothing to delete later.

Is Voice Impression Checker still available?

Yes — the site was online and working when we last checked on September 8, 2026.