# WhatLetter

OpenAITools.app のテレメトリ（2026-11-11 検証）によると、WhatLetter（whatletter.com）は AI 翻訳に分類される AI プラットフォームで、月間 310 の訪問を生み出し、前月比のトラフィック増減は +28（+9.9%）です。主要な地域市場はコロンビア（トラフィックシェア 83.7%）で、フリーミアムの料金モデルで運営されています。月間ボリューム別の主な競合代替ツールには OpenL Translate（月間 147.06万訪問）、LightPDF（月間 174.26万訪問）、Image Translate AI（月間 13.64万訪問）が含まれます。

WhatLetter is an AI document assistant that lets you photograph a paper, translate it into your own language, and then chat about it in plain words until the details make sense. It was built for immigrant families and older readers who have to deal with medical records, bills, legal forms and official letters they cannot easily read.

## 主なテレメトリと仕様

| 指標 | 値 |
| :--- | :--- |
| ツール名 | WhatLetter |
| ハンドル | whatletter |
| Status | active |
| Origin | independent |
| Maintenance | active |
| 公式ドメイン | whatletter.com |
| ウェブサイト URL | https://whatletter.com |
| カテゴリ | AI 翻訳, AIチャットボット, AI 要約ツール, AI OCR |
| 料金モデル | フリーミアム |
| 月間訪問数 | 310 |
| 前月比トラフィック変動 | 28 |
| 前月比成長率 | +9.9% |
| 主要市場 | コロンビア |
| 市場シェア | 83.7% |
| ダイレクト訪問 | 129 |
| オーガニック検索訪問 | 0 |
| ソーシャル訪問 | 0 |
| リファラル訪問 | 32 |
| メール訪問 | 10 |
| レビュースコア | 4 |
| 保存数 | 4 |
| 対応プラットフォーム | ウェブサイト |
| 請求プラットフォーム |  |
| 属性 | 機能: ウェブサイト; 料金: フリーミアム |
| タグ | ドキュメント翻訳, 多言語対応, AIドキュメントアシスタント, 言語翻訳, 書類の簡略化, AIチャットボット, 移民支援, シニア支援 |

## 概要

WhatLetter is an AI document assistant that lets you photograph a paper, translate it into your own language, and then chat about it in plain words until the details make sense. It was built for immigrant families and older readers who have to deal with medical records, bills, legal forms and official letters they cannot easily read.

## 料金とプラン

WhatLetter uses a freemium model. The Free tier covers capturing documents, up to 3 documents translated per month and up to 3 chat sessions per month. WhatLetter Plus is $1.99 USD per month, with a yearly option advertised at 16% off, and unlocks unlimited document translations, unlimited chat and access to all supported languages. Voice typing and Telegram integration are listed as upcoming rather than included today.

## 主な機能と特長

- **Snap, scan and understand:** Point your phone or webcam at a menu, bill, prescription or letter and WhatLetter reads the text off the image and prepares it for translation.
- **Translation across 30+ languages:** Pick one of 30+ supported languages, including Arabic, Bengali, Mandarin, Farsi, Hindi, Korean, Spanish, Tagalog, Urdu and Vietnamese, and read the paperwork in the language you think in.
- **Conversational follow-up chat:** After translating, you keep chatting with the assistant to ask what a term means, what a date implies, or what you are being asked to sign.
- **Plain-language summaries:** Long and technical material, from insurance paperwork to academic or financial reports, gets condensed into a summary you can actually finish reading.
- **Privacy-first handling:** The site says document images are not retained on its servers and that chat history is kept only for your own reference.

## 主なユースケース

- **Help a parent understand official mail (Caregiver or family member):** Medical records, prescriptions, insurance letters, bills and bank statements get summarised and translated so a patient or caregiver can act on them without relying on a bilingual relative.
- **Decode paperwork while abroad (Traveller):** A ticket, menu, form or schedule encountered on a trip can be photographed and explained in your language on the spot.
- **Summarise a long technical document (Student or analyst):** A student or researcher drops a dense paper or financial report into WhatLetter and reads a condensed, translated version before deciding what to study in depth.
- **Understand a form before signing it (New resident):** Legal forms, benefit applications and residency paperwork get translated and explained so the applicant knows what is being asked before signing.

## 強み

- Designed specifically for immigrant families and older users, not a generic translator
- Covers 30+ languages including many underserved ones
- Free tier is usable without a credit card for occasional documents
- Chat layer lets you ask follow-up questions instead of decoding a raw translation
- Stated policy of not storing uploaded document images on its servers
- Very low entry price for the Plus plan

## 制約・デメリット

- Web-based only right now, with no native iOS or Android app
- Free tier is capped at just 3 documents and 3 chat sessions per month
- A 404 /pricing page means plan details are only visible in the homepage pricing section
- Voice typing and messaging-app integrations are still listed as upcoming rather than shipped
- Advanced features beyond translation, summarization and chat are still thin

## よくある質問

### How does WhatLetter explain jargon in a document?
Open the chat page, tap the upload/capture button, take a picture of the page or choose an image of it, then pick the language you want. WhatLetter returns a simplified summary of the document, and you can keep asking follow-up questions in the chat the same way you would ask a person.

### Which languages are supported for translation?
The service advertises support for more than 30 languages, including Arabic, Bengali, Cantonese, Mandarin, Croatian, Danish, Dutch, English, Farsi, Filipino, Finnish, French, German, Greek, Hausa, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Tamil, Thai, Turkish, Urdu, Ukrainian and Vietnamese. You can see the current list inside the chat, and the team invites requests for missing languages.

### How secure are the documents I upload?
The site states that your document images are not stored on its servers and that chat history exists only for your own reference, is not shared with third parties, and is not accessed by them. Processing is described as local, with encryption in place.

### Is there a mobile app, or is it web only?
As of now WhatLetter runs in the browser on desktop and mobile, with no separate mobile app. The team says more platforms and features are being explored.

### WhatLetter の月間トラフィックと成長トレンドはどうですか？
WhatLetter は現在、月間 310 の訪問があり、前月比のトラフィック変動は +28（成長率 +9.9%）です。主要な流入市場はコロンビア（シェア 83.7%）で、月間 129 のダイレクト訪問と月間 0 のオーガニック検索訪問を含みます。

### WhatLetter は無料ですか？料金モデルは何ですか？
WhatLetter はフリーミアムの料金モデルで運営されています。WhatLetter uses a freemium model. The Free tier covers capturing documents, up to 3 documents translated per month and up to 3 chat sessions per month. WhatLetter Plus is $1.99 USD per month, with a yearly option advertised at 16% off, and unlocks unlimited document translations, unlimited chat and access to all supported languages. Voice typing and Telegram integration are listed as upcoming rather than included today. 対応する請求・チェックアウトプラットフォームには未掲載が含まれます。

### 2026年における WhatLetter の最適な代替ツールはどれですか？
OpenAITools.app のカテゴリ別トラフィックと機能の適合性に基づくと、WhatLetter の代替ツールトップ5は次のとおりです: 1. OpenL Translate（月間 147.06万訪問）; 2. LightPDF（月間 174.26万訪問）; 3. Image Translate AI（月間 13.64万訪問）; 4. DocTranslator（月間 18.2万訪問）; 5. Linnk.AI（月間 45.15万訪問）。

### WhatLetter はどのプラットフォームと主要な AI 機能に対応していますか？
WhatLetter は AI 翻訳, AIチャットボット, AI 要約ツール, AI OCR に分類され、以下のプラットフォームに対応しています: ウェブサイト。中核機能のタグにはドキュメント翻訳, 多言語対応, AIドキュメントアシスタント, 言語翻訳, 書類の簡略化, AIチャットボットが含まれます。

## 代替ツール

| ツール名 | 月間訪問数 | 料金モデル | 比較 |
| :--- | :--- | :--- | :--- |
| [OpenL Translate](https://openaitools.app/ja/tool/openl) | 1,470,643 | Freemium, Subscription | [比較](https://openaitools.app/ja/compare/openl-vs-whatletter) |
| [LightPDF](https://openaitools.app/ja/tool/lightpdf-com) | 1,742,568 | フリーミアム | [比較](https://openaitools.app/ja/compare/lightpdf-com-vs-whatletter) |
| [Image Translate AI](https://openaitools.app/ja/tool/image-translate-ai) | 136,424 | フリーミアム、有料、料金は要問い合わせ | [比較](https://openaitools.app/ja/compare/image-translate-ai-vs-whatletter) |
| [DocTranslator](https://openaitools.app/ja/tool/doctranslator-com) | 182,003 | フリーミアム、無料トライアル | [比較](https://openaitools.app/ja/compare/doctranslator-com-vs-whatletter) |
| [Linnk.AI](https://openaitools.app/ja/tool/linnk-ai) | 451,514 | フリーミアム | [比較](https://openaitools.app/ja/compare/linnk-ai-vs-whatletter) |
| [AI マンガ翻訳ツール](https://openaitools.app/ja/tool/ai-manga-translator-fast-accurate-multilingual-ocr) | 16,880 | フリーミアム | [比較](https://openaitools.app/ja/compare/ai-manga-translator-fast-accurate-multilingual-ocr-vs-whatletter) |
| [Image to Text](https://openaitools.app/ja/tool/image-to-text-converter) | 4,871,767 | フリーミアム | [比較](https://openaitools.app/ja/compare/image-to-text-converter-vs-whatletter) |
| [AI TranslateDocs](https://openaitools.app/ja/tool/ai-translatedocs) | 5,148 | 有料、料金は要問い合わせ | [比較](https://openaitools.app/ja/compare/ai-translatedocs-vs-whatletter) |
| [Overchat AI](https://openaitools.app/ja/tool/overchat) | 948,033 | フリーミアム | [比較](https://openaitools.app/ja/compare/overchat-vs-whatletter) |
| [AI Image Translator](https://openaitools.app/ja/tool/ai-image-translator) | 4,198 | フリーミアム、有料 | [比較](https://openaitools.app/ja/compare/ai-image-translator-vs-whatletter) |
| [BelinDoc](https://openaitools.app/ja/tool/belindoc) | 262,525 | フリーミアム、料金は要問い合わせ | [比較](https://openaitools.app/ja/compare/belindoc-vs-whatletter) |
| [Doctranslate.io](https://openaitools.app/ja/tool/doctranslate-io) | 41,890 | フリーミアム | [比較](https://openaitools.app/ja/compare/doctranslate-io-vs-whatletter) |

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出典: https://openaitools.app/ja/tool/whatletter