Polaris Viewer vs PolyMind
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polaris Viewer
This app offers a mobile-optimized experience for viewing various document types, including Microsoft Office files, PDFs, and TXT. It provides smart document management features and supports cloud integration for easy access to your files.
- Mobile optimized document viewer
- Supports Microsoft Office, PDF, TXT, Zip, CSV
- Cloud storage integration (iCloud, Google Drive, Dropbox, etc.)
- Smart document management
- App lock with fingerprint, face, or password
- Night mode and paper texture background options
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Polaris Office, selected by 100 million users across the world, provides mobile optimized document viewer at the requests of numerous users. Using compact and stable Polaris Office Viewer which takes some edit functions out and strengthens view function, quickly and easily manage all the document files such as Microsoft Office, TXT, Zip file, as well as Adobe PDF! ■ Supporting Languages ■ • English, Korean, Japanese, German, Russian, Indonesian, Brazilian Portuguese ■ Supported formats ■ • (NEW) Now we support CSV format. • Microsoft Word : DOC, DOCX • Microsoft Excel : XLS, XLSX • Microsoft Powerpoint : PPT, PPTX, PPS, PPSX • Other documents and files : PDF, TXT, ODT, Zip ■ Main functions ■ Mobile optimized document viewer : Supporting must-have functions to easily view the documents in Mobile. • Landscape mode / Portrait mode / Multi window mode • View per page, View in a row • Able to dim the screen and choose background (Providing Night mode and Paper texture) • Supporting text copy function in document Smart document managing : Supporting the functions for managing various documents more efficiently. • Able to check all the documents in My device storage & other cloud service (Supporting iCloud, Google Drive, Dropbox, OneDrive, Box, WebDAV, FTP) • Able to manage main documents separately through bookmark settings. • Support various sorting methods. (Name order / Date order / Size order etc) • Support view function per document format. • Able to search document you need through search function. • Able to use App lock function (via fingerprint, face, password) ■ Note ■ • Homepage : Polarisoffice.com • Facebook : facebook.com/polarisoffice • Youtube : youtube.com/user/infrawareinc • Inquiry : support@polarisoffice.com • Terms and Conditions and Privacy Policy : www.polarisoffice.com/privacy
PolyMind
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PolyMind は、OpenAI・Google Gemini・Anthropic Claude・Ollama(ローカルLLM)、その他OpenAI互換のAPIエンドポイントに対応した、オープンソースのマルチプロバイダーAIチャットクライアントです。 ■ 複数のAIプロバイダーをひとつのアプリで 設定画面からプロバイダーをいつでも切り替え可能。ご自身のAPIキーを使って、お好きなAIモデルと会話できます。 ■ 主な機能 ・カスタムエージェント — 用途別のAIペルソナ(システムプロンプト)を作成・保存し、会話ごとに使い分け可能。文章校正・コードレビュー・翻訳・要約・アイデア出し・やさしい解説の6つがプリインストール済み ・リアルタイムストリーミング応答 ・画像入力(Vision)対応 — 写真を添付してAIに質問できます ・画像生成(OpenAI利用時、/image コマンド) ・Markdownレンダリング・コードのシンタックスハイライト ・チャット履歴のローカル保存・検索・リネーム ・応答の再生成・停止、メッセージの編集・削除 ・ダークモード対応 ・Temperature(応答の多様性)調整 ・利用したいモデルの一覧取得 ■ プライバシー重視の設計 APIキーは端末のセキュアストレージにのみ保存され、チャット内容は選択したAIプロバイダーへ直接送信されます。開発者のサーバーは存在せず、会話内容や利用状況を収集することもありません。広告・トラッキングSDKも一切含まれていません。 ■ 利用にはAPIキーが必要です 本アプリは「Bring Your Own Key」方式です。OpenAI・Google AI Studio・Anthropicなど、お使いになりたいプロバイダーのAPIキーをご自身でご用意ください(Ollamaはローカル環境で無料でご利用いただけます)。API利用料金は各プロバイダーの規定に従います。 ■ オープンソース 本アプリのソースコードは GitHub で公開しています。 https://github.com/softjapan/polymind プライバシーポリシー: https://softjapan.github.io/polymind/privacy.html 利用規約: https://softjapan.github.io/polymind/terms.html
Screenshots
Verdict
The clearest difference is in-app purchases: PolyMind at none against Polaris Viewer's 1. PolyMind also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 months). Polaris Viewer's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Polaris Viewer sells 1 one-off in-app purchase. PolyMind asks for nothing beyond the download.
Polaris Viewer ships an update every 3 months, PolyMind every 4 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | Polaris Viewer | PolyMind |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (74 ratings) — better | — |
| Positive reviews | 56.4% of reviews | — |
| Number of ratings | 74 — better | — |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 177 MB | 22 MB |
| Age rating | 4+ | 17+ |
| Developer | Polaris Office Corp. | rai rin |
In-app purchases
Polaris Viewer
- Remove Ads$10.99
PolyMind
No in-app purchases









