What is Android 'Polaris Office - Free Docs, Sheets, Slides + PDF' (Cloud Office)?

Polaris Office Cloud Office is cloud-based office program.
The sign-in account is required, and Cloud storage, aka My Polaris Drive, is created when you create your account.

If you upgrade your account to Smart, Pro, AI or AI-Plus, you can use Polaris Office on multiple devices, and it is suitable for users who use multiple devices.You are able to save your documents in My Polaris Drive when you connect network. If you sign-in to Polaris Office with same account at other devices, you can access documents saved in My Polaris Drive.

It is provided with five services: Basic/Smart/Pro/AI/AI-Plus.Depending on the service, there are restrictions on usage, number of available devices, functions, etc.By registering for an account with Polaris Office, this Basic Service (free service) account is given by default. With this account, you can view, edit, and save documents and have access to basic essential functions and features

* If you do not cancel your subscription, monthly/yearly automatic renewal payment will proceed.

How to install
1. Search Polaris Office in Google Play Store
2. Install Polaris Office.
* Please note that Polaris Viewer and Polaris Office for Smartbook are different products.

<Product specifications>

Required Permissions
Storage - Edit or delete content on shared storage
Reading content from shared storage
* This permission is required to read, edit, or move documents stored in the Android SD card to other storage.

Optional permissions
Contacts - Search for accounts on your device
* Permission to select the account used when connecting to Google Drive.

OS
OS X 4.4 or later

Supported formats
Microsoft Word 1997 – (.DOC, .DOCX)
Microsoft Excel 1997 – (.XLS, .XLSX)
Microsoft PowerPoint 1997 – (.PPT, .PPTX, .PPSX)
ODF (.ODT)
Adobe PDF 1.2 – 1.7 (.PDF)
Text (.TXT)
Zip(.Zip)
CSV

Compatible languages for viewing and editing documents
Arabic, Bulgarian, Czech, Danish, German, German(switzerland), Greek, English, English(UK), English(Australia), English(Canada), English(Ireland), Spanish, Spanish(Mexico), Persian, Finnish, Français, Frisian(Belgium), Frisian(Canada), Frisian(Switzerland), Croatian , Hungarian, Indonesian, Icelandic, Italian, Italian(Switzerland), Hebrew, Japanese, Kazakh, Korean, Macedonian, Malay, Norwegian Bokmal, Dutch, Dutch(Belgium), Norwegian, Polish, Portuguese, Portuguese(Brazil), Romanian, Moldavian, Russian, Slovak, Slovene, Serbian, Swedish, Thai, Turkish, Ukrainian, Chinese(Simplified), Chinese(Traditional), Marathi, Hindi, Vietnamese

Supported languages for UI
Arabic, German, English, Hebrew, Spanish, Français, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Portuguese(Brazil), Russian, Turkish, Chinese(Simplified), Chinese(Traditional), Vietnamese

Support add drive
Google Drive, Drop Box, One Drive, WebDav Clouds