For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Jihosoft WhatsMate - Jihosoft WhatsMate is an all-in-one WhatsApp manager for both Android & iOS users. It enables you to backup&restore WhatsApp, recover deleted WhatsApp data, and transfer WhatsApp files between Android and iPhone.
Dropbox - Online Sync and File Sharing
WhatsApp Extractor - WhatsApp Extractor for iPhone extracts and recovers shared photos, profile photos, videos, audio notes, whatsapp chat conversations, group conversations,shared locations and whatsapp contacts from your iPhone backup.
Google Drive - Access and sync your files anywhere
iMazing - iMazing lets you transfer music, files, messages, apps and more from any iPhone, iPad, or iPod to a computer, Mac or PC. Manage and backup your iOS device simply without iTunes. (was DiskAid)
Mega - Secure File Storage and collaboration