# DAVx5

14 Hacker News commenters recommended DAVx5 and 3 criticized it, November 2025 to November 2026. It was recommended in 8 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Android app that keeps calendars and contacts in sync with your own CalDAV and CardDAV cloud, with the most common caveat being unreliable behaviour on some phones.

## Why people recommend it

- Works with your own cloud server (5 comments): "It comes with built-in DAVx5. Their hosted offering is just another provider and using your own cloud provider is the same process as using theirs." ([source](https://news.ycombinator.com/item?id=47227933)) "It's pretty straightforward to sync the contacts on the phone with the contacts on Fastmail via CardDAV" ([source](https://news.ycombinator.com/item?id=47598264)) "Meaning your contacts are now on your very own cloud and the calendar is synced as well." ([source](https://news.ycombinator.com/item?id=50094608))
- Keeps calendar and contacts in sync (3 comments): "Meaning your contacts are now on your very own cloud and the calendar is synced as well." ([source](https://news.ycombinator.com/item?id=50094608)) "It'll do bi-directional sync between Android contacts/calendar and Fastmail" ([source](https://news.ycombinator.com/item?id=46544351)) "CalDAV and CardDAV client; keeps mobile calendar and contact list synced" ([source](https://news.ycombinator.com/item?id=47047358))
- Works with iCloud and iCal sources (2 comments): "This app has been invaluable for keeping my Android in sync with my iCloud *DAV services." ([source](https://news.ycombinator.com/item?id=50089247)) "I have no problem syncing with DAVx5 across various iCal sources on my phone." ([source](https://news.ycombinator.com/item?id=49784887))

## What people warn about

- Unreliable sync on some phones (3 comments): "davx is fragile. Many phone brands (all the OnePlus for example) interact poorly with it." ([source](https://news.ycombinator.com/item?id=47604836)) "DAVx5 actually didn't work reliably afaict." ([source](https://news.ycombinator.com/item?id=47205011)) "I tried DAVx5 but found it unreliable." ([source](https://news.ycombinator.com/item?id=47203500))

## Cite as

Hacker Approved, "DAVx5", https://hackerapproved.com/p/davx5/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).