DAVx5
Hacker ApprovedSync app in Productivity & writing
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.
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.
17 people gave an opinion
- recommend it
- 14
- criticize it
- 3
- approval share
- 82%
Recommended in 8 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it carries the badge
- 14 people recommend itNeeds 10 or more, met.
- 4.7 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 8 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Works with your own cloud server
“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.”
Comment from 3 Mar 2026 in “/e/OS is a complete "deGoogled", mobile ecosystem” “It's pretty straightforward to sync the contacts on the phone with the contacts on Fastmail via CardDAV”
Comment from 1 Apr 2026 in “My son pleasured himself on Gemini Live. Entire family's Google accounts banned” “Meaning your contacts are now on your very own cloud and the calendar is synced as well.”
Comment from 14 Oct 2026 in “DAVx⁵ – CalDAV / CardDAV / WebDAV for Android” - Comment from 8 Jan 2026 in “Gmail is entering the Gemini Era”
- Comment from 9 May 2026 in “Google Broke reCAPTCHA for De-Googled Android Users”
Keeps calendar and contacts in sync
“Meaning your contacts are now on your very own cloud and the calendar is synced as well.”
Comment from 14 Oct 2026 in “DAVx⁵ – CalDAV / CardDAV / WebDAV for Android” “It'll do bi-directional sync between Android contacts/calendar and Fastmail”
Comment from 8 Jan 2026 in “Gmail is entering the Gemini Era” “CalDAV and CardDAV client; keeps mobile calendar and contact list synced”
Comment from 17 Feb 2026 in “GrapheneOS – Break Free from Google and Apple” Works with iCloud and iCal sources
“This app has been invaluable for keeping my Android in sync with my iCloud *DAV services.”
Comment from 14 Oct 2026 in “DAVx⁵ – CalDAV / CardDAV / WebDAV for Android” “I have no problem syncing with DAVx5 across various iCal sources on my phone.”
Comment from 21 Sep 2026 in “Apple iPhone 18 Pro Camera test”
What people warn about
Each mark is one comment
Unreliable sync on some phones
“davx is fragile. Many phone brands (all the OnePlus for example) interact poorly with it.”
Comment from 1 Apr 2026 in “My son pleasured himself on Gemini Live. Entire family's Google accounts banned” “DAVx5 actually didn't work reliably afaict.”
Comment from 1 Mar 2026 in “Samsung Galaxy update removes Android recovery menu tools, including sideloading” “I tried DAVx5 but found it unreliable.”
Comment from 1 Mar 2026 in “Block the "Upgrade to Tahoe" Alerts”
What people said
15 of the 19 comments that mention it, newest first. Each links to the original comment.
“Meaning your contacts are now on your very own cloud and the calendar is synced as well.”
“Unfortunately not as good as”
“This app has been invaluable for keeping my Android in sync with my iCloud *DAV services.”
“I have no problem syncing with DAVx5 across various iCal sources on my phone.”
“Set up Davx5 on mobile to sync with the local server”
“AFAIK this is the only working choice on Android.”
“davx is fragile. Many phone brands (all the OnePlus for example) interact poorly with it.”
“It's pretty straightforward to sync the contacts on the phone with the contacts on Fastmail via CardDAV”
“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.”
“DAVx5 actually didn't work reliably afaict.”
“I tried DAVx5 but found it unreliable.”
“CalDAV and CardDAV client; keeps mobile calendar and contact list synced”
“We have tested and recommend DAVx⁵, which is approximately $5.”
“It'll do bi-directional sync between Android contacts/calendar and Fastmail”
“third party open-source DavX offers that, although it's hacky and the push support is even more experimental”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.