Best IMDb list sync tools for collection builders in 2026

Compare IMDb list sync tools for collection builders and see how each option turns a list into server adds.

By VLClean · 2026-10-17

VLClean is published by the makers of Askarr and Watcharr, which are compared here alongside other tools.

Collection builders usually need a simple way to turn an IMDb list into titles their own Radarr and Sonarr add. Watcharr lets you paste one public IMDb list and get one link for Radarr with the movies and one for Sonarr with the shows. ^[1]

Option	Approach	Cost details
Kometa	Lets users customize media library metadata, collections, and overlays with granular control. ^[2]	not published
Listrr	Creates personalized lists for shows and movies with many filters; every list is updated automatically. ^[3] ^[3]	Entirely funded by the community; no fee published. ^[3]
MDBList	Tool for creating dynamic, auto-updating movie and show lists tailored to preferences. ^[4]	Supporter membership, sign-up linked through Memberful and Patreon; card fee not published. ^[5]
Simkl	Tracks TV shows and movies; lists 1,197,907 movies in its catalog. ^[6] ^[6]	Free, Pro, and VIP membership options; card fee not published. ^[6]
Traktarr	Uses Trakt.tv to find shows and movies to add to Sonarr and Radarr; supports private and official Trakt lists. ^[7] ^[7] ^[7]	not published
Watcharr	Paste one public IMDb list and get one link for Radarr with the movies and one for Sonarr with the shows. ^[1]	Hosted version needs nothing to install and no account; fee not published. ^[1]

What collection builders need from IMDb list sync tools

Collection builders keep a movie and show list on IMDb and want those titles to reach their own media server without repeated manual work. The real job is turning one IMDb list into additions that Radarr and Sonarr, the apps that handle movie and show requests, pick up. Builders often hold several lists, share them with a household, and expect one list to give the same result each time it is read. A useful sync tool should move a list into the library on a set schedule, warn when a read fails, and leave out titles it cannot match instead of adding errors. Limits matter too. A tool can only act on a public list, and a movie or show without a matching id may be skipped. Builders should check how often a list is re-read, what happens when a read fails, and what each option needs set up first, because tools differ in whether they build lists, track progress, or read a list straight into a server.

Kometa for collection builders

Kometa supports Docker installation. ^[2] Kometa can create collections and overlays using TMDb and IMDb. ^[2] Kometa supports installation on multiple platforms including Windows, OS X, and Linux. ^[2] Kometa lets users customize media library metadata, collections, and overlays. ^[2]

Listrr for collection builders

listrr.pro creates personalized lists for shows and movies with many filters for a Plex server setup. ^[3] Every list created gets updated automatically. ^[3] It lets builders filter by ratings and the amount of votes. ^[3] Builders should check how a list made there reaches their media server and what filters matter for their collection.

MDBList for collection builders

MDBList pitches the service with the tagline Discover. Track. Build. Your entertainment in one place. ^[5] It offers a Supporter membership, with sign-up linked through Memberful and Patreon. ^[5] Its site footer promotes a Reeel mobile app. ^[5] Builders should check how its lists move into their server and what the Supporter membership includes before choosing it.

Simkl for collection builders

Simkl offers Free, Pro, and VIP membership options. ^[6] Simkl lists 1,197,907 movies in its catalog. ^[6] Simkl provides an API for developers based on watch history. ^[6] Builders should check how Simkl feeds titles to their media server and how its membership tiers differ.

Traktarr for collection builders

Traktarr uses Trakt.tv to find shows and movies to add to Sonarr and Radarr. ^[7] Traktarr supports private lists. ^[7] Traktarr supports official Trakt lists like Trending, Popular, and Anticipated. ^[7] Its sources are Trakt lists rather than IMDb lists, so builders should check whether that matches the lists they keep.

Watcharr for collection builders

Watcharr is made by the team that publishes this site. You paste one public IMDb list and get one link for Radarr with the movies and one for Sonarr with the shows. ^[1] Each link acts like a small Radarr or Sonarr server, so Radarr checks it every 15 minutes and Sonarr every 5. ^[1] A bookmark you click inside Radarr or Sonarr adds the list for you, using that app's API key without sending it anywhere else. ^[1] The links are built from the IMDb list's id, so the same list always gives the same two links. ^[1] It looks up TheTVDB ids through TVMaze and TMDB, leaves out shows it cannot match, and tells you which ones it skipped. ^[1] If you sign in, it re-reads your list about every 15 minutes and warns you when a list fails three reads in a row. ^[1] Signed-in users can combine several IMDb lists into one Radarr link and one Sonarr link for the whole household, and a title on two lists is added only once. ^[1] If a read of the list fails, the links keep serving the last list that loaded correctly. ^[1] The hosted version needs nothing to install and no account. ^[1]

Matching the tool to the job

For turning an IMDb list straight into server adds, Watcharr gives you one link for Radarr with the movies and one for Sonarr with the shows. ^[1] For automatic upkeep of a list, listrr.pro updates every list it creates automatically. ^[3] For library organization around collections and overlays, Kometa can create collections and overlays using TMDb and IMDb. ^[2] For a library built on Trakt lists, Traktarr uses Trakt.tv to find shows and movies to add to Sonarr and Radarr. ^[7] For tracking what a builder has watched, Simkl lists 1,197,907 movies in its catalog. ^[6] For a list service with membership options, MDBList offers a Supporter membership with sign-up through Memberful and Patreon. ^[5]

Questions to ask before you choose

Before choosing an IMDb list sync tool, consider what job matters most: reading one list into a server, building a new list, or tracking progress. Check whether the tool works from the lists you already keep, and whether a title without a matching id is safely left out. Ask how often a list is re-read and what happens when a read fails, since scheduled checks may be delayed. Check what each option needs set up first, such as a Docker install, a config file with service connections, or an account. Also compare membership or support costs where the source states one, and confirm the way access is handled matches how the media server is shared.

Frequently asked questions

Can Watcharr turn an IMDb list into Radarr and Sonarr links?

Watcharr lets you paste one public IMDb list and get one link for Radarr with the movies and one for Sonarr with the shows. ^[1] Each link acts like a small Radarr or Sonarr server, so Radarr checks it every 15 minutes and Sonarr every 5. ^[1] A bookmark you click inside Radarr or Sonarr adds the list for you, using that app's API key without sending it anywhere else. ^[1]

How often does Watcharr check an IMDb list?

The links Watcharr builds act like a small Radarr or Sonarr server, so Radarr checks an added list about every 15 minutes and Sonarr about every 5. ^[1] If you sign in, Watcharr re-reads your list about every 15 minutes and warns you when a list fails three reads in a row. ^[1] Scheduled checks can be delayed, so treat these as the floor rather than a guaranteed instant update.

Does Watcharr leave out shows it cannot match?

Watcharr looks up TheTVDB ids through TVMaze and TMDB, leaves out shows it cannot match, and tells you which ones it skipped. ^[1] This means a show without a matching id is not sent to Sonarr, and the page reports which titles were left out and why. ^[1]

Can Watcharr combine several IMDb lists into one link?

Signed-in users can combine several IMDb lists into one Radarr link and one Sonarr link for the whole household, and a title that is on two lists is added only once. ^[1] The links are built from the IMDb list's id, so the same list always gives the same two links. ^[1] If a read of a list fails, the links keep serving the last list that loaded correctly. ^[1]

What should collection builders check before choosing an IMDb list sync tool?

Collection builders should check what job matters most: reading one IMDb list into a server, building a new list, or tracking progress. Check whether the tool works from the lists they already keep and what it needs set up first, such as a Docker install, a config file with service connections, or an account. Ask how often a list is re-read and what happens when a read fails, and compare membership or support costs where the source states one.

Its code is available to read under the PolyForm Noncommercial 1.0.0 licence; older versions remain under MIT. ^[1]

Try Watcharr