diff --git a/README.md b/README.md
index c185bd68..6ec2873d 100644
--- a/README.md
+++ b/README.md
@@ -23,26 +23,36 @@ https://app.yunohost.org/default/.
 N.B.: The YunoHost project will **NOT** integrate in its catalog applications that are not
 based on free-software upstreams.
 
+N.B.2 : We strongly encourage you to transfer the ownership of your repository to
+the YunoHost-Apps organization on GitHub, such that the community will help you
+with keeping your app working and up to date with packaging evolutions.
+
 To add your application to the catalog:
 * Fork this repository and edit the [apps.json](https://github.com/YunoHost/apps/tree/master/apps.json) file
 * Add your app's ID and git information at the right alphabetical place
 * Indicate the app's functioning state: `notworking`, `inprogress`, or `working`
-* *Do not* add the level entry by yourself. Our automatic test suite ("the CI") will handle it.
+* Indicate the app category, which you can pick from `categories.yml`
+* Indicate any anti-feature that your app may be subject to, see `antifeatures.yml` (or remove the `antifeatures` key if there's none)
+* Indicate if your app can be thought of as an alternative to popular proprietary services (or remove the `potential_alternative_to` key if there's none)
+* *Do not* add the `level` entry by yourself. Our automatic test suite ("the CI") will handle it.
 * Create a [Pull Request](https://github.com/YunoHost/apps/pulls/)
 
 App example addition:
 ```json
-    "wallabag": {
-        "url": "https://github.com/abeudin/wallabag_ynh",
-        "state": "working"
+    "your_app": {
+        "antifeatures": [
+            "deprecated-software"
+        ],
+        "potential_alternative_to": [
+            "YouTube"
+        ],
+        "category": "pick_the_appropriate_category",
+        "state": "working",
+        "url": "https://github.com/YunoHost-Apps/your_app_ynh"
     }
 ```
 
-N.B.: We strongly encourage you to transfer the ownership of your repository to
-the YunoHost-Apps organization on GitHub, such that the community will help you
-with keeping your app working and up to date with packaging evolutions.
-
-N.B.2: Implicitly, the catalog publishes the `HEAD` of branch `master`
+N.B: Implicitly, the catalog publishes the `HEAD` of branch `master`
 (this can be overwritten by adding keys `branch` and `revision`).
 Therefore, **be careful that any commit on the `master` branch will automatically be published**.
 **We strongly encourage you to develop in separate branches**, and only
@@ -50,28 +60,9 @@ merge changes that were carefully tested. Get in touch with the Apps group to
 obtain an access to the developer CI where you'll be able to test your app
 easily.
 
-### Updating apps' level in the catalog
+### Updating apps levels in the catalog
 
-App packagers should *not* manually set their apps' level. The levels of all the apps are automatically updated once per week on Friday.
-
-#### Helper script
-
-You can use the <code>add_or_update.py</code> Python script to add or update
-your app from one of the 2 JSON files.
-
-Usage:
-
-```bash
-./add_or_update.py apps.json [github/gitlab url OR app name [github/gitlab url OR app name [github/gitlab url OR app name ...]]]
-```
-
-### How to help translating
-
-Update on Nov. 2020: this part is broken / not maintained anymore for the
-moment...
-
-We invite you to use [translate.yunohost.org](https://translate.yunohost.org/)
-instead of doing Pull Request for files in `locales` folder.
+App packagers should *not* manually set their apps' level. The levels of all the apps are automatically updated once per week on Friday, according to the results from the official app CI.
 
 ### Apps flagged as not-maintained
 
diff --git a/add_or_update.py b/add_or_update.py
deleted file mode 100755
index 33c72915..00000000
--- a/add_or_update.py
+++ /dev/null
@@ -1,88 +0,0 @@
-#!/usr/bin/env python2
-
-import os
-import sys
-import json
-
-from urllib2 import urlopen
-from urlparse import urlparse
-
-states = {
-    1: "notworking",
-    2: "inprogress",
-    3: "working",
-}
-
-if __name__ == '__main__':
-    if not len(sys.argv[1:]):
-        print("I need a json file as first argument and a list of github urls")
-        sys.exit(0)
-
-    if len(sys.argv[1:]) < 2:
-        print("I need a list of github urls or app names after the json file")
-        sys.exit(0)
-
-    if not os.path.exists(sys.argv[1]):
-        print("The json file '%s' doesn't exist" % sys.argv[1])
-
-    content = json.load(open(sys.argv[1], "r"))
-
-    for url in sys.argv[2:]:
-        if not url.startswith("http"):
-            if url in content:
-                url = content[url]["url"]
-            else:
-                print "App name '%s' not in %s" % (url, sys.argv[1])
-                sys.exit(1)
-
-        if url.endswith("/"):
-            url = url[:-1]
-
-        if url.endswith(".git"):
-            url = url[:-len(".git")]
-
-        if not url.startswith("https://github.com"):
-            sys.stderr.write("WARNING: url '%s' doesn't starts with https://github.com, we will try with gitlab api\n" % url)
-
-        owner, repo = filter(None, url.split("/"))[-2:]
-        project_name = filter(None, url.split("/"))[-1].replace("_ynh", "")
-
-        if url.startswith("https://github.com"):
-            git_data = json.load(urlopen("https://api.github.com/repos/%(owner)s/%(repo)s/commits" % {"owner": owner, "repo": repo}))
-            revision = git_data[0]["sha"]
-        else:
-            parsed_uri = urlparse(url)
-            base_url = '{uri.scheme}://{uri.netloc}/'.format(uri=parsed_uri)
-            # Try with gitlab api
-            git_data = json.load(urlopen("%(base_url)sapi/v4/projects/%(owner)s%%2F%(repo)s/repository/commits/HEAD" % {"base_url": base_url, "owner": owner, "repo": repo}))
-            revision = git_data["id"]
-
-        if project_name not in content:
-            content[project_name] = {}
-        else:
-            print("INFO: project already in '%s', I'm updating it" % sys.argv[1])
-
-        content[project_name]["url"] = url
-        content[project_name]["revision"] = revision
-        content[project_name]["branch"] = "master"
-
-        if sys.argv[1] == "official.json":
-            content[project_name]["state"] = "validated"
-
-        else:
-            got_state = False
-            while not got_state:
-                answer = input("Give me a state for this repository (digit or name) in:\n%s\n\nState: " % "\n".join(["%s: %s" % x for x in sorted(states.items(), key=lambda x: x[0])]) + "\n")
-
-                if answer in states:
-                    answer = states[answer]
-                    got_state = True
-                elif answer in states.values():
-                    got_state = True
-                else:
-                    print("Invalid state.\n")
-
-            content[project_name]["state"] = answer
-
-    open(sys.argv[1], "w").write("\n".join(json.dumps(content, indent=4, sort_keys=True).split(" \n")) + "\n")
-    os.system("git diff")