ISIISI is invite-only.
Accounts use a username and password — no email address or phone number is needed. New members join with an invitation code or QR code from someone already on ISI.
Contact the developer
Contact Oppdrag AS at post@oppdrag.no. Start your subject with ISI support, ISI privacy, or ISI safety report. You can also use the Oppdrag contact form.
If you are using TestFlight, you can also send beta feedback:
- Open the TestFlight app on your iPhone or iPad.
- Select ISI, then choose Send Beta Feedback.
- Describe what happened and include your app version. Attach a screenshot only if it helps.
For privacy or deletion questions, begin your message with Privacy request. Please do not send passwords, invitation codes, or private conversations.
TestFlight helpGetting started
How do I join ISI?
Membership is invite-only. Ask anyone already on ISI for an invitation — every member can invite. On the welcome screen choose Join with invitation, then paste the invitation code, open the shared link, or tap Scan QR code and point the camera at their screen. Choose a name, a username and a password. Invitations are single-use and expire after seven days.
Do I need an email address?
No. ISI accounts are a username and a password only. Because there is no email on file, there is currently no password reset — keep your password somewhere safe. If you lose it, any member can invite you again under a new username.
How do I invite someone?
Everyone on ISI can invite. Open Contacts → Invite friends & family and tap Create invitation to show a QR code and a shareable link. You can also redeem an invitation you were given from the same screen.
How do groups work?
Tap New chat → New group, name it and pick people from your circle. The creator is the group admin: admins can add or remove members, rename the group, make other admins and set disappearing messages. Anyone can leave from Group info. Group voice and video calls start from the phone and camera icons in the group; members can join an ongoing call from the banner at the top of the chat.
Photos, descriptions and who can post
Set your profile photo in Settings. Group admins set the group photo and description in Group info, tap a member to make them an admin or remove them, and can switch on Only admins can send messages for announcement-style groups. Members can still react and vote.
Replies, reactions, edits and forwarding
Swipe right on a message (or long-press → Reply) to quote it. Long-press for React, Forward, Edit (your own text messages, within 24 hours), Message info or Delete for everyone. Use the magnifier in a chat to search it.
Muting, pinning and deleting chats
In the chat list, swipe left for Mute (8 hours, a week or always — muted chats send no notifications) and Delete; swipe right to Pin a chat to the top. Deleting a chat removes it and its history from your account only; the other person keeps their copy and the chat returns if they write again. Swiping left on a group offers Leave.
Videos, locations, contacts and view-once
Use + in a chat to record a video (up to 60 seconds, 20 MB), pick a photo or video from your library (animated GIFs play inline), share your current location, share a contact from your circle, or send a file. Switch on View once before choosing a photo or video and the recipient can open it a single time; it is then removed from the server.
Mentions, stars, archive and broadcasts
Type @ in a group to mention someone. Long-press a message to Star it (find them under Settings → Starred messages). Swipe a chat to Archive it; archived chats live in the Archived folder. New chat → Broadcast sends one message to several people as separate private chats. Group admins can share an invite link from Group info; anyone with the link can join.
Read receipts
Settings → Privacy → Send read receipts. When off, people you chat with privately will not see gold flashes for your reads, and you will not see theirs. Group receipts are always on.
Polls, disappearing messages and storage
Use the + button in any chat to create a poll. In a contact’s profile or Group info, set Disappearing messages to 24 hours, 7 days or 90 days; new messages are deleted for everyone after that time. Settings → Storage shows how much space each chat’s photos, files and voice notes use and lets you delete the media you sent. Long-press your own message for Message info (who has read it in a group) or Delete for everyone.
Why are my messages or calls not going through?
You can only message and call people in your circle — those connected through an invitation. If either person has blocked the other, messages, files and calls are refused. Calls need a stable internet connection and microphone or camera permission.
How do I change the appearance?
Open Settings → Appearance and choose System, Light or Dark. The preference is saved on your device.
Privacy and safety
ISI is an independent friends-and-family app. It is not affiliated with a government or intelligence agency. It is not an emergency communication service.
Use the in-app Block and Report a concern controls on a contact’s profile for unwanted contact. To delete your account and its conversations, open Settings → Delete account; this cannot be undone.
Our privacy policy explains how the app and this website handle information.
Voice messages and flash marks
Open a conversation and tap the microphone beside the message field. Tap Start recording, allow microphone access, then stop and listen before sending. Recordings can be up to two minutes.
Tap a flash mark for its details: one flash means sent, two means delivered, and gold flashes mean read.