Last updated: 2026-10-02
Accountability Partner texts
Luuna (Luuna, Inc.) is an iPhone budgeting app that helps people stop impulse purchases while they shop. A Luuna user can invite a friend or family member to be their accountability partner. With the partner’s permission, Luuna sends the partner a text when the user nears or goes over their weekly shopping budget, or asks the partner to approve a purchase.
Luuna never texts a partner until the partner agrees. The invite is sent by the user from their own phone, and the partner opts in themselves by tapping “Yes, text me” on a Luuna web page that shows the program terms.
Accountability Partner texts come from Luuna’s number, (617) 356-0544, and are available for US mobile numbers only.
How a partner opts in
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The user adds a partner in the Luuna app
In the app, the user opens Accountability Partners and picks a friend from their contacts. The partner shows as “Invite pending”, and the app explains that Luuna will only text them after they agree and that they can reply STOP anytime.

A newly added partner, waiting to agree. -
The user sends the invite from their own phone
Right after the partner is added, the app opens the user’s own Messages app with a personal invite link (the user can send it again later with “Send invite”). The user sends this message themselves, from their own number. It does not come from Luuna.

The invite the user sends from their phone. -
The partner reviews the terms and taps “Yes, text me”
The link opens a Luuna page that explains the program and shows the number that will get texts. Directly above the button it says:
By tapping “Yes, text me”, you agree to receive recurring automated text messages from Luuna at [your number] when your friend nears or goes over their weekly shopping budget, and when they ask you to approve a purchase. Message frequency varies. Message and data rates may apply. Reply HELP for help or STOP to cancel at any time. Consent is not a condition of any purchase. Terms · PrivacyOpening the link alone does nothing; only tapping the button opts the partner in. Nothing is pre-selected. You can view a working example of this page here: example opt-in page (no texts are sent from the example).

The partner opt-in page. -
Luuna confirms by text
Right after the partner agrees, Luuna sends one confirmation:
LuunaLuuna: You're now an accountability partner for a friend on Luuna. You'll get texts when they near or pass their weekly shopping budget. Msg frequency varies. Msg & data rates may apply. Reply HELP for help, STOP to opt out.
What partners receive
Message frequency varies. Message and data rates may apply. Examples:
Help and opting out
- STOP: reply STOP to any Luuna text to stop all Accountability Partner texts. You’ll get one confirmation: “Luuna: You're unsubscribed and won't get more accountability texts. Reply START to resubscribe.”
- START: text START (or YES) to (617) 356-0544 to rejoin after opting out.
- HELP: reply HELP for help: “Luuna Accountability: texts when a friend you support nears or passes their weekly budget. Help: support@tryluuna.com or tryluuna.com/sms. Msg & data rates may apply. Reply STOP to opt out.”
- Support: email support@tryluuna.com.
- Carriers are not liable for delayed or undelivered messages.
Privacy
No mobile information will be shared with third parties/affiliates for marketing/promotional purposes. All the above categories exclude text messaging originator opt-in data and consent; this information will not be shared with any third parties. Read the full Privacy Policy and Terms of Service.