iPhone Screenshots


LMK App is the easiest way to invite friends to get together for hiking, movies, lunch – just about anything. With LMK App, friends receive an invitation and reply either IN or OUT to let you know who’s IN. When someone replies OUT, they don’t have to make an excuse. LMK App takes care of the excuse for them.

LMK (Let Me Know)

• Uses SMS text to invite friends that don’t have the app
• Shows everyone invited who’s IN and who’s OUT
• Reminds friends who have not answered to reply IN or OUT
• Helps your friends who can’t attend by giving them an excuse (lame excuse, but fun)
• Send invitations to friends via Facebook, E-mail and Text
• Super easy to re-create past events like football Sundays, game nights, happy hours….

What's New

Version 1.3.0

Users can now invite people to events by Facebook, E-mail and Text. Updates made to app for minor bug fixes.

Ratings and Reviews

cpwilson5 ,

Great RSVP Tool

I use it for our weekly soccer games and making sure we have enough players easily without spamming people with everyone's responses to group texts. It centralizes all the responses and gives me the total count and who is "in" or "out". Recommend to anyone wanting text RSVPs for any type of event.

BrittBrittLew ,




Sphere of Influence, Inc.
1.5 MB
Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 12+ for the following:
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
Infrequent/Mild Mature/Suggestive Themes
© Copyright 2014 Sphere of Influence, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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