Collective Weight

Lose weight with your crew

Free · Designed for iPhone. Not verified for macOS.

New: iPhone Duo mode, widgets, an Apple Watch app, push alerts and one-tap rematches. Your challenge-mates see your % lost, never your weight. Collective Weight turns losing weight into something you actually look forward to, because you're doing it with your people. Log your weigh-in in seconds and watch your trend on a clean, zoomable chart. See your total lost, your streak, your projected goal date and exactly how far you have to go. Then make it interesting: start a challenge with friends, family or coworkers and race to lose the highest percentage of body weight. WHY YOU'LL ACTUALLY STICK WITH IT • Friends keep you honest. Group challenges, a live leaderboard and a group chat mean someone always notices when you show up, and when you don't. • Gentle nudges. A daily reminder at the time you choose, a Monday recap of where you stand, and alerts when your group is talking. • Progress you can see. Your trend, weekly rate, streak and goal projection update with every entry. CHALLENGES THAT MOTIVATE • Private challenges for any group and any dates; invite friends with a link or a 6-character code • Ranked by percentage of body weight lost, so everyone competes fairly • Your weight stays private: challenge-mates only see your % change • A live progress race of the whole group • Results, medals and bragging rights, then "Run it back" for a rematch in one tap WORKS EVERYWHERE YOU ARE • iPhone Duo: leaderboard and chat side by side when unfolded, tabletop logging, and seamless fold and unfold • Home and Lock Screen widgets • Apple Watch app and complications • Two-way Apple Health sync for weight, body fat %, BMI and lean mass • Pounds or kilograms STAY CONNECTED, SAFELY • Per-challenge group chats with reactions, replies and photos • Direct messages with friends • Block or report anyone in a tap Optional buy-ins are tracked for fun and settled between members outside the app. Collective Weight never collects or pays out money. Collective Weight is a motivation tool, not medical advice. Weigh in. Compete. Lose together.

  • 5.0
    out of 5
    1 Ratings

Our biggest update yet! NEW • iPhone Duo ready: unfold to see your leaderboard and group chat side by side, set it on the table in tabletop mode to log a weigh-in, and fold it back without losing your place. • Home and Lock Screen widgets: your progress, streak and challenge rank at a glance. • Apple Watch app and complications: your progress and challenge rank, right on your wrist. • Push notifications for group chats, DMs and reactions. • A daily weigh-in reminder at the time you pick. • Run it back: start a rematch with the same crew in one tap when a challenge ends. • "Results are in" alerts and a Monday recap of where you stand. • Invite links that drop friends straight into your challenge. • Privacy first: challenge-mates see your % lost, never your weight. • Block or report anyone, anytime. IMPROVED • Messages arrive instantly, with unread badges you can trust • Profile and chat photos upload reliably • Dates match your time zone • Faster Apple Health sync with no duplicate entries • Challenges wrap up automatically when they end • Smoother sign-up, sign-in and password reset Thanks for losing together with us!

The developer, Jared Kaeb, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Health & Fitness
    • User Content
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Jared Kaeb
Size
10.2 MB
Category
Lifestyle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
  • Apple Watch
    Requires watchOS 10.0 or later.
Languages
English
Age Rating
13+
  • 13+
  • Frequent
    Contests

    Contains
    Messaging and Chat
    Health or Wellness Topics
Copyright
© 2026 Kaeb Apps