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  • Letters to Isabel screenshot 1
  • Letters to Isabel screenshot 2
  • Letters to Isabel screenshot 3
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About Letters to Isabel

Welcome to Letters to Isabel– a pediatric cancer community, but we call it a Club! Letters to Isabel (LTI) is a free, personalized pen pal network for kids battling pediatric cancer and their families fighting alongside them. We connect pediatric cancer fighters, survivors, and guardians based on age, diagnosis, location, and shared interests to build meaningful friendships. There are many kids fighting cancer just like you. With our help, finding a friend is easy! At Letters to Isabel, our goal is to give each child battling cancer a pen pal to connect with, learn from, and communicate with during treatment. Through the joy of exchanging letters with pen pals and the comfort of building lasting friendships, we strive to be a source of hope, kindness, and support for all those navigating childhood cancer. What can you expect on our platform and after you join our Club? Sign up and create a free account on the Letters to Isabel app. Our fun quiz will ask questions about you or your child’s cancer diagnosis, hobbies, and connection goals. Our system will connect you with the right friend based on your age, gender, diagnosis, location, and matching preference. Whether you are looking for a singular connection or multiple pen pals, we will build your childhood cancer network based on what matters most to you. Once matched, share your story with your new pen pal as you crush cancer together. We make it easy for you to communicate online by sending direct messages to your pen pal with the chat feature on our app. To bring your pen pal journey to life, all Club members receive a connection kit, known as a Boombox. Once it arrives by mail, explore your kit and bring joy to your pen pal by sending letters, pictures, crafts, and more! What are our Club members saying? “I was diagnosed with a brain tumor when I was ten years old. Nine years later, my most recent treatment was last summer. I discovered Letters to Isabel this year and was very happy to have the opportunity to connect with other survivors, especially by way of getting mail! I think that as an older survivor and technically, no longer a child, it is hard to find support for pediatric cancer patients who are now adults still needing help. Thank you for considering people who are in need of community, but who are no longer eligible for other support. It means a lot!” - Mia “Learning your child has cancer is an overwhelming experience…you find yourself in uncharted space. I remember feeling lonely as a mom. I was aching for a community of fellow cancer fighters. Letters to Isabel was my entryway to exactly what I needed. I am so grateful to have found Letters to Isabel. It has been a necessary reminder that we are not alone in our journey, and that there are creative ways to connect with others.” - Sam

What’s new

Version 1.3.8 · Updated May 21, 2026

- Request a new match — You can now request a new peer match directly from your match card if your current match isn't the right fit. - Language preferences — Set your preferred language in your account settings. We've expanded Spanish translations throughout the app. - Under-18 support — Added an information modal for members under 18 to ensure they have the right guidance when joining. - Block & report users — You can now block users and report concerns directly from a match card or profile. - Caregiver flow improvements — Fixed issues in the caregiver onboarding and signup experience. - Bug fixes & performance improvements — Notification reliability improvements, login fixes, and general stability updates.

App privacy

The developer, Letters To Isabel, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Contact Info: Email Address, Name, Other User Contact Info
  • User Content: Photos or Videos
  • Identifiers: User ID, Device ID
  • Sensitive Info: Sensitive Info

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Contact Info: Physical Address

Used for: App Functionality

Alternatives to Letters to Isabel

Looking for apps like Letters to Isabel? Here are 6 similar apps on the App Store. The highest rated is VELA: Own Your Education (5.0/5), and all 6 are free to download.

Letters to Isabel vs. alternatives
App Rating Price Last updated Compare
Letters to Isabel 5.0 / 5 (1 rating) Free May 21, 2026
Her Grief Her Strength – Free Jul 7, 2025 Compare
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The Children's Cancer Platform – Free Nov 5, 2024 Compare
CancerBuddy 4.1 / 5 (48) Free Oct 10, 2026 Compare
Connect App! 4.0 / 5 (1) Free Feb 2, 2026 Compare
VELA: Own Your Education 5.0 / 5 (8) Free Sep 18, 2026 Compare

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