Comparison

Letters to Isabel vs Projectpal

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Letters to Isabel

This app connects children battling pediatric cancer with peers and families for friendship and support. It facilitates meaningful connections through a personalized pen pal network, allowing users to share stories and build a community.

Highlights
  • Personalized pen pal matching
  • Connect based on age, diagnosis, interests
  • Direct messaging chat feature
  • Connection kits (Boombox) for sending mail
  • Community for fighters, survivors, and guardians
Features
Read full description

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

About

Projectpal

Connect with other young women in NYC to find roommates, discover city events, and join topic-based communities for advice and recommendations. Share insights on everything from beauty and dining to apartment hunting and local spots.

Highlights
  • Roommate finder
  • City event discovery
  • Topic-based communities
  • Local recommendations
  • Advice sharing
  • Beauty and lifestyle tips
Features
Read full description

Welcome to girl internet. Projectpal connects girls to the coolest people, places, and things. All in one world built for you. Discover communities around the topics you actually care about. From beauty secrets and apartment advice to your latest obsession, favorite brands, and everything currently taking over your group chat. Ask questions. Share opinions. Find recommendations. Connect with girls who get it. Explore curated guides to the best things to do, try, buy, and talk about — powered by girls with taste. Because the best discoveries have always come from other girls. We just built a place for them to live. Step into girl world.

Screenshots

Letters to Isabel4 screens
Projectpal4 screens

Verdict

The call

The clearest difference is update cadence: Projectpal at fortnightly against Letters to Isabel's every 2 months. Projectpal also leads on ratings volume (10 vs 1). Letters to Isabel's advantage is device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Letters to Isabel against 5.0 for Projectpal. That said, the two scores are not equally well evidenced: Projectpal has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Letters to Isabel ships an update every 2 months, Projectpal fortnightly. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Letters to Isabel versus Projectpal: the parameters behind the verdict, then further details
ParameterLetters to IsabelProjectpal
PriceFreeFree
Rating5.0 (1 ratings)5.0 (10 ratings)
Positive reviews—100.0% of reviews
Number of ratings110 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size33 MB81 MB
Age rating4+17+
DeveloperLETTERS TO ISABEL NON PROFITProject Pal, Inc.

Customer experience

Letters to Isabel

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Projectpal

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Letters to Isabel

No in-app purchases

None

Projectpal

No in-app purchases

Questions

Is Letters to Isabel free?
Letters to Isabel is free to download, with no in-app purchases.
Is Projectpal free?
Projectpal is free to download, with no in-app purchases.
Which has better reviews, Letters to Isabel or Projectpal?
Letters to Isabel and Projectpal are both rated 5.0 out of 5 on the App Store, from 1 and 10 ratings respectively.
Do Letters to Isabel or Projectpal have ads?
Neither Letters to Isabel nor Projectpal shows ads.
Which is updated more often, Letters to Isabel or Projectpal?
Letters to Isabel ships an update every 2 months, and Projectpal fortnightly. Most recently, Letters to Isabel was updated on October 4, 2026 and Projectpal on October 24, 2026.

Other comparisons