Comparison

Monster Messenger vs ThatCat

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

Head to head
About

Monster Messenger

This app provides a secure and engaging platform for children to communicate with friends and family. It allows for sharing photos, voice messages, drawings, and text, all under strict parental control and with a zero-tolerance bullying policy.

Highlights
  • Photo, voice, drawing, and text messaging
  • Cute sticker library
  • Photo personalization
  • Collection pinning and sharing
  • Full parental control
  • Reporting and blocking features
  • Zero-bullying policy
Features
Read full description

Monster Messenger is a safe instant messaging app for our little monsters. With Monster Messenger, kids communicate with their friends and family in a safe, fun and creative way! GROW UP WITH LOVE! Monster Messenger enables children and their relatives to exchange all these little daily signs of love and reinforcement that are oh-so important to help children to grow up in harmony and confidence. Sharing with your child a photo, a voice message, a drawing or a short text message gives you instant presence by your child, wherever you are. Your child can also safely communicate with family members and closest friends, because you validate all invitations received, and sent. With Monster Messenger, share all day long with your children what matters most for their growth: your love. Loaded with fun features: ‣ Photos, drawings, voice and text messages ‣ Tons of cute stickers to share ‣ Personalize your photos with stickers, drawings and text! ‣ Pin your favorite pictures to your collection ‣ Discover your friends' collections, like their images and enrich your own collection with the best ones A kid-safe experience: ‣ Full parental control: parents manage their children’s accounts, invitations, have access to their contact lists and can block contacts at any time ‣ Simple one-swipe gesture to report a conversation or to block a user ‣ 0-bullying tolerance policy: we invite children to think twice before sending some inappropriate messages ‣ Kid-safe and kid-appropriate content and behavior only are allowed within the App ‣ Professional trained moderators enforce anti-bullying, safe content and behavior policies ‣ Children (and all users') personal data is covered by a public privacy policy. In plain English: all of your children’s personal information (including conversations) is encrypted and never shared with any third party. One more thing: Monster Messenger is 100% free! :) Monster Messenger is created by eduPad, whose educational apps are already used by 10 million children in 146 countries.

About

ThatCat

Features
Read full description

I wonder how that cat is doing... ThatCat helps you stay connected to the cats in your neighborhood. ThatCat is a community-powered map app for sharing cat sightings. Whether you've spotted a stray or lost your beloved pet, you can exchange real-time information with people nearby. SPOT CATS ON THE MAP See a cat? Snap a photo and drop a pin. Add tags for behavior, health, and appearance — choose from 12 coat patterns and 11 descriptive tags. Browse nearby sightings at a glance. HELP FIND MISSING CATS If your cat goes missing, post an alert with their name, features, and last known location. The community becomes your search party. Use dedicated filters to find missing cat posts, and mark as "Found" when they're safely home. PRIVACY YOU CAN TRUST Photos are automatically background-blurred by AI, keeping only the cat in focus. Sighting locations are intentionally offset on the map, so exact spots are never revealed. CONNECT WITH STAMPS React with five simple stamps: "Cute," "Saw it too!," "Fed," "Needs help," and "Thanks." Set your nickname and profile icon to make it personal. SMART CAT MATCHING Based on coat patterns, the app automatically suggests similar cats spotted nearby — helping you connect the dots. BECOME A SUPPORTER · Up to 10 photos per post (free: 3) · Unlimited posting · Detailed stats and charts · 30+ exclusive profile icons · Supporter badge on your posts · Part of your subscription supports cat rescue efforts Your "I saw one!" could be someone's "Found you!" — join ThatCat and stay connected to the cats around you. EULA : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Monster Messenger4 screens
ThatCat4 screens

Verdict

The call

The clearest difference is in-app purchases: Monster Messenger at none against ThatCat's 2. Monster Messenger also leads on iOS requirement (9.0 vs 18.2). On price, update cadence, ads and device support 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. ThatCat sells 2 in-app purchases, starting at $2.99 per month. Monster Messenger asks for nothing beyond the download.

UpkeepUpdate frequency

Monster Messenger ships an update every 3 weeks, ThatCat monthly. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
Monster Messenger versus ThatCat: the parameters behind the verdict, then further details
ParameterMonster MessengerThatCat
PriceFreeFree
Rating4.6 (703 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings703 — better—
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better18.2
Further details — not scored
Size155 MB22 MB
Age rating4+17+
DeveloperCentres RelierDAIKI HAYASHI

In-app purchases

None

Monster Messenger

No in-app purchases

2 purchases

ThatCat

Subscriptions2
  • Cat Club+ (Monthly)$2.991 Month
  • Cat Club+ (Annual)$29.991 Year

Questions

Is Monster Messenger free?
Monster Messenger is free to download, with no in-app purchases.
Is ThatCat free?
ThatCat is free to download, with in-app purchases available.
Do Monster Messenger or ThatCat have ads?
Neither Monster Messenger nor ThatCat shows ads.
Which is updated more often, Monster Messenger or ThatCat?
Monster Messenger ships an update every 3 weeks, and ThatCat monthly. Most recently, Monster Messenger was updated on October 24, 2026 and ThatCat on October 13, 2026.

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