Comparison

MyDD.ai vs HeyOtto

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

Head to head
About

MyDD.ai

This AI chat application is designed for children, offering age-appropriate guardrails and parental controls. It aims to teach kids how to use AI as a tool for thinking, rather than copying, while keeping parents informed.

Highlights
  • AI chat designed for children
  • Parental controls and oversight
  • Teaches AI as a thinking tool
  • Age-appropriate guardrails
  • Privacy-focused
Features
Read full description

Your kid is going to use AI… probably already is. But ChatGPT wasn't built for a 10-year-old. MyDD.ai was. It teaches them to think with AI, not copy from it, and that AI is a tool, not a friend. Age-appropriate guardrails are built in and you stay in the loop without hovering over their shoulder. Privacy Policy: https://mydd.ai/privacy Terms of Use: https://mydd.ai/terms

About

HeyOtto

This AI tool empowers children and teens to explore curiosity, creativity, and learning. It offers homework help, story creation, coding assistance, and image generation, all with parental oversight and safety features.

Highlights
  • AI Chat for questions
  • AI Tutor for homework help
  • AI Coding for game/app building
  • AI image and video creation
  • Parental oversight dashboard
  • Age-adaptive responses
  • Dyslexia-friendly design
Features
Read full description

HeyOtto is an award-winning general-purpose AI for kids and teens — built for curiosity, creativity, and learning with parents in the loop. **Winner of Best Kid-friendly AI in the 2026 SafeWise Kids Safety Awards.** For kids and teens: HeyOtto gives them space to ask questions, get step-by-step homework help, explore new ideas, create stories and artwork, and build games and apps with HeyOtto Code. • Age-adaptive responses and real-time safety monitoring help make AI more appropriate for growing minds. • AI Chat: Chat with Otto and ask questions about anything they're curious about. • AI Voice Mode: Have real back-and-forth conversations with Otto in voice mode • AI Tutor: Get homework help that explains the steps, not just the answer • Learning that adapts to each child's age, interests and pace • Find creative inspiration with idea cards when they don't know where to start • Create AI images and videos, and write and illustrate stories • Build games and apps with HeyOtto AI Coding save to projects • Turn ideas into short animations with HeyOtto Visuals, then share a link or export to MP4 • Search the web, when a parent turns it on • Keep everything they make in their Library For parents and teachers: • Use HeyOtto as your own personal AI assistant with a Pro plan subscription. Generate educational media, content, and motion animations using HeyOtto Visuals. • Oversight: one dashboard to view a feed of recent activity, plus every child's profile, settings and real-time alerts • Visibility: review chat history and each child's generated assets (images, videos, storybooks, apps, games, and animations) • Preferences: your values, guidelines, restricted topics, and which tools are enabled — all configurable via Settings • Controls: usage limits and quiet hours provide granular controls over when and how much the app can be used • Notifications: receive safety alerts by dashboard, email, or SMS, plus the option to receive a daily or weekly digest Built for Every Learner • A dyslexia-friendly font and accessibility-first design, so kids who learn differently get the same experience. Safety and Privacy • Age-adaptive: Otto adjusts its answers to each child's age • Real-time content filtering on every conversation • No ads • We never sell your family's data • COPPA-compliant, and 95% on the KORA benchmark Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chat.heyotto.app/privacy Questions, support or more information: contact@heyotto.app

Screenshots

MyDD.ai4 screens
HeyOtto4 screens

Verdict

The call

The clearest difference is update cadence: HeyOtto at monthly against MyDD.ai's every 2 months. MyDD.ai's advantage is iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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. MyDD.ai sells 1 in-app purchase, starting at $7.99 per month and HeyOtto sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for MyDD.ai against 5.0 for HeyOtto. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

MyDD.ai ships an update every 2 months, HeyOtto monthly. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
MyDD.ai versus HeyOtto: the parameters behind the verdict, then further details
ParameterMyDD.aiHeyOtto
PriceFreeFree
Rating5.0 (5 ratings)5.0 (7 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings57 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size39 MB8 MB
Age rating4+4+
DeveloperMyDD.AI LLCBerryWell

Customer experience

MyDD.ai

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HeyOtto

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

MyDD.ai

Subscriptions1
  • myDD.ai$7.991 Month
2 purchases

HeyOtto

Subscriptions2
  • HeyOtto! Pro$12.991 Month
  • HeyOtto! Pro$124.991 Year

Questions

Is MyDD.ai free?
MyDD.ai is free to download, with in-app purchases available.
Is HeyOtto free?
HeyOtto is free to download, with in-app purchases available.
Which has better reviews, MyDD.ai or HeyOtto?
MyDD.ai and HeyOtto are both rated 5.0 out of 5 on the App Store, from 5 and 7 ratings respectively.
Do MyDD.ai or HeyOtto have ads?
Neither MyDD.ai nor HeyOtto shows ads.
Which is updated more often, MyDD.ai or HeyOtto?
MyDD.ai ships an update every 2 months, and HeyOtto monthly. Most recently, MyDD.ai was updated on October 31, 2026 and HeyOtto on October 31, 2026.

Other comparisons