Comparison

Duck Duck Moose Reading HD vs Osmo Shape Builder

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

Head to head
About

Duck Duck Moose Reading HD

This app offers a zoo-themed adventure to teach phonics and reading skills to young children. It features word and letter activities aligned with Common Core State Standards, along with a parent reporting tool to track progress. Developed with educators, it's designed for ages 3-7.

Highlights
  • Zoo-themed learning adventure
  • Phonics and reading skill development
  • Word and letter activities
  • Common Core State Standards alignment
  • Parent progress reporting tool
  • Developed with educators
Read full description

An award-winning app based on Common Core State Standards, Duck Duck Moose Reading teaches phonics and reading skills in a fun zoo-themed adventure. With word and letter activities, kids learn by playing with flamingos, monkeys, lions and more. Keep track of progress through a new parent reporting tool. AWARDS: Parents’ Choice Gold Award; Children’s Technology Review Editor’s Choice Award. AGES: 3-7. PLAY CATEGORY: Early Learning/Curriculum ACTIVITIES 9 ACTIVITIES BASED ON COMMON CORE STANDARDS 
 - Letter-sound and word activities 
 - Recognizing and naming lowercase letters 
 - Demonstrating knowledge of letter-sound correspondences 
 - Isolating and pronouncing sounds in CVC (consonant-vowel-consonant) words WORDS & LETTERS: Teaches phonics through 9 different activities - Learn the letter sounds for all consonants, short vowels and long vowels - Practice spelling consonant-vowel-consonant (CVC) words PARENT REPORTING: Includes a new reporting tool so parents and teachers can see how a child is progressing DEVELOPED WITH EDUCATORS: - Developed in conjunction with Stanford University Educator, Jennifer DiBrienza, PhD in - Early Elementary Education and former NYC public school teacher (K-Grade 2) - Tested extensively in Kindergarten classrooms COMMON CORE STANDARDS: RF.K.1d, RF.K.2d, RF.K.2e, RF.K.3a, RF.K.3b ABOUT DUCK DUCK MOOSE (A wholly-owned subsidiary of Khan Academy) Duck Duck Moose, an award-winning creator of educational mobile apps for families, is a passionate team of engineers, artists, designers, and educators. Founded in 2008, the company has created 21 top-selling titles and has received 21 Parents’ Choice Awards, 18 Children’s Technology Review Awards, 12 Tech with Kids’ Best Pick App Awards, and a KAPi award for “Best Children’s App” at the International Consumer Electronics Show. Khan Academy is a nonprofit with a mission to provide a world-class education for anyone, anywhere. Duck Duck Moose is now part of the Khan Academy family. We rely on our community of volunteers and donors. Get involved today at www.duckduckmoose.com/about. Check out the Khan Academy app to learn and practice all kinds of topics for elementary school through college and beyond. We’d love to hear from you! Visit us at www.duckduckmoose.com or drop us a line at support@duckduckmoose.com.

About

Osmo Shape Builder

This app helps young children learn basic geometric shapes through interactive play. It progresses from identifying shapes to creating them, fostering a love for learning and turning screen time into an educational experience.

Highlights
  • Learn basic geometric shapes
  • Compose and create shapes
  • Identify and describe shapes
  • Color recognition
  • Hands-on learning system
  • Inspires love of learning
Read full description

Fill a magic mansion with furniture, items and incredible things! This game teaches basic geometric shapes in progression. Start with identifying and describing shapes, then advance to creating shapes on your own. LEARN ABOUT SHAPES Explore basic shapes concepts including composing shapes, relative positioning, and color recognition. INSPIRE THE LOVE OF LEARNING Designed for children ages 3-5 to inspire their love of learning through hands-on play. TURN SCREEN TIME INTO LEARNING TIME Osmo’s unique technology transforms your tablet into a hands-on learning system! *Requires the Osmo Base for iPad and Silicone Sticks & Rings. Each sold separately or as part of Osmo Little Genius Starter Kit. Learn more by visiting www.playosmo.com. *Please see our device compatibility list here: https://support.playosmo.com/hc/articles/115010156067 ABOUT OSMO -- 21ST CENTURY PLAY AND LEARNING Osmo uses the screen to create a new healthy, hands-on learning experience that promotes creativity, problem-solving and social interaction. We do this with our reflective artificial intelligence technology.

Verdict

The call

The clearest difference is review sentiment: Duck Duck Moose Reading HD at 43% against Osmo Shape Builder's 0%. Duck Duck Moose Reading HD also leads on rating (4.1 vs 2.3) and in-app purchases (none vs 2). Osmo Shape Builder's advantage is update cadence (every 3 months vs every 11 months). On price, ratings volume, 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. Osmo Shape Builder sells 2 one-off in-app purchases. Duck Duck Moose Reading HD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Duck Duck Moose Reading HD holds the better App Store score, 4.1 against 2.3. Both are backed by a comparable volume of ratings — 30 and 86 respectively. Written reviews point the same way: 43% of Duck Duck Moose Reading HD's written reviews are positive against 0% of Osmo Shape Builder's.

UpkeepUpdate frequency

Duck Duck Moose Reading HD ships an update every 11 months, Osmo Shape Builder every 3 months. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
Duck Duck Moose Reading HD versus Osmo Shape Builder: the parameters behind the verdict, then further details
ParameterDuck Duck Moose Reading HDOsmo Shape Builder
PriceFreeFree
Rating4.1 (30 ratings) — better2.3 (86 ratings)
Positive reviews43.5% of reviews — better0.0% of reviews
Number of ratings3086 — better
Update frequencyEvery 11 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPad
Requires iOS9.0 — better15.0
Further details — not scored
Size55 MB322 MB
Age rating4+4+
DeveloperDuck Duck Moose LLCTangible Play

Customer experience

Duck Duck Moose Reading HD

All ratings30 ratings
Positive76.7%
Neutral10.0%
Negative13.3%
Written reviews23 reviews
Positive43.5%
Neutral17.4%
Negative39.1%

Osmo Shape Builder

All ratings86 ratings
Positive30.2%
Neutral3.5%
Negative66.3%
Written reviews28 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Duck Duck Moose Reading HD

No in-app purchases

2 purchases

Osmo Shape Builder

One-time2
  • 3-day trial of Shape BuilderFree
  • Unlock Shape Builder$24.99

Questions

Is Duck Duck Moose Reading HD free?
Duck Duck Moose Reading HD is free to download, with no in-app purchases.
Is Osmo Shape Builder free?
Osmo Shape Builder is free to download, with in-app purchases available.
Which has better reviews, Duck Duck Moose Reading HD or Osmo Shape Builder?
Duck Duck Moose Reading HD is rated higher. Duck Duck Moose Reading HD averages 4.1 out of 5 from 30 ratings, while Osmo Shape Builder averages 2.3 from 86 ratings.
Do Duck Duck Moose Reading HD or Osmo Shape Builder have ads?
Neither Duck Duck Moose Reading HD nor Osmo Shape Builder shows ads.
Which is updated more often, Duck Duck Moose Reading HD or Osmo Shape Builder?
Duck Duck Moose Reading HD ships an update every 11 months, and Osmo Shape Builder every 3 months. Most recently, Duck Duck Moose Reading HD was updated on October 15, 2026 and Osmo Shape Builder on October 21, 2026.

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