Comparison

X is for Xavier vs WWF Explore!

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

Head to head
About

X is for Xavier

An interactive old-fashioned book app designed to teach and delight young children. It features riddles, rhymes, music, animal sounds, and hidden treasures to engage children and parents. Children can interact with animals to reveal verses and discover classical music.

Highlights
  • Interactive animal characters
  • Riddles and rhymes
  • Original orchestrated music
  • Animal sound effects
  • Hidden treasures
  • Alphabet learning
Features
Read full description

X is for Xavier is a sweet little old fashion book that will teach and delight!  Filled with riddles and rhymes,  music and animal sounds, hidden treasures and alphabets and fun for parent and child! Children have to move the animals to read the whole verse. Each animal has its own original orchestrated music bringing every page to life and introducing your child to classical music. A guaranteed favorite for the very young child and up to kindergarten age! Play alone or with parent or other children.

About

WWF Explore!

Embark on interactive expeditions to ecologically diverse regions, learning about endangered species and their habitats through engaging stories and animations. Discover unique animals with detailed journal entries and collect memories in a keepsake photo gallery.

Highlights
  • Interactive expeditions
  • Endangered animal profiles
  • Detailed species information
  • Keepsake photo gallery
  • Educational stories and animations
Features
Read full description

Take a journey with WWF Explore! The app combines exciting animation and entertaining stories to highlight the places, species and people WWF works to protect. Follow a group of four students and their teacher as they journey to five of the world’s most ecologically diverse regions—Africa, Amazon, Arctic, China and Himalayas—with interactive scenes that bring each spot’s biodiversity to life. Features • Interactive expeditions featuring endangered animals and the places they call home. • Detailed species information with photos and illustrations in the form of “journal entries.” • A keepsake photo gallery of the animals spotted along the way. About World Wildlife Fund For 50 years, WWF’s mission has been to create a future in which people live in harmony with nature. A core part of that mission is saving wildlife from threats like poaching, habitat loss and overuse of natural resources. This important work doesn’t just help wild animals; it also contributes to people’s health and well-being. By conserving species and their habitats, we can also help to ensure we have a thriving, healthy planet with forests that slow climate change and oceans that provide more than one-sixth of the world’s food.

Screenshots

X is for Xavier4 screens

Verdict

The call

The clearest difference is review sentiment: X is for Xavier at 100% against WWF Explore!'s 27%. X is for Xavier also leads on in-app purchases (none vs 3) and rating (4.5 vs 4.1). WWF Explore!'s advantage is update cadence (every 6 weeks vs every 61 months) and ratings volume (22 vs 2). On price, ads and monetization model 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. WWF Explore! sells 3 one-off in-app purchases. X is for Xavier asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

X is for Xavier holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: WWF Explore! has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of X is for Xavier's written reviews are positive against 27% of WWF Explore!'s.

UpkeepUpdate frequency

X is for Xavier ships an update every 61 months, WWF Explore! every 6 weeks. The most recent releases landed on September 29, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
X is for Xavier versus WWF Explore!: the parameters behind the verdict, then further details
ParameterX is for XavierWWF Explore!
PriceFreeFree
Rating4.5 (2 ratings) — better4.1 (22 ratings)
Positive reviews100.0% of reviews — better26.7% of reviews
Number of ratings222 — better
Update frequencyEvery 61 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS9.06.0 — better
Further details — not scored
Size127 MB554 MB
Age rating4+4+
DeveloperRabbit HillWorld Wildlife Fund

Customer experience

X is for Xavier

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

WWF Explore!

All ratings22 ratings
Positive72.7%
Neutral13.6%
Negative13.6%
Written reviews15 reviews
Positive26.7%
Neutral46.7%
Negative26.7%

In-app purchases

None

X is for Xavier

No in-app purchases

3 purchases

WWF Explore!

One-time3
  • Arctic Expedition$0.99
  • Himalayas Expedition$0.99
  • Africa Expedition$0.99

Questions

Is X is for Xavier free?
X is for Xavier is free to download, with no in-app purchases.
Is WWF Explore! free?
WWF Explore! is free to download, with in-app purchases available.
Which has better reviews, X is for Xavier or WWF Explore!?
X is for Xavier is rated higher. X is for Xavier averages 4.5 out of 5 from 2 ratings, while WWF Explore! averages 4.1 from 22 ratings.
Do X is for Xavier or WWF Explore! have ads?
Neither X is for Xavier nor WWF Explore! shows ads.
Which is updated more often, X is for Xavier or WWF Explore!?
X is for Xavier ships an update every 61 months, and WWF Explore! every 6 weeks. Most recently, X is for Xavier was updated on September 29, 2026 and WWF Explore! on October 14, 2026.

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