Comparison

Star Hoppers vs DaDa Call

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

Head to head
About

Star Hoppers

Explore the cosmos with interactive star charts, blending ancient Chinese and Western astronomy. Discover constellations through engaging audio stories and augmented reality.

Highlights
  • Interactive digital star chart
  • Ancient Chinese and Western star charts
  • Augmented Reality (AR) mode
  • Bilingual audio recordings of constellation stories
  • Astronomical event calendar
  • Stargazing basics
Features
Read full description

Star Hoppers won the “Smart Mobility (Smart Tourism) Certificate of Merit” in the “Hong Kong ICT Awards 2019”. Star Hoppers integrates the Chinese and Western star charts with information of astronomical events and related activities while telling the stories of constellations to you with its audio recordings. With its digital star chart, you will find that people from the ancient Chinese and Western cultures created different constellation and asterism system due to their different associations with the stars. The star chart has three different operation modes: the Virtual Reality (VR) mode simulates the star field according to the location and orientation data obtained from the device to help you identify celestial objects and constellations; the Augmented Reality (AR) mode marks the celestial objects, constellations and asterisms on your camera image in real-time by employing the augmented reality technology; the Manual (M) mode allows you to navigate the star chart at will. Tapping on any constellations, planets, the Sun, Moon or Three Enclosures and Twenty-eight Mansions, you can listen to the recorded stories of the constellations or celestial objects. Star Hoppers also introduces the basics of stargazing to promote the proper manner of stargazing as well as to help the novice to identify the constellations. You may also select the Calendar function to receive the latest information of various astronomical events and activities provided by the Hong Kong Space Museum. You may use the Share function with third party apps to invite your friends to join the activities and share the fun of stargazing with you! Features of the app: * Help users to learn and identify celestial objects and constellations with the realtime generated digital star chart at any locations in the world. * Display unique ancient Chinese star chart with the complete ancient Chinese asterism system including the Three Enclosures, twenty-eight lunar mansions and more. * Playback more than 200 bilingual audio recordings of basic information of celestial objects and asterisms in the Western and ancient Chinese cultures. * Employ augmented reality technology to label celestial objects and constellations on your screen instantaneously when you point the camera of your mobile device to the sky. * Provide the latest news on the coming Hong Kong Space Museum events such as astronomical films, lectures, stargazing activities etc. * Share astronomical events and activities information to your friends easily and invite them to join with you.

About

DaDa Call

Features
Read full description

Dada turns long-distance family calls into a warm daily ritual. Made for families living far apart — a kid in one country, a parent or grandparent in another. Pair two iPhones with a simple 6-character code and every call becomes something to look forward to. No accounts, no sign-up. HOW IT WORKS • Pair once — create a connection, share the code, done. • One-tap calls — big friendly buttons start a FaceTime call to your person. • Earn coins — every call earns virtual coins in your family's own currency. Longer calls and streaks earn bonuses, and parents set the rules. • Write diaries — capture a little memory after each call. • Watch your buddy grow — a companion that grows with your call streak. • Question of the day — a fresh conversation starter, so there's always something to talk about. • Visit countdown — counting the days until you meet again. • Gift wishlist — kids save coins toward real rewards, with smart gift ideas by age. • Keepsake report — print a beautiful record of your calls together. MADE FOR FAMILIES • English and 繁體中文 • One kid can pair with Dad, Grandma and more — each connection keeps its own balance • No ads, no accounts, no third-party analytics. Your family's data stays yours. Coins are virtual — a playful family reward system, not real money. Note: calls use FaceTime, so both sides need an iPhone or iPad.

Screenshots

Star Hoppers4 screens
DaDa Call4 screens

Verdict

The call

The clearest difference is update cadence: DaDa Call at every 2 months against Star Hoppers's every 25 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Star Hoppers ships an update every 25 months, DaDa Call every 2 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Star Hoppers versus DaDa Call: the parameters behind the verdict, then further details
ParameterStar HoppersDaDa Call
PriceFreeFree
Rating4.5 (4 ratings) — better—
Positive reviews78.6% of reviews—
Number of ratings4 — better—
Update frequencyEvery 25 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size59 MB9 MB
Age rating4+4+
DeveloperHKSPMBenjamin Cheung

In-app purchases

None

Star Hoppers

No in-app purchases

None

DaDa Call

No in-app purchases

Questions

Is Star Hoppers free?
Star Hoppers is free to download, with no in-app purchases.
Is DaDa Call free?
DaDa Call is free to download, with no in-app purchases.
Do Star Hoppers or DaDa Call have ads?
Neither Star Hoppers nor DaDa Call shows ads.
Which is updated more often, Star Hoppers or DaDa Call?
Star Hoppers ships an update every 25 months, and DaDa Call every 2 months. Most recently, Star Hoppers was updated on November 1, 2026 and DaDa Call on October 31, 2026.

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