Comparison

Train Kit vs Hoopa City 2

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

Head to head
About

Train Kit

Build immersive 3D train worlds by easily dragging and dropping track tiles. Add trains, tunnels, and scenery to create unique layouts. Experience your creations from the driver's seat.

Highlights
  • Drag-and-drop track building
  • Real-time train simulation
  • Customizable train creation
  • Immersive 3D environments
  • Train driver perspective
  • Add tunnels, bridges, and scenery
Features
Read full description

Hop on board! Train Kit lets you build immersive little train worlds. EASY TO BUILD Simply add and move track tiles by dragging them with your finger while trains run around you. There’s no need to switch between modes – everything is on one screen. GET CREATIVE No rules, but endless options. Add trains, tunnels, junctions and scenery in a totally open-ended world. 3D Immerse yourself in a fully 3D world. You can even put yourself in the driver’s seat and see what it’s like to drive around your track from the train’s cabin. FEATURES - Add track tiles which snap together in a grid - Tunnels and bridges - Switching tracks allow your trains to take different routes - Drop trains and carriages onto your track - Create your own unique train by mixing carriages together - Simple train controls allow you speed up, slow down or reverse your trains - Adding scenery and building objects brings your world to life - Train driver view allows you to whizz through your world - No in-app purchases - No adverts

About

Hoopa City 2

Design and explore your dream city in a vibrant 3D world. Combine building elements to create over 60 unique structures, from apartments to airports. Play inside your creations and discover secret combinations.

Highlights
  • Build in full 3D
  • Combine 8 world-building elements
  • Unlock over 60 buildings
  • Explore inside buildings
  • Dress-up citizens
  • Switch between Night and Day Mode
  • Save multiple cities
Features
Currently charting
Read full description

**From the makers of the award winning app Dr. Panda Restaurant 2. Build the city of your dreams! Combine materials to make houses, roads and more! HOOPA CITY IS BACK! Hoopa City is bigger and better than ever! Create a thriving metropolis with sky-high apartments and shopping malls, or a paradise beach retreat with harbors over sparkling waters! BUILD THE CITY OF YOUR DREAMS! Build any type of city you dream up, and explore it in a beautiful 3D world! Combine 8 different world-building elements to make train tracks, homes, shops, airports and more! DISCOVER, EXPERIMENT AND UNLOCK! Each building takes a special combination to discover and unlock, so you have the freedom to experiment and build in any way you want! Can you find all of the secret combinations? SO MANY WAYS TO PLAY IN YOUR CITY! Explore the city you've created by playing inside of each building. Go shopping in the mall, get married at the City Hall or ride on a dinosaur in the museum! Hoopa City 2 is designed with kids in mind, but people of all ages can play and have fun! KEY FEATURES: ● Build bigger than ever in full 3D! ● Tap, rotate and pinch to zoom to see your city from all different angles. ● Experiment with 8 world-building elements to discover and unlock over 60 buildings! ● Explore the inside of buildings and play with the surroundings ● Dress-up your citizens with fun clothes and accessories! ● Switch between Night and Day Mode and watch your city light up! ● Hoopa's Building Book will keep track of what you've unlocked and how to build it. ● Save over 20 cities, so you can always try something new! ***Requires iPad 2 or newer, iPhone 5 or newer to run*** Privacy Policy As a designer of kids’ games, we understand how important privacy is in this modern, digital world. You can read our privacy policy here: http://www.drpanda.com/privacy About Dr. Panda Dr. Panda is a developer of games for kids. We develop games with educational values that help kids learn about the world. All of our games are safe and do not contain inappropriate content. If you’d like to know more about us and how we design games for kids, visit our website www.drpanda.com/about. If you have any questions, feel free to send us an email at support@drpanda.com or contact us on Facebook (www.facebook.com/drpandagames) or Twitter (www.twitter.com/drpandagames) or Instagram (www.instagram.com/drpandagames).

Screenshots

Train Kit4 screens
Hoopa City 24 screens

Verdict

The call

The clearest difference is rating: Train Kit at 4.6 against Hoopa City 2's 4.3. Train Kit also leads on ratings volume (2.4K vs 221). Hoopa City 2's advantage is price ($3.99 vs $6.99) and chart position (#70 vs unranked). On review sentiment, update cadence, ads and in-app purchases 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

Train Kit costs $6.99 and Hoopa City 2 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Train Kit holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Train Kit has 2.4K ratings behind it against 221, so its average is the more settled of the two. Written reviews point the same way: 83% of Train Kit's written reviews are positive against 79% of Hoopa City 2's.

UpkeepUpdate frequency

Train Kit ships an update every 3 months, Hoopa City 2 every 2 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 6 level
Train Kit versus Hoopa City 2: the parameters behind the verdict, then further details
ParameterTrain KitHoopa City 2
Price$6.99$3.99 — better
Rating4.6 (2.4K ratings) — better4.3 (221 ratings)
Positive reviews82.9% of reviews — better78.8% of reviews
Number of ratings2.4K — better221
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#70 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.68.0 — better
Further details — not scored
Size108 MB196 MB
Age rating4+4+
DeveloperPhd Apps LLCDr. Panda Ltd

Customer experience

Train Kit

All ratings2,380 ratings
Positive89.1%
Neutral5.0%
Negative5.8%
Written reviews123 reviews
Positive82.9%
Neutral5.7%
Negative11.4%

Hoopa City 2

All ratings222 ratings
Positive81.5%
Neutral5.4%
Negative13.1%
Written reviews113 reviews
Positive78.8%
Neutral5.3%
Negative15.9%

User reviews

Train Kit

From 2.4K App Store ratings

What we love

  • 👍 Fun, simple, and satisfying game
  • 🚀 Easy to use and intuitive controls
  • 🎨 Allows for creativity and imagination
  • 💫 Engaging 3D visuals and animations
  • 🎢 Enjoyable for both kids and adults

Room to improve

  • 🐛 Frequent crashes and bugs
  • 🔍 Limited world/map size
  • 🚧 Lack of save/load functionality
  • 🚂 Limited train and vehicle selection
  • 🔧 Some issues with piece placement and controls

Hoopa City 2

From 221 App Store ratings

What we love

  • 🎨 Creative building and city customization
  • 🏠 Ability to enter and explore buildings
  • 👶 Engaging for children across multiple age groups
  • 🎮 Fun gameplay mechanics and combinations
  • 📱 Works offline without WiFi

Room to improve

  • 🐛 Game progress deletion/data loss issues
  • ⚠️ Flashing/epilepsy-triggering visuals
  • 🔊 Sound not working properly
  • ⏱️ Game becomes repetitive after unlocking all buildings
  • 📱 UI issues on iPhone X/XS (bottom menu placement)

Bugs and requests

Train Kit

Reported bugs

5 issues
  • Trains flying out of the screen
  • Inability to place certain track pieces
  • Pieces moving unexpectedly when switching tracks
  • Crashes and freezes, especially on older devices
  • Touch controls not always registering accurately

Requested features

6 requests
  • Add more trains, cars, and other vehicles
  • Expand world/map size and allow for more building
  • Implement save/load functionality to preserve creations
  • Add more building pieces, decorations, and customization options
  • Improve stability and fix crashes/bugs
Show 1 more
  • Introduce new gameplay modes and challenges

Hoopa City 2

Reported bugs

10 issues
  • Cities and progress disappearing after closing app
  • Flashing graphics causing seizures
  • Sound not functioning despite settings enabled
  • Age verification preventing game access
  • Characters floating in air after building entry
Show 5 more
  • Game lag and stuttering on older devices
  • White blank screen on startup
  • Helicopter water place not building
  • Game crashes when interacting with certain objects
  • UI elements unreachable on certain device sizes

Requested features

13 requests
  • Ability to drive cars, boats, trains, and airplanes
  • Multi-floor building access (apartments, malls, etc.)
  • More buildings and structures to unlock
  • Hoopa City 3 sequel
  • Seasons and weather effects (snow, rain)
Show 8 more
  • Clothing stores and additional shops
  • Larger world map and more space
  • Save building customizations inside structures
  • Hint system for difficult building combinations
  • More characters and pets
  • Bigger skyscrapers and landmarks
  • Ability to control vehicles
  • Game save backup feature

In-app purchases

None

Train Kit

No in-app purchases

None

Hoopa City 2

No in-app purchases

Questions

Is Train Kit free?
Train Kit costs $6.99, with no in-app purchases.
Is Hoopa City 2 free?
Hoopa City 2 costs $3.99, with no in-app purchases.
Which has better reviews, Train Kit or Hoopa City 2?
Train Kit is rated higher. Train Kit averages 4.6 out of 5 from 2.4K ratings, while Hoopa City 2 averages 4.3 from 221 ratings.
Do Train Kit or Hoopa City 2 have ads?
Neither Train Kit nor Hoopa City 2 shows ads.
Which is updated more often, Train Kit or Hoopa City 2?
Train Kit ships an update every 3 months, and Hoopa City 2 every 2 months. Most recently, Train Kit was updated on October 26, 2026 and Hoopa City 2 on October 29, 2026.

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