Comparison

CPI vs Rail Shift

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

Head to head
About

CPI

This game challenges your thinking skills to connect virtual pieces and create unique images. Enjoy a captivating puzzle experience with progressively complex levels, playable anywhere on your mobile device.

Highlights
  • Connect virtual puzzle pieces
  • Create unique images
  • Progressively complex levels
  • Playable anywhere
  • Drag and drop gameplay
  • 100 levels
Features
Read full description

► HAVE YOU GOT A TALENT FOR SEEING THE BIG PICTURE? Were you one of those children who could spend hours with their puzzles, whiling away a rainy afternoon or cold winter’s day putting together a 500-piece jigsaw of the Eifel Tower or London Bridge? Well, now you can revisit your childhood on your smartphone or tablet from anywhere in the world. Melt away from reality with this captivating puzzle game that challenges you to use your thinking skills to connect virtual pieces in real time and create unique images of increasing complexity. Arrange a variety of items to produce a pretty picture right on your screen, while developing your abilities as you progress through the levels. You’ll never be bored again! ► GET YOUR JIGSAW ON…ANYWHERE! We all agree that solving puzzles is great fun, but it’s hardly practical to take one on the plane, train or bus. You’d be sure to lose some pieces and almost certainly run out of table space. Thanks to CPI, though, you can now get your puzzling fix wherever you find yourself. On your lunch break at work, waiting at the doctor’s office, or even standing in line at the supermarket, this one-of-a-kind game allows you to dive right in anytime. ► NO MORE INTERRUPTIONS Remember when your mom would call you for dinner right in the middle of a puzzle? There’s nothing worse than being cut short when you’re in the zone. Instead of one picture with many pieces, CPI offers you many pictures with few pieces. Now, you never have to stop mid-puzzle – just quickly finish the level you’re on and pause until you can get back to work. It’s that simple! ► PICTURE THIS Enjoy the thrill of recreating original artworks that get more and more complex as you progress through the game. From cute, animated characters and delicious dishes to space rockets and even a classic arcade machine, marvel at the wide range of enchanting images that materialize before your eyes as you connect piece after piece in this enthralling test of your thinking skills. ► TURN IT UP TO 100 Don’t you just hate it when a game is too short? Sometimes it seems like you’ve barely started and it’s already finished. With 100 progressively difficult levels to keep you occupied, CPI is one puzzle game that won’t disappoint. Start simple with 2-3-piece furry friends and go all the way up to double-digit brain teasers as you think your way to a hundred. You’ll forget what boredom felt like with this highly-addictive, drag and drop puzzler. So, if you’re the sort of person who prefers thinking to racing, running or shooting, then this is just the game for you. CPI means no more pieces to lose, all you need is your mobile device, and you can jigsaw anywhere. Lose yourself in a magical world and kill time with your favorite pastime…all from the comfort of your phone or tablet. Privacy Policy: https://say.games/privacy-policy Terms of Use: https://say.games/terms-of-use

About

Rail Shift

Features
Read full description

Get ready to test your brain and reflexes in the ultimate railway switching puzzle game! Step into the shoes of a master railway dispatcher. Your mission is simple but challenging: control the junctions, switch the train tracks, and guide the cargo trains to their correct target factories. Sounds easy? Just wait! As the railway gets busier and the trains run faster, you'll need sharp eyes and quick thinking to prevent chaos. Sort the cargo by color and type, route them flawlessly, and never send a train to the wrong destination! Key Features: - Simple Intuitive Controls: Just tap the junctions to switch the tracks. Easy to learn, but hard to master! - Challenging Puzzle Levels: Navigate through a variety of complex track layouts and factory mazes. The challenge grows with every level you clear! - Sort & Deliver: Match the cargo and containers with the correct target factories based on colors and materials. - Fast-Paced Strategy: Manage the railway efficiently, prevent collisions, and make quick decisions as the game speeds up. - Play Offline: No Wi-Fi? No problem! Enjoy the game anytime, anywhere, completely offline. Do you have what it takes to run the ultimate logistics empire? Keep the trains moving, avoid delays, and make sure every factory gets its cargo on time!

Screenshots

CPI4 screens
Rail Shift4 screens

Verdict

The call

The clearest difference is in-app purchases: CPI at none against Rail Shift's 1. Rail Shift's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement 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. Rail Shift sells 1 one-off in-app purchase. CPI asks for nothing beyond the download.

UpkeepUpdate frequency

CPI ships an update every 2 months, Rail Shift weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
CPI versus Rail Shift: the parameters behind the verdict, then further details
ParameterCPIRail Shift
PriceFreeFree
Rating4.5 (12K ratings) — better—
Positive reviews80.4% of reviews—
Number of ratings12K — better—
Update frequencyEvery 2 monthsWeekly — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size326 MB30 MB
Age rating4+4+
DeveloperSayGames LTDYuttana Suttasupa

Bugs and requests

CPI

Reported bugs

1 issue
  • Levels repeating after a certain point

Requested features

2 requests
  • More levels and puzzles
  • No ads option

Rail Shift

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

CPI

No in-app purchases

1 purchases

Rail Shift

One-time1
  • Remove Ads$0.99

Questions

Is CPI free?
CPI is free to download, with no in-app purchases.
Is Rail Shift free?
Rail Shift is free to download, with in-app purchases available.
Do CPI or Rail Shift have ads?
Both CPI and Rail Shift show ads.
Which is updated more often, CPI or Rail Shift?
CPI ships an update every 2 months, and Rail Shift weekly. Most recently, CPI was updated on November 4, 2026 and Rail Shift on October 31, 2026.

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