Comparison

Train Digger vs Simple Marble Run

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

Head to head
About

Train Digger

Control a mining train to dig for resources underground and use them to build and expand a vibrant city. Upgrade your train and unlock new engines to mine deeper and faster. Earn resources even while offline to grow your city at your own pace.

Highlights
  • Dig deep for resources
  • Build and customize your city
  • Upgrade trains and mining power
  • Idle earnings while offline
  • Satisfying animations
Features
Read full description

Train Digger – Idle Game Dig Deep, collect resources, and build your dream city! In Train Digger – Idle Game, you control a mining train that digs deep underground to uncover valuable materials. Deliver them to the surface and use them to construct and expand a bustling city above. Start small with a simple train and a quiet town. Upgrade your digging power, add more wagons, and unlock colorful, faster engines to mine deeper and faster. Every layer you dig brings new challenges and greater rewards. Use your resources to build roads, houses, towers, and landmarks, turning your city into a vibrant metropolis. Balance between upgrading your underground mining and expanding your city for maximum progress. Even when you’re offline, your trains keep working — earn resources and grow your city at your own pace! Features: Fun, easy-to-play digging & building gameplay Upgradeable trains and mining power Build and customize your city Idle earnings — progress anytime Colorful graphics & satisfying animations All aboard for the ultimate digging and building adventure! Download Train Digger – Idle Game now and start shaping your world, one tunnel at a time! -------------------------------------------------------------------------------- Subscription Terms: VIP Digging Here is the subscription period available in our game: Weekly subscription for $6.99 starting from first day. The offer unlocks the following features - Remove all ads - Get 10 gems every Week. - x2 Speed Up of Train. - Get Automove Train. Subscription and Renewal: The payment is charged to your account upon confirmation of purchase. The subscription is renewed automatically unless you turn it off 24 hours before the end of the current subscription period. The subscription automatically renews for the same duration as the original subscription (weekly). Account will be charged for renewal within 24 hours prior to the end of the current subscription period, and the renewal cost will be identified. Subscriptions may be managed by the user, and auto-renewal may be turned off by going to the user's Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. Canceling a Subscription: To cancel a subscription, you must do so through your account in the Store. This must be done at least 24 hours before the end of the current subscription period to avoid being charged for the next period. For more information, please visit https://support.apple.com/HT207865 If you have any question, feel free to contact us at support@sablostudio.com Privacy policy and Terms of use: https://sablostudio.com/privacy-policy.html Link to Subscription terms : https://sablostudio.com/TrainDigger_Subscription/TrainDigger.html

About

Simple Marble Run

Experience a calming marble game with customizable courses. Manipulate the flow with stoppers, pins, and throwing mechanics. Watch marbles collect and depart in a delightful cycle, offering a unique ASMR-like experience.

Highlights
  • Customizable marble courses
  • Interactive marble manipulation (stoppers, pins)
  • Marble throwing mechanic
  • Truck collection and departure cycle
  • Adjustable camera viewpoints
  • Soothing ASMR-like experience
Features
Read full description

A relaxing marble app where countless marbles roll and tumble across the course. Watching small marbles roll one after another is soothing and fun — you may even lose track of time just gazing at them. In this app, you can enjoy many different types of courses, from classic and simple layouts to unique and playful ones. The charm lies not only in watching the flow, but also in being able to add your own twists and enjoy different ways to play. The rolling marbles can be stopped, thrown, or redirected, allowing for all kinds of surprising moments. • With stoppers, you can hold back marbles and then release them all at once. It feels exciting to see a sudden rush of marbles flowing out together. • Place pins wherever you like to scatter the flow, split the marbles into unexpected paths, or even create small dead ends. Just a little change can transform the whole course. • With the throwing feature, you can tap the screen and toss a marble right to that spot. This lets you add marbles directly into the middle of the action. • At the goal, a truck waits to collect the marbles. Once enough marbles have piled up, a start button appears and the truck drives off, only for a new one to arrive. Watching the marbles leave together with the truck is a delightful part of the experience. • Along the course, you’ll also find camera buttons. Press them to switch the viewpoint and enjoy the marbles from a fresh angle. If you change the camera right before releasing a big group of marbles, the scene becomes even more thrilling to watch. There’s a special satisfaction in building up marbles and letting them flow all at once, in experimenting with setups that create surprising movements, or in simply enjoying the unexpected. Unlike real-life marble play, where preparing many marbles can be difficult, here you can easily enjoy “lots of marbles” and “special tricks” as many times as you like. The rolling sounds and movements are soothing and calming, almost like an ASMR experience that brings a sense of relaxation. You can play however you like — relax and watch quietly, or set up bold tricks and let the marbles rush in large numbers. A marble playground you can enjoy anytime, right on your phone. Roll them again and again, and find your own favorite way to play.

Screenshots

Train Digger4 screens
Simple Marble Run4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Marble Run at none against Train Digger's 12. Simple Marble Run also leads on review sentiment (17% vs 0%). Train Digger's advantage is rating (4.8 vs 4.4) and update cadence (every 2 weeks vs every 6 weeks). 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. Train Digger sells 12 in-app purchases, starting at $6.99 per 7 days. Simple Marble Run asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Train Digger holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 519 and 263 respectively. Written reviews complicate that: 0% of Train Digger's written reviews are positive against 17% of Simple Marble Run's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Train Digger ships an update every 2 weeks, Simple Marble Run every 6 weeks. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Train Digger versus Simple Marble Run: the parameters behind the verdict, then further details
ParameterTrain DiggerSimple Marble Run
PriceFreeFree
Rating4.8 (519 ratings) — better4.4 (263 ratings)
Positive reviews0.0% of reviews16.7% of reviews — better
Number of ratings519 — better263
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size349 MB193 MB
Age rating4+4+
DeveloperSablo Studiomonois Inc.

Customer experience

Train Digger

All ratings518 ratings
Positive95.2%
Neutral2.1%
Negative2.7%
Written reviews14 reviews
Positive0.0%
Neutral7.1%
Negative92.9%

Simple Marble Run

All ratings260 ratings
Positive83.5%
Neutral6.5%
Negative10.0%
Written reviews6 reviews
Positive16.7%
Neutral33.3%
Negative50.0%

In-app purchases

12 purchases

Train Digger

Subscriptions1
  • Vip Experience$6.997 Days
One-time11
  • 2x Truck Speed$0.99
  • 3x Earnings Forever$0.99
  • Automate Train Forever$0.99
Show 8 more
  • Speed Up$0.99
  • Pack of 10 Gems$1.99
  • Pack of 30 Gems$3.99
  • Pack of 50 Gems$5.99
  • Remove Forced Ads$9.99
  • Remove Ads Pack$10.99
  • Pack of 100 Gems$11.99
  • Pack of 200 Gems$19.99
None

Simple Marble Run

No in-app purchases

Questions

Is Train Digger free?
Train Digger is free to download, with in-app purchases available.
Is Simple Marble Run free?
Simple Marble Run is free to download, with no in-app purchases.
Which has better reviews, Train Digger or Simple Marble Run?
Train Digger is rated higher. Train Digger averages 4.8 out of 5 from 519 ratings, while Simple Marble Run averages 4.4 from 263 ratings.
Do Train Digger or Simple Marble Run have ads?
Both Train Digger and Simple Marble Run show ads.
Which is updated more often, Train Digger or Simple Marble Run?
Train Digger ships an update every 2 weeks, and Simple Marble Run every 6 weeks. Most recently, Train Digger was updated on October 28, 2026 and Simple Marble Run on October 30, 2026.

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