Comparison

NextDigit vs Rube’s Lab

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

Head to head
About

NextDigit

Features
Read full description

Think fast. Solve faster. Next Digit is a fast-paced math puzzle game that pushes your mental speed and accuracy to the limit. Tackle quick math challenges, improve your reaction time, and build your streak as the difficulty increases. Features: • Smooth and responsive gameplay • Multiple difficulty levels • Instant feedback for every answer • High score tracking • Minimal, distraction-free design Perfect for quick sessions or long streaks, Next Digit keeps your brain active and engaged.

About

Rube’s Lab

Features
Read full description

Welcome to Rube’s Lab — a physics puzzle game where creativity beats brute force. Build clever contraptions, trigger satisfying chain reactions, and solve levels using logic, timing, and real physics. Create, test, improve Every level is a small laboratory. Place objects, connect mechanisms, and experiment until your setup works. Want a clean solution or a wild one? Both are valid. Features Physics-based puzzle gameplay with realistic interactions Contraption building: combine tools to create chain reactions Hundreds of ways to solve: experiment with multiple solutions Smart difficulty curve: approachable early levels, brainy later challenges Hint system when you’re stuck (optional) Satisfying reactions: knock, roll, bounce, push, trigger! For fans of If you enjoy physics puzzles, logic games, brain teasers, and creative building, you’ll feel at home in Rube’s Lab. Download and start inventing.

Screenshots

NextDigit4 screens
Rube’s Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: NextDigit at none against Rube’s Lab's 7. NextDigit also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price 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. Rube’s Lab sells 7 one-off in-app purchases. NextDigit asks for nothing beyond the download.

Scorecard3 real differences · 2 level
NextDigit versus Rube’s Lab: the parameters behind the verdict, then further details
ParameterNextDigitRube’s Lab
PriceFreeFree
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size21 MB114 MB
Age rating4+4+
DeveloperBK KejeraVolodymyr Bouland

In-app purchases

None

NextDigit

No in-app purchases

7 purchases

Rube’s Lab

One-time7
  • 20 Gems$0.99
  • 100 Gems$1.99
  • 200 Gems$2.99
Show 4 more
  • Starter Pack$2.99
  • Pro Version$2.99
  • 500 Gems$3.99
  • 1000 Gems$4.99

Questions

Is NextDigit free?
NextDigit is free to download, with no in-app purchases.
Is Rube’s Lab free?
Rube’s Lab is free to download, with in-app purchases available.
Do NextDigit or Rube’s Lab have ads?
Rube’s Lab shows ads; NextDigit does not.

Other comparisons