Comparison

Boulderoll vs Junction Nine

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

Head to head
About

Boulderoll

Strategically arrange gears to build an army and economy. Deploy your forces to push a massive boulder and crush the enemy's base. Adapt your setup to survive waves of enemies and explore new worlds.

Highlights
  • Gear management strategy
  • Boulder pushing combat
  • Wave survival
  • World exploration
  • Easy to learn, hard to master
Features
Read full description

Build your army, crush the enemy! Arrange your soldiers, spells, weapons, and economy gears to build the perfect setup, then watch your strategy come to life! Your troops spawn, grab a massive boulder, and roll it straight into the enemy's base. What's inside: -Bag management strategy: Every gear you place matters. Mix and match soldiers, spells, weapons, and economy pieces to find your winning combo. -Push the boulder, win the fight: Send your army forward, roll the boulder into enemy territory, and bring their base crashing down. -Survive the waves: Enemies keep coming. Adapt your setup and outsmart every single wave. -Explore new worlds: Clear levels, unlock fresh challenges, and battle across a growing map. -Easy to learn, tough to master: Pick it up in seconds, keep strategizing for hours. Think you can build the ultimate gear setup?

About

Junction Nine

A logic puzzle game based on a mathematical principle where you spin sections of a 3x3 grid to connect tiles. Challenge yourself to solve each puzzle in the fewest possible moves, with every puzzle having a proven minimum solution.

Highlights
  • Spin grid sections 180 degrees
  • Solve puzzles with proven minimum spins
  • No ads or timers
  • Light and dark themes
  • Optional haptic feedback and sound
  • Multiple puzzle collections
Features
Read full description

Behind Junction Nine is a published mathematical result: in a 3×3 grid where any rectangle can be spun 180 degrees, every arrangement can be returned to order - and never in more than nine spins. We designed the puzzles and independently calculated the fewest spins each one takes. See if you can match the minimum. HOW IT WORKS Spin any rectangular section of the grid 180°. Remember - squares count as rectangles. A move can shift several pieces at once, so fixing one connection can disrupt another. Rotate tiles until every connection lines up. Then keep going: can you match the fewest possible spins? Every puzzle has a proven minimum. ORIGIN — FREE Start with Origin, a collection that introduces the mechanic and builds from simple puzzles to genuinely tricky ones. TRANSFER Unlock a second collection with a new set of puzzles to master. DESIGNED FOR THINKING - No ads - No timers or penalties - Optional haptic feedback and sound - Light and dark themes - More puzzle packs planned Quick to learn. Surprisingly hard to perfect.

Screenshots

Boulderoll4 screens
Junction Nine4 screens

Verdict

The call

The clearest difference is review sentiment: Junction Nine at 100% against Boulderoll's 33%. Junction Nine also leads on rating (5.0 vs 3.3) and update cadence (every 5 days vs every 2 months). Boulderoll's advantage is in-app purchases (none vs 2). 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. Junction Nine sells 2 one-off in-app purchases. Boulderoll asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Junction Nine holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 33% of Boulderoll's written reviews are positive against 100% of Junction Nine's.

UpkeepUpdate frequency

Boulderoll ships an update every 2 months, Junction Nine every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Boulderoll versus Junction Nine: the parameters behind the verdict, then further details
ParameterBoulderollJunction Nine
PriceFreeFree
Rating3.3 (3 ratings)5.0 (3 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings33
Update frequencyEvery 2 monthsEvery 5 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size179 MB57 MB
Age rating12+4+
DeveloperBrew GamesBricks and Chips, LLC

Customer experience

Boulderoll

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Junction Nine

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Boulderoll

No in-app purchases

2 purchases

Junction Nine

One-time2
  • Transfer Puzzles$2.99
  • Interchange Puzzles$2.99

Questions

Is Boulderoll free?
Boulderoll is free to download, with no in-app purchases.
Is Junction Nine free?
Junction Nine is free to download, with in-app purchases available.
Which has better reviews, Boulderoll or Junction Nine?
Junction Nine is rated higher. Boulderoll averages 3.3 out of 5 from 3 ratings, while Junction Nine averages 5.0 from 3 ratings.
Do Boulderoll or Junction Nine have ads?
Both Boulderoll and Junction Nine show ads.
Which is updated more often, Boulderoll or Junction Nine?
Boulderoll ships an update every 2 months, and Junction Nine every 5 days. Most recently, Boulderoll was updated on November 5, 2026 and Junction Nine on October 31, 2026.

Other comparisons