Comparison

Planar Knots vs One Left

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

Head to head
About

Planar Knots

Untangle complex line diagrams by strategically moving nodes to eliminate intersections. Earn stars by solving puzzles efficiently and maintain your daily challenge streak. Customize your experience with unlockable themes and track your progress.

Highlights
  • Untangle puzzles by moving nodes
  • Optimize solutions for more stars
  • Daily Challenge with streak tracking
  • Points system for unlocks
  • Stats and progress tracking
  • Share progress with friends
  • Customizable themes
Features
Read full description

Planar Knots is a clean, satisfying puzzle game about turning tangled messes into perfect diagrams. Drag the nodes. Watch the lines shift. Remove every line crossing. Solve puzzles in fewer moves to earn more stars and points, then come back each day to keep your Daily Challenge streak alive. Features Untangle puzzles by moving nodes until no lines intersect Move counter + star ratings to optimize solutions Daily Challenge with fresh puzzles and streak tracking Points system to unlock themes, hints, or skip levels Stats & progress tracking by level pack or across the whole game Share progress and Daily Challenge results with friends Node-based level browsing by difficulty and node count Themes to customize the look and feel Optional ads (including rewarded unlocks). Optional in-app purchases: Remove Ads, Theme Unlocks, or All-Themes Bundle. Support: support@orangepeak.dev

About

One Left

Read full description

One Left brings the timeless Peg Solitaire puzzle to your iPhone, iPad, and Mac with a beautiful modern design. THE CHALLENGE Start with 32 pegs and one empty space. Jump pegs over each other to eliminate them. Your goal: leave just ONE peg remaining - ideally in the center! FEATURES • Clean, intuitive interface designed for all ages • Universal app - play on iPhone, iPad, and Mac • Multiple color themes to personalize your board • Global leaderboard - compete for the fastest times • Helpful hints when you get stuck • Interactive tutorial for beginners • Track your statistics and improve your strategy • Haptic feedback for satisfying gameplay (iOS) • No ads interrupting your game PERFECT FOR • Puzzle lovers seeking a mental challenge • Quick brain training sessions • Relaxing gameplay without time pressure • Players who enjoy classic board games The Peg Solitaire puzzle has been enjoyed for centuries. Now experience it reimagined for the modern era. Can you solve it with just ONE LEFT?

Screenshots

Planar Knots4 screens
One Left4 screens

Verdict

The call

The clearest difference is in-app purchases: One Left at none against Planar Knots's 8. One Left also leads on ads (none vs shown). Planar Knots's advantage is update cadence (every 3 days vs monthly) and iOS requirement (15.0 vs 17.6). 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. Planar Knots sells 8 one-off in-app purchases. One Left asks for nothing beyond the download.

UpkeepUpdate frequency

Planar Knots ships an update every 3 days, One Left monthly. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Planar Knots versus One Left: the parameters behind the verdict, then further details
ParameterPlanar KnotsOne Left
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 days — betterMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS15.0 — better17.6
Further details — not scored
Size171 MB14 MB
Age rating4+4+
DeveloperOrange Peak StudiosAlexandre Brotto Rangel da Silva

In-app purchases

8 purchases

Planar Knots

One-time8
  • Unlock Neon Night Theme$0.99
  • Unlock Groovy Theme$0.99
  • Unlock Pixelated Theme$0.99
Show 5 more
  • Unlock Candyland Theme$0.99
  • Unlock Workshop Theme$0.99
  • Remove Ads$2.99
  • Unlock All Themes$2.99
  • Remove Ads / Unlock Themes Bundle$4.99
None

One Left

No in-app purchases

Questions

Is Planar Knots free?
Planar Knots is free to download, with in-app purchases available.
Is One Left free?
One Left is free to download, with no in-app purchases.
Do Planar Knots or One Left have ads?
Planar Knots shows ads; One Left does not.
Which is updated more often, Planar Knots or One Left?
Planar Knots ships an update every 3 days, and One Left monthly. Most recently, Planar Knots was updated on November 5, 2026 and One Left on October 28, 2026.

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