Comparison

String Theory Game vs FnD Solutions

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

Head to head
About

String Theory Game

A vibrant puzzle game where you recreate patterns by drawing loops between pegs. Strategically place and overlap loops to match the target design with minimal moves. Offers handcrafted puzzles, daily challenges, and endless free play.

Highlights
  • Pattern matching puzzles
  • Loop drawing mechanics
  • Color-based loop filling
  • 60+ handcrafted puzzles
  • Daily challenges
  • Free play modes
Features
Read full description

String Theory is a colorful puzzle game about matching a given pattern by building it out of different colored shapes. String theory has 60+ handcrafted puzzles, daily challenges, and free play modes, making for hours of fun. Draw lines between pegs to create loops. The loops fill in with a different color depending on how many pegs they touch. Any loop that touches either three pegs or six pegs turns green. Any loop that touches either four pegs or eight pegs turns purple. Any loop that touches either five pegs or seven pegs turns spotted purple. Replicating the given pattern with as few loops as possible requires strategic placement and overlapping of loops. With dozens of handcrafted patterns to match, and thousands additional free play patterns, String Theory is a mind-bending game filled to the brim with tricky puzzles to get the gears turning! No ads, no microtransactions.

About

FnD Solutions

Features
Read full description

FnD Solutions allows you to plan and practice your moves before you make them. 1. Share an image to the app 2. Adjust the grid to match the screenshot 3. Plan your moves 4. Mark the squares 5. Practice your moves 6. Build custom maps Grid Mode Adjust the grid: - Position - Square size - Number of rows and cols - Save the grid settings - Load the grid settings for the same size map - Gridline color (via manual settings) Plan Mode: You can swap squares, copy squares, restore squares, or refresh the entire grid. Mark Mode This mode is required in order to practice your moves. You must first mark the squares: - Hero or Monster - Move slow speed (Chilled, Hamstrung, Immobilized) - Immovable trait - Push (number of) - Tumble (number of) - Special walker type (lava, water, rubble (number of), flying) - Terrain (lava, water, rubble, obstacle) Practice Mode - Change the timer - Tap your pivot hero first - Practice your move! Map Mode - Build your own maps with terrains and icons

Screenshots

String Theory Game4 screens
FnD Solutions4 screens

Verdict

The call

The clearest difference is iOS requirement: String Theory Game at 10.0 against FnD Solutions's 14.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 8 level
String Theory Game versus FnD Solutions: the parameters behind the verdict, then further details
ParameterString Theory GameFnD Solutions
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better14.0
Further details — not scored
Size43 MB73 MB
Age rating4+4+
DeveloperAndrew ViestaSAMUEL RIESTERER

In-app purchases

None

String Theory Game

No in-app purchases

None

FnD Solutions

No in-app purchases

Questions

Is String Theory Game free?
String Theory Game is free to download, with no in-app purchases.
Is FnD Solutions free?
FnD Solutions is free to download, with no in-app purchases.
Do String Theory Game or FnD Solutions have ads?
Neither String Theory Game nor FnD Solutions shows ads.
Which is updated more often, String Theory Game or FnD Solutions?
String Theory Game ships an update every 2 days, and FnD Solutions every 2 days. Most recently, String Theory Game was updated on October 9, 2026 and FnD Solutions on October 8, 2026.

Other comparisons