Comparison

Radiant Grid vs Substrate Entity

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

Head to head
About

Radiant Grid

A calming puzzle game featuring 99 handcrafted levels with increasing difficulty. Players tap squares to light a path across a grid, following number clues to solve each challenge. Enjoy a soothing soundtrack and a beautiful, minimalist design.

Highlights
  • 99 challenging handcrafted levels
  • Mindful and relaxing gameplay
  • Ambient soundtrack
  • Simple tap controls
  • Increasing difficulty curve
Features
Read full description

A mindful, relaxing puzzle game with 99 increasingly challenging, handcrafted levels. Simple to play but not so simple to complete! Immerse yourself in the soothing ambient soundtrack and focus on solving the grid. “Quite simply one of the most beautiful puzzle games I have ever played. The design is simple, yet aesthetically pleasing, and the soundtrack is a wonderful sonic wash that perfectly compliments the gameplay. The puzzles themselves are well pitched. The introductory rounds are small enough to lend themselves to both a studied approach or random tapping. They gradually ramp up the difficulty level, and with so many to work through, there is great value for money to be had." - an App Store customer from the UK. How to play: Start at the origin and tap the squares to light a path across the grid. There’s just one rule! The numbers scattered across the grid tell you how many squares you must light up around each one to solve the puzzle… and that’s where the skill comes in!

About

Substrate Entity

Features
Read full description

One row every beat. It forks every beat. You are a charge running an etched plate. The trace splits under you, and some of the branches it offers are already finished. Nothing marks them. You read ahead, you pick a side, you keep moving. Press the left or the right of the glass. That is the whole game. SEVEN STRATA Each one runs faster and darker than the one above it. When the colour turns, the tempo turns with it. CHARGE Every row costs you. The bright pads pay it back and stack your multiplier. The branch that keeps you alive and the branch that keeps you fed are rarely the same branch. NO ADS No timers, no energy, no currency, no in-app purchases, no account. It runs entirely on your phone. Portrait, one thumb. Sound, haptics and motion each turn off. More from Dro1d Labs: Pixel Pigeon for the stubborn life of a city bird, and War Pigeon for tactical stealth after dark. Privacy Policy: https://dro1d.org/substrate.html#privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Radiant Grid4 screens
Substrate Entity4 screens

Verdict

The call

The clearest difference is price: Substrate Entity at Free against Radiant Grid's $1.99. Substrate Entity also leads on update cadence (every 3 days vs every 6 months). Radiant Grid's advantage is device support (3 vs 1) and iOS requirement (18.6 vs 26.0). On 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

Substrate Entity is free to download; Radiant Grid costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Radiant Grid ships an update every 6 months, Substrate Entity every 3 days. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
Radiant Grid versus Substrate Entity: the parameters behind the verdict, then further details
ParameterRadiant GridSubstrate Entity
Price$1.99Free — better
Rating4.2 (15 ratings) — better—
Positive reviews85.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 6 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS18.6 — better26.0
Further details — not scored
Size53 MB11 MB
Age rating4+4+
DeveloperOpen Planet SoftwareDRO1D LABS LIMITED

In-app purchases

None

Radiant Grid

No in-app purchases

None

Substrate Entity

No in-app purchases

Questions

Is Radiant Grid free?
Radiant Grid costs $1.99, with no in-app purchases.
Is Substrate Entity free?
Substrate Entity is free to download, with no in-app purchases.
Do Radiant Grid or Substrate Entity have ads?
Neither Radiant Grid nor Substrate Entity shows ads.
Which is updated more often, Radiant Grid or Substrate Entity?
Radiant Grid ships an update every 6 months, and Substrate Entity every 3 days. Most recently, Radiant Grid was updated on October 1, 2026 and Substrate Entity on October 3, 2026.

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