Edge Catalyst vs Planet Merger
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Edge Catalyst
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Edge Catalyst is a puzzle game about clearing a grid with elemental beams. Water beats fire, fire beats air, air beats earth, earth beats water. Fire a beam with the element that beats a block and the line clears. Each board hands you a fixed set of beams, so the puzzle is working out the order. • 237 verified boards • Endless mode, newly generated every run and rising in difficulty • Daily challenge — the same board for everyone in the world, every day • Stacked blocks: clear the top layer to reveal what waits beneath • Beams run edge to edge along rows, columns and diagonals • Three stars for solving in the fewest shots • Element symbols for colorblind players • No timer, no lives • Plays offline, no account required
Planet Merger
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Drop a planet. Watch it fall, collide, and merge into something bigger. Planet Merger is a physics puzzle about building the solar system one collision at a time. When two identical planets touch, they merge into the next one up — Pluto becomes Mercury, Mercury becomes the Moon, and on it goes. The board fills faster than you expect, the physics never quite behaves, and one well-placed drop can set off a chain reaction that clears half the screen. MERGE ALL THE WAY TO THE SUN Eleven worlds to discover, from tiny Pluto to the Sun itself. Every collision is driven by real physics, so no two games ever stack up the same way. Cross the line at the top and it's over — so think about where each one lands. LEARN SOMETHING REAL Every planet you unlock opens a card of genuine astronomy: diameter, distance from the Sun, number of moons, day length, year length, surface temperature. Plus the details that stick with you — like the fact that it rains diamonds on Neptune. 220 PLANET PUZZLES A separate quiz mode with 220 questions about the solar system, space exploration, and the science behind it all. Ten questions a round. ONE TAP TO PLAY Tap where you want the planet to fall. That's the entire control scheme. Easy to start in a spare minute, hard to stop when you're one merge away from a world you've never seen. PLAY IN YOUR LANGUAGE Fully translated into 9 languages, quiz questions included. Free to play. An optional one-time purchase removes ads permanently.
Screenshots
Verdict
Edge Catalyst and Planet Merger are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Edge Catalyst sells 1 one-off in-app purchase and Planet Merger sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Edge Catalyst | Planet Merger |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | — |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 143 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Gwangsu Lee | Sandeep Vijayakumar |
In-app purchases
Edge Catalyst
- Remove Ads$2.99
Planet Merger
- Remove Ads$2.99





