Comparison

Reverse Reaction! vs HAMMER FROG

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

Head to head
About

Reverse Reaction!

Features
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Your instincts are WRONG. That's the whole game. Opposite Day! flips everything you know about reaction games. The screen says TAP โ€” so you don't. It says DON'T TAP โ€” so you do. Simple to understand, hilariously hard to actually do. HOW IT WORKS โ€ข Read the instruction โ€ข Do the EXACT OPPOSITE โ€ข Do it fast โ€” hesitate and you lose a heart Tap, hold, and swipe your way through levels that get faster, trickier, and sneakier. Just when you think you've rewired your brain, the game flips the rules again. WHY YOU'LL LOVE IT (AND HATE IT) โ€ข One-hand, one-minute rounds โ€” perfect for queues, commutes, and "one more try" spirals โ€ข Levels that escalate from "easy" to "how did I fail THAT" โ€ข 3 hearts per run โ€” every mistake counts โ€ข TODAY'S TRICK โ€” a fresh daily challenge to keep your brain on its toes โ€ข Clean, hand-drawn notebook style with zero clutter TRAIN YOUR BRAIN BY BREAKING IT Opposite Day! isn't just about speed โ€” it's about impulse control. Suppressing your first reaction and doing the reverse is a genuine mental workout. You'll feel your brain fighting you. That's the point. Easy to learn. Impossible to master. Infuriatingly fun. Think backwards. React smarter. Play Opposite Day! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HAMMER FROG

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HAMMER FROG A frog is stranded at the top of a tall tower of blocks, and the only way down is through it. Stand on a block, swing your hammer, and knock it out sideways โ€” the frog drops one level closer to the ground. Do it again, and again. Clear the whole tower and the frog dives into the river far below. The catch: you can only knock out a block when the space behind you is open, and every block you remove changes what you can reach next. Pull them in the wrong order and you'll strand yourself with no move left. Each stage is a compact spatial puzzle โ€” read the tower, find the loose thread, and pull it free. Every stage is guaranteed to have a solution โ€” but not every path leads to it. If you're stuck, there's always a better line. And if you make a wrong move, just undo it and try again. HOW TO PLAY Move and turn the frog around the top of the tower Tap the block under your feet to hammer it out behind you Turn to aim: a block flies out the way the frog is facing Empty the tower level by level until the frog reaches the ground FEATURES Every stage verified solvable โ€” no luck required Towers grow from tidy 4x4 grids to dense, tangled 8x8 puzzles 8 different four-cube block shapes to read and route around Simple one-thumb controls, built for phones Undo any move โ€” no timers, no ads, no pressure. Think as long as you like Original synth soundtrack Bring the tower down, and get the frog to the river.

Screenshots

Reverse Reaction!4 screens
HAMMER FROG3 screens

Verdict

The call

The clearest difference is in-app purchases: HAMMER FROG at none against Reverse Reaction!'s 8. HAMMER FROG also leads on update cadence (monthly vs every 5 months). Reverse Reaction!'s advantage is iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Reverse Reaction! sells 8 one-off in-app purchases. HAMMER FROG asks for nothing beyond the download.

UpkeepUpdate frequency

Reverse Reaction! ships an update every 5 months, HAMMER FROG monthly. Both last shipped on October 6, 2026.

Scorecard3 real differences ยท 3 level
Reverse Reaction! versus HAMMER FROG: the parameters behind the verdict, then further details
ParameterReverse Reaction!HAMMER FROG
PriceFreeFree
Update frequencyEvery 5 monthsMonthly โ€” better
AdsYesYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS13.0 โ€” better15.6
Further details โ€” not scored
Size62 MB13 MB
Age rating4+4+
DeveloperPercy Ng'unioffice-canard games

In-app purchases

8 purchases

Reverse Reaction!

One-time8
  • Space Theme$0.99
  • Sketch Theme$0.99
  • Deep Sea Theme$0.99
Show 5 more
  • Retro Theme$0.99
  • Remove Ads Forever$1.99
  • 500 Coins$1.99
  • Remove Ads$3.00
  • 1000 Coins$4.99
None

HAMMER FROG

No in-app purchases

Questions

Is Reverse Reaction! free?
Reverse Reaction! is free to download, with in-app purchases available.
Is HAMMER FROG free?
HAMMER FROG is free to download, with no in-app purchases.
Do Reverse Reaction! or HAMMER FROG have ads?
Both Reverse Reaction! and HAMMER FROG show ads.
Which is updated more often, Reverse Reaction! or HAMMER FROG?
Reverse Reaction! ships an update every 5 months, and HAMMER FROG monthly. Most recently, Reverse Reaction! was updated on October 6, 2026 and HAMMER FROG on October 6, 2026.

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