Comparison

Countdown Game & Solver vs ROTATRIX

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

Head to head
About

Countdown Game & Solver

Experience the "Numbers" round of a popular TV game show as a tile-based puzzle game. Solve arithmetic challenges by combining numbered tiles to reach a target number. Includes a powerful solver to find all possible solutions and share your progress with friends.

Highlights
  • Numbers game show rounds
  • Tile-based arithmetic puzzle
  • Universal solution solver
  • Millions of starting configurations
  • Share accomplishments via Messages
  • Runs on iPhone and iPad
Features
Read full description

Countdown is a game show on British television (French original: Des chiffres et des lettres). This app reworks the “Numbers” portion of the game show as a Scrabble®-like tile game for your iPhone or iPad. It includes a Universal Solver that finds all possible solutions to any Numbers puzzle you care to throw at it. Feature List: • The “Numbers” rounds of the Countdown game show, reworked as a Scrabble®-like tile game. • More than 11 million unique starting configurations at your disposal. (The precise figure is 11 918 700.) • Play the game by dragging numbered tiles onto the game board and progressively building up arithmetic expressions to a final result that matches the target number (or comes within ten of it). • Includes a Universal Solver that finds, within a few seconds, all possible solutions for a given initial configuration. Furthermore, if no solution is found, you can be sure that no solution exists. • In generating the list of solutions, the Universal Solver recognizes new solutions that are near-duplicates of pre-existing solutions — e.g., with minor variations in the order of the arithmetic expressions — and culls such new solutions in order to the keep the list of solutions manageable. • Fully integrated with Apple’s Messages app, so you can share your accomplishments with your friends and issue challenges to them. • A single universal app which runs on all your iOS devices: iPhone, iPad, and/or iPod touch.

About

ROTATRIX

Features
Read full description

ROTATRIX — block puzzle with a unique twist. Rotate every piece before you place it. Clear blocks by filling rows and columns. Keep the board clean before the stones get in your way. Play solo for the highest score, or challenge a friend to a duel. Sounds simple? The combination of rotation, stones and strategy makes every game a new puzzle. FOUR GAME MODES NORMAL — Classic block puzzle for endless play. Play as long as you want and build your highest score. ARCADE — The exciting variant. Bombs appear in your tray and clear everything in a radius. Risk or strategy? DAILY — One puzzle, one goal. Clear all stones in as few moves as possible. Everyone plays the same board and you see how you did compared to other players today. DUEL — Play against a friend on the same board. Live with a time limit per move for a quick match, or at your own pace over multiple days — make your move when it suits you. Who has the best eye for patterns? STONES AS CHALLENGE In single-player modes, stones appear on the board that must be cleared within three turns. FAIR PLAY No frustration from impossible pieces. ROTATRIX always ensures there is a valid spot. Getting stuck means you need to puzzle better, not that the game was unfair. EARN UNDO A wrong move? Watch a short video and get an undo. Maximum three per game — forces you to make better decisions. PREMIUM (one-time purchase) - No ads - Unlimited undos - Family Sharing PRIVACY ROTATRIX collects no unnecessary data. See our privacy policy for details. Designed and built by Tileplay — a Dutch indie game studio.

Screenshots

Countdown Game & Solver4 screens
ROTATRIX4 screens

Verdict

The call

The clearest difference is in-app purchases: Countdown Game & Solver at none against ROTATRIX's 1. Countdown Game & Solver also leads on iOS requirement (13.0 vs 15.1). ROTATRIX's advantage is update cadence (daily vs every 3 weeks). On price, ads 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. ROTATRIX sells 1 one-off in-app purchase. Countdown Game & Solver asks for nothing beyond the download.

UpkeepUpdate frequency

Countdown Game & Solver ships an update every 3 weeks, ROTATRIX daily. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Countdown Game & Solver versus ROTATRIX: the parameters behind the verdict, then further details
ParameterCountdown Game & SolverROTATRIX
PriceFreeFree
Rating4.7 (40 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings40 — better—
Update frequencyEvery 3 weeksDaily — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size19 MB51 MB
Age rating4+4+
DeveloperLawrence AnthonyHenricus van den Hurk

In-app purchases

None

Countdown Game & Solver

No in-app purchases

1 purchases

ROTATRIX

One-time1
  • Remove Ads$2.99

Questions

Is Countdown Game & Solver free?
Countdown Game & Solver is free to download, with no in-app purchases.
Is ROTATRIX free?
ROTATRIX is free to download, with in-app purchases available.
Do Countdown Game & Solver or ROTATRIX have ads?
Both Countdown Game & Solver and ROTATRIX show ads.
Which is updated more often, Countdown Game & Solver or ROTATRIX?
Countdown Game & Solver ships an update every 3 weeks, and ROTATRIX daily. Most recently, Countdown Game & Solver was updated on October 6, 2026 and ROTATRIX on October 5, 2026.

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