Comparison

Crossdigit vs Idle Runner

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

Head to head
About

Crossdigit

Engage your mind with a unique math puzzle game where equations are clues and numbers are answers. Solve arithmetic and algebraic problems to fill in a crossword-style grid. Offers four difficulty levels and customizable grid sizes for a personalized challenge.

Highlights
  • Math equation clues
  • Number-based grid filling
  • Four difficulty levels
  • Customizable grid size
  • Offline play
  • Light and dark themes
  • Leaderboard ranking
Features
Read full description

Crossdigit is a math crossword-like puzzle game. Every clue is an equation; every answer is a number. ------------------------------------------ HOW TO PLAY Each numbered entry is a small math problem - 12 + 7, 84 ÷ 6, x² + 5 = 30 - and the answer are the digits you write into that row or column. Crossing entries share a digit, so a confident answer unlocks more clues. ------------------------------------------ FOUR DIFFICULTIES • Easy - addition and subtraction. • Medium - adds multiplication. • Hard - adds division. • Extreme - algebra: linear, quadratic, and mixed equations to solve for x. The grid size and answer-digit range are sliders you control. Start with a 6×6 grid of two-digit answers; ramp up to a 13×13 grid of five-digit algebra. The puzzle generator makes a unique puzzle every time. ------------------------------------------ DESIGNED FOR EVERYDAY LIFE • Plays fully offline once installed. • Pause anywhere - the timer freezes when you switch apps and your puzzle resumes exactly where you left it, even after a force-quit. • Light and dark themes that follow your system. • No accounts required. A device-private ID lets you sync your stats and earn a leaderboard rank without giving up an email. ------------------------------------------ LEADERBOARD AND DISPLAY NAMES Finish a puzzle and your time and score are weighed by difficulty and grid size. Faster solves of harder puzzles outrank slower solves of easy ones. Claim a globally-unique display name (changeable every two weeks) to stake your claim on the global board, or stay anonymous - your choice. A linking code lets you bring a second device into the same account without an email or password. Generate a code on one phone, redeem it on the other, and your stats merge. ------------------------------------------ WHY MATH CROSSWORDS? Crossdigit puzzles teach you to commit and verify - write a confident guess, see what you get correct and adjust. Work your brain out with some mental math. ------------------------------------------ PRIVACY Crossdigit requires zero login. Anonymous gameplay uses a device-private random ID; the optional display name is the only thing other players ever see.. ------------------------------------------ Get it and get solving today!

About

Idle Runner

Engage in an AFK defense RPG where your hero battles automatically while you strategically manage resources and upgrades. Explore multiple worlds, optimize your build with various powers and equipment, and progress through deep endgame systems. Enjoy continuous simulation even when offline.

Highlights
  • AFK auto-battle gameplay
  • Strategic resource management
  • Multiple worlds and enemy types
  • Deep upgrade and optimization systems
  • Endgame content and progression
  • Companions, skins, and seasons
  • Cloud save across devices
Features
Read full description

Your hero holds the line. You build the machine that keeps it standing. Idle Runner is an AFK defense RPG. Your hero stands its ground and fights on its own — firing at range, meleeing whatever gets close — while you decide where every coin goes. IT REALLY RUNS WHILE YOU'RE GONE Most idle games just estimate what you missed. Idle Runner keeps simulating. Close the app, lock your phone, walk away — waves keep coming, coins keep dropping, your build keeps earning. A notification tells you when your hero finally falls, so you know exactly when to come back. 8 WORLDS, ENDLESS WAVES Enchanted Forest, Dark Cavern, Scorched Desert, Corrupted Forest, Volcanic Wastes, Void Realm, Celestial Spire and Frostbound Forest. Each brings its own enemies, its own look, and a boss every 10 waves. Goblins, trolls, knights, vampires and necromancers all behave differently — and punish different mistakes. A BUILD WORTH OPTIMIZING • Workshop — permanent upgrades that stack run after run • Ascension — push past max level for bonuses that never reset • 10 active powers — Fireball, Frost, Berserker, Timewarp, Shadow Clone, Fire Nova and more, each upgradeable • Equipment — six rarities up to Mythic, with magical powers, sockets, merging and salvage • Runes — offense, defense, economy and utility, with synergy sets • Passive skills that unlock as you hit milestones Maxing an upgrade doesn't finish it. Ascend it for bonuses that ignore the cap, then raise the ascension ceiling itself through Awakening — and go again. The waves never stop, and your coin counter stops fitting normal notation long before you run out of things to buy. THE ENDGAME IS THE POINT • Sanctum — long-form rituals that reshape how your run behaves • Awakening — a deep node tree with real tier gates • Artifacts — craft them, attune them, complete the set bonuses • Jewelry — rings and amulets with procs that chain, burn and explode • Forge — turn raw materials into the gear you actually wanted • Trials — modifier runs for players who want the ceiling raised • Dark spells — a separate resource with its own risk COMPANIONS, SKINS, SEASONS Animated companions fight beside you and level from every wave survived. Hero skins bring their own look and bonuses. A season pass runs free and premium tracks side by side, with daily and weekly quests, and War Banners that snowball the longer you last. BUILT FAIR No energy bar. No paywall. No timer telling you to stop. Diamonds come from playing — chests, quests, milestones and optional ads. Everything in the game is reachable without spending a thing. BUILT TO LAST Cloud save across devices. An in-game encyclopedia for when you want the actual numbers instead of a guess. Runs that take minutes, and a progression curve measured in months. Actively developed — new worlds, new systems and new seasons keep landing while you're still climbing the last one. Hold the line.

Screenshots

Crossdigit4 screens
Idle Runner4 screens

Verdict

The call

The clearest difference is rating: Idle Runner at 4.7 against Crossdigit's 3.5. Idle Runner also leads on update cadence (every 3 days vs every 3 weeks) and review sentiment (67% vs 50%). Crossdigit's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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. Idle Runner sells 10 one-off in-app purchases. Crossdigit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Idle Runner holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Idle Runner has 40 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Crossdigit's written reviews are positive against 67% of Idle Runner's.

UpkeepUpdate frequency

Crossdigit ships an update every 3 weeks, Idle Runner every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
Crossdigit versus Idle Runner: the parameters behind the verdict, then further details
ParameterCrossdigitIdle Runner
PriceFreeFree
Rating3.5 (2 ratings)4.7 (40 ratings) — better
Positive reviews50.0% of reviews66.7% of reviews — better
Number of ratings240 — better
Update frequencyEvery 3 weeksEvery 3 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size10 MB158 MB
Age rating12+12+
DeveloperDakoddario LLCBLACKBYTE sp. z o. o.

Customer experience

Crossdigit

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Idle Runner

All ratings35 ratings
Positive88.6%
Neutral5.7%
Negative5.7%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

In-app purchases

None

Crossdigit

No in-app purchases

10 purchases

Idle Runner

One-time10
  • Hero's Starter Pack$0.99
  • Season Pass$3.99
  • 550 Diamonds$4.29
Show 7 more
  • 1,200 Diamonds$8.49
  • Quality of Life Pack$11.00
  • 3,250 Diamonds$16.99
  • Remove Ads$21.00
  • Aether 1500$42.49
  • Ultimate Pack$42.49
  • Aether 2500$63.90

Questions

Is Crossdigit free?
Crossdigit is free to download, with no in-app purchases.
Is Idle Runner free?
Idle Runner is free to download, with in-app purchases available.
Which has better reviews, Crossdigit or Idle Runner?
Idle Runner is rated higher. Crossdigit averages 3.5 out of 5 from 2 ratings, while Idle Runner averages 4.7 from 40 ratings.
Do Crossdigit or Idle Runner have ads?
Both Crossdigit and Idle Runner show ads.
Which is updated more often, Crossdigit or Idle Runner?
Crossdigit ships an update every 3 weeks, and Idle Runner every 3 days. Most recently, Crossdigit was updated on October 31, 2026 and Idle Runner on November 5, 2026.

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