Comparison

Mathstack vs The Circle Survives

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

Head to head
About

Mathstack

A unique number puzzle game where you stack cards to form sequences. Strategically use temporary slots to clear the board and uncover hidden cards. Offers three difficulty levels for a tailored challenge.

Highlights
  • Sequence building gameplay
  • Strategic card stacking
  • Temporary slot management
  • Three difficulty levels
  • Uncover hidden cards
Features
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Mathstack - Sequence Puzzle Love number puzzles? This one's different. Stack your way to victory by building sequences from 1 to 15 (or 15 to 1) across five colorful stacks to clear the board. The catch? There are more cards than space on the board. Think ahead, use your temporary slots wisely, and plan your moves to uncover the cards you need. Three difficulty levels to match your mood: - Easy (1-5) for a quick brain break - Medium (1-10) for a solid challenge - Hard (1-15) for number-crunching pros Simple to learn. Tricky to master. Impossible to put down. Terms of Service: https://hazerim.com/terms-of-service/ Privacy Policy: https://hazerim.com/mathstack/privacy-policy/

About

The Circle Survives

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The Circle Survives is a compact survival arena game built around clean movement, auto-attacking combat, and escalating enemy pressure. Hold the center of a collapsing neon arena, dodge incoming waves, level up during the run, unlock powerful weapon evolutions, and push for longer survival with every attempt. The current build includes multiple weapons, elite enemies, a boss encounter, shard-based progression, daily-style goals, and cloud save support for gameplay progress.

Screenshots

Mathstack4 screens
The Circle Survives4 screens

Verdict

The call

The clearest difference is in-app purchases: The Circle Survives at none against Mathstack's 3. The Circle Survives also leads on update cadence (every 2 days vs every 11 days) and iOS requirement (15.0 vs 17.0). 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. Mathstack sells 3 in-app purchases, starting at $1.99 per 7 days. The Circle Survives asks for nothing beyond the download.

UpkeepUpdate frequency

Mathstack ships an update every 11 days, The Circle Survives every 2 days. The most recent releases landed on June 27, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 6 level
Mathstack versus The Circle Survives: the parameters behind the verdict, then further details
ParameterMathstackThe Circle Survives
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 11 daysEvery 2 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size31 MB16 MB
Age rating12+12+
DeveloperHazerim Interactive Entertainment, UABOleg Kuksa

In-app purchases

3 purchases

Mathstack

Subscriptions2
  • No Ads (Weekly)3 Days trial$1.997 Days
  • No Ads (Monthly)$5.991 Month
One-time1
  • No Ads (Lifetime)$19.99
None

The Circle Survives

No in-app purchases

Questions

Is Mathstack free?
Mathstack is free to download, with in-app purchases available.
Is The Circle Survives free?
The Circle Survives is free to download, with no in-app purchases.
Do Mathstack or The Circle Survives have ads?
Both Mathstack and The Circle Survives show ads.
Which is updated more often, Mathstack or The Circle Survives?
Mathstack ships an update every 11 days, and The Circle Survives every 2 days. Most recently, Mathstack was updated on June 27, 2026 and The Circle Survives on September 8, 2026.

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