Mathstack vs The Circle Survives
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Sequence building gameplay
- Strategic card stacking
- Temporary slot management
- Three difficulty levels
- Uncover hidden cards
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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/
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
Verdict
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
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.
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.
| Parameter | Mathstack | The Circle Survives |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 days | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 16 MB |
| Age rating | 12+ | 12+ |
| Developer | Hazerim Interactive Entertainment, UAB | Oleg Kuksa |
In-app purchases
Mathstack
- No Ads (Weekly)3 Days trial$1.997 Days
- No Ads (Monthly)$5.991 Month
- No Ads (Lifetime)$19.99
The Circle Survives
No in-app purchases





