Mathstack vs Sky Run
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/
Sky Run
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*** Sky Run – Across Twisted Paths *** A playful race unfolds high in the sky! Twist, jump, and roll along ever-changing paths. Every leap feels like a tiny adventure, and the paths keep you guessing at every step. Follow the path and discover how far it takes you. *** How to Play *** - Tap to jump - Tap and hold to jump farther *** Thank you so much for playing! We appreciate your support!! ***
Screenshots
Verdict
The clearest difference is device support: Sky Run at 3 against Mathstack's 1. Sky Run also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases 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 and Sky Run sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Mathstack ships an update every 11 days, Sky Run weekly. The most recent releases landed on June 27, 2026 and September 14, 2026 respectively.
| Parameter | Mathstack | Sky Run |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 days | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 331 MB |
| Age rating | 12+ | 4+ |
| Developer | Hazerim Interactive Entertainment, UAB | JIN HWAN KIM |
In-app purchases
Mathstack
- No Ads (Weekly)3 Days trial$1.997 Days
- No Ads (Monthly)$5.991 Month
- No Ads (Lifetime)$19.99
Sky Run
- Aveline$2.99
- Isabeau$2.99
- Rowena$2.99
Show 5 moreShow fewer
- Lyra$2.99
- Arwen$3.99
- Coraline$3.99
- Selene$3.99
- Zinnia$4.99





