8x7 Kevin vs Running Sphere
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
8x7 Kevin
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Small mental arithmetic game with three modes : standard/uncompleted/equation. Choice on the operators to use, the difficulty, the number of operations. High score system.
Running Sphere
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Get the ball to the other side of the screen avoiding falling into the holes. Each level will add a new hole that will make the path harder for our protagonist. Use the device's tilt sensors to move the ball and prevent it from falling. How level can you get?, share it with the rest of the players and reach the number one.
Screenshots
Verdict
The clearest difference is update cadence: Running Sphere at every 6 weeks against 8x7 Kevin's every 3 months. 8x7 Kevin's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
8x7 Kevin ships an update every 3 months, Running Sphere every 6 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | 8x7 Kevin | Running Sphere |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Marie Berlioz | Ruben Velasco |
In-app purchases
8x7 Kevin
No in-app purchases
Running Sphere
No in-app purchases
Questions
Is 8x7 Kevin free?
Is Running Sphere free?
Do 8x7 Kevin or Running Sphere have ads?
Which is updated more often, 8x7 Kevin or Running Sphere?
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