Addition Skill Builders vs Rival Edge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Addition Skill Builders
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Improve your addition skills with Addition Skill Builders! Powered by natural handwriting input, this app transforms traditional practice into an engaging experience. It offers two modes: Math Trainer – a simple whiteboard where you can write your answers at your own pace. Math mini games – dive into 5 fun and engaging mini games with adaptive difficulty that challenge and motivate you at every level. With Addition Skill Builders you can practice and improve the following math skills: - Adding 1 - Adding 2 - Adding 3 - Adding 4 - Adding 5 - Adding 6 - Adding 7 - Adding 8 - Adding 9 - Adding 10
Rival Edge
Master strategic decision-making with real-life scenarios and Nobel Prize-winning game theory concepts. Learn practical rules for everyday dilemmas, track your progress, and gain an edge in negotiations and relationships.
- Interactive real-life scenarios
- 12 essential game theory concepts
- 20 practical daily rules
- Progress tracking with XP and ranks
- Payoff matrices for decision math
- Offline functionality
- Supports 6 languages
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Learn game theory through real-life scenarios. Rival Edge teaches you the science of strategic decision-making. INTERACTIVE SCENARIOS Face real dilemmas: salary negotiations, splitting restaurant bills, trust in relationships, group projects, and more. Every choice has consequences calculated through actual game theory models. 12 ESSENTIAL THEORIES Nash Equilibrium — why people get stuck in suboptimal situations Tit-for-Tat — the winning strategy in repeated interactions Prisoner's Dilemma — when cooperation beats selfishness Tragedy of the Commons — why shared resources disappear Ultimatum Game — the psychology of fairness And 7 more Nobel Prize-winning concepts 20 DAILY RULES Practical principles for everyday life: "Always name your number first", "Mirror behavior, not words", "Forgive fast, but remember". Each rule is backed by research. FEATURES 10+ scenarios with multiple outcomes Payoff matrices showing the math behind decisions Progress tracking with XP and ranks Beautiful dark interface 6 languages: English, Russian, French, German, Spanish, Italian No ads, no tracking, fully offline Whether you're negotiating a raise, dealing with a difficult neighbor, or deciding whether to trust someone — game theory gives you the edge.
Screenshots
Verdict
The clearest difference is update cadence: Rival Edge at every 6 months against Addition Skill Builders's every 28 months. Addition Skill Builders's advantage is price ($2.99 vs $3.99) and iOS requirement (12.0 vs 26.0). On 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
Addition Skill Builders costs $2.99 and Rival Edge $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Addition Skill Builders ships an update every 28 months, Rival Edge every 6 months. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | Addition Skill Builders | Rival Edge |
|---|---|---|
| Price | $2.99 — better | $3.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 28 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 19 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Malugin | Vladimir Rodzaevskiy |
In-app purchases
Addition Skill Builders
No in-app purchases
Rival Edge
No in-app purchases
Questions
Is Addition Skill Builders free?
Is Rival Edge free?
Do Addition Skill Builders or Rival Edge have ads?
Which is updated more often, Addition Skill Builders or Rival Edge?
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