Comparison

Rival Edge vs EarthPhase

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

EarthPhase

Explore a beautifully designed, interactive solar system with real-time celestial data. Track moon and Earth phases, view planet positions, and travel through time to discover cosmic events and facts.

Highlights
  • Interactive solar system map
  • Real-time moon and Earth phases
  • Home and lock screen widgets
  • Time travel slider for past/future events
  • Discover cosmic facts and mechanics
  • Accurate planet positions and orbits
Features
Read full description

EarthPhase is your personal, beautifully designed pocket solar system, with all features completely free. Built with a stunning matte, low-key aesthetic, it brings the exact state of the solar system directly to your device. Whether you are an astronomy enthusiast or simply love a clean, minimalist Home Screen, EarthPhase tracks the cosmos in real-time. WIDGET SUITE Never miss a cosmic event. EarthPhase offers a variety of widgets designed to blend seamlessly with your custom setups: Home Screen Trackers: Keep an eye on the current Moon and Earth phases with perfectly rendered, dynamic icons. Lock Screen Data: Add circular planet icons or detailed rectangular widgets that display the exact live illumination percentage of the Moon or Earth right below your clock. Live Solar System: Place a dynamic map of the inner and outer planets on your Home Screen, available in multiple sizes. INTERACTIVE SOLAR SYSTEM Dive into the app to explore a highly accurate, interactive schematic of our solar system. Tap any planet to zoom in on its specific orbit, view its position relative to the Sun, and explore its major moons. TIME TRAVEL SLIDER Wondering what the moon phase was on the day you were born? Or when the next supermoon will happen? Use the precision control panel to scrub backward and forward through time. The entire solar system and moon phase engine will smoothly animate to reflect the exact celestial state of any date and time you choose. DISCOVER THE COSMOS Expand your knowledge with a massive library of scientifically accurate, lesser-known facts. Learn about the bizarre orbital mechanics of Jupiter's outer moons, the metal snow on Venus, or the true scale of the Martian canyons.

Screenshots

Rival Edge4 screens
EarthPhase4 screens

Verdict

The call

The clearest difference is price: EarthPhase at Free against Rival Edge's $3.99. EarthPhase also leads on iOS requirement (18.6 vs 26.0). Rival Edge's advantage is in-app purchases (none vs 2). On rating, ratings volume, 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

EarthPhase is free to download; Rival Edge costs $3.99 up front. EarthPhase sells 2 one-off in-app purchases. Rival Edge asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Rival Edge against 5.0 for EarthPhase. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard4 real differences · 5 level
Rival Edge versus EarthPhase: the parameters behind the verdict, then further details
ParameterRival EdgeEarthPhase
Price$3.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 6 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.018.6 — better
Further details — not scored
Size7 MB40 MB
Age rating4+4+
DeveloperVladimir RodzaevskiyNathan Coleman

Customer experience

Rival Edge

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

EarthPhase

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rival Edge

No in-app purchases

2 purchases

EarthPhase

One-time2
  • Tip$0.99
  • Tip$4.99

Questions

Is Rival Edge free?
Rival Edge costs $3.99, with no in-app purchases.
Is EarthPhase free?
EarthPhase is free to download, with in-app purchases available.
Which has better reviews, Rival Edge or EarthPhase?
Rival Edge and EarthPhase are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Rival Edge or EarthPhase have ads?
Neither Rival Edge nor EarthPhase shows ads.

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