Comparison

equivalence principle vs Phobias Guide..

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

Head to head
About

equivalence principle

Features
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This app represents the equivalence principle which states that gravitational and inertial forces are of a similar nature and often indistinguishable. Left rocket is moving up with constant acceleration a, and right rocket is on the some planet where the gravitational acceleration is g. If a is equal to g, the motion of a ball which is dropped in the left rocket is the same as the motion of a ball which is dropped in the right rocket; two balls experience the same constant acceleration motion. This is the simple demonstration of the equivalence principle. This app doesn't simulate the whole motion of a ball. Only falling motion is intended to show the equivalence principle.

About

Phobias Guide..

Features
Read full description

Learn about phobias, fears, and anxiety-related responses. Phobias Guide helps you explore different types of phobias and understand how fears influence human behavior. Discover information about common and rare phobias, including their symptoms, possible causes, and general treatment approaches. The app provides structured information designed for students, psychology learners, and anyone interested in understanding fears and anxiety disorders. Phobia Profiles • Explore many different phobias • Learn scientific names and classifications • Understand how fears are categorized • Discover common triggers and reactions Symptoms and Triggers • Learn typical symptoms of phobias • Understand emotional and physical reactions • Explore situations that may trigger fears Causes and Risk Factors • Learn possible causes of phobias • Understand psychological and environmental factors • Explore how fears may develop over time Treatment and Support • Overview of common treatment approaches • Learn about therapy and coping strategies • Understand management options for anxiety and fear Learning Tools • Educational facts about phobias • Quiz mode to test your knowledge • Structured explanations designed for easier learning Search and Discovery • Search phobias quickly • Browse topics through organized categories • Explore different types of fears Favorites • Save phobias for quick reference • Review important topics anytime Designed for Easy Learning • Clean and simple interface • Organized psychology information • Easy navigation between topics Premium Features Upgrade for additional benefits: • Offline access to phobia information • Ad-free experience • Enhanced reading convenience Privacy Focused • No unnecessary permissions • No personal data collection • Information remains on your device Who This App Is For • Students studying psychology • Mental health learners • Researchers and educators • Anyone interested in fears and phobias Phobias Guide helps you explore phobias, understand fear responses, and learn about psychological aspects of anxiety. Download Phobias Guide to explore different types of fears. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

equivalence principle2 screens
Phobias Guide..4 screens

Verdict

The call

The clearest difference is in-app purchases: equivalence principle at none against Phobias Guide..'s 2. equivalence principle also leads on ads (none vs shown). Phobias Guide..'s advantage is iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Phobias Guide.. sells 2 in-app purchases, starting at $1.99 per month. equivalence principle asks for nothing beyond the download.

Scorecard3 real differences Ā· 3 level
equivalence principle versus Phobias Guide..: the parameters behind the verdict, then further details
Parameterequivalence principlePhobias Guide..
PriceFreeFree
Update frequency—Every 2 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size0 MB156 MB
Age rating4+4+
DeveloperSungjun KimOlga Ivanova

In-app purchases

None

equivalence principle

No in-app purchases

2 purchases

Phobias Guide..

Subscriptions1
  • phobias_by_oliva_subscription$1.991 Month
One-time1
  • phobias_by_oliva_donation$1.99

Questions

Is equivalence principle free?
equivalence principle is free to download, with no in-app purchases.
Is Phobias Guide.. free?
Phobias Guide.. is free to download, with in-app purchases available.
Do equivalence principle or Phobias Guide.. have ads?
Phobias Guide.. shows ads; equivalence principle does not.

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