equivalence principle vs MasterNow
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
equivalence principle
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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.
MasterNow
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MasterNow is a learning app for exploring many subjects in one place. It helps you study with structured topics, short explanations, progress tracking, and interactive activities while you read. Use MasterNow to: - Explore subject libraries across business, psychology, science, English, personal development, and more. - Read organized topics and subtopics in a simple learning format. - Practice with activities such as multiple choice, true/false, fill in the blank, matching columns, rearrange, flashcards, and comprehension where available. - Track progress, streaks, reading time, and recently visited topics. - Use helpful study support such as text-to-speech where available. MasterNow includes free learning experiences. Optional premium subscriptions unlock more subject access and can remove ads while active. You can restore purchases in the app and manage or cancel subscriptions through your Apple ID subscription settings. Features and content may vary by subject and availability. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.masternow.app/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: equivalence principle at none against MasterNow's 4. equivalence principle also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. MasterNow sells 4 in-app purchases, starting at $19.99 per 7 days. equivalence principle asks for nothing beyond the download.
| Parameter | equivalence principle | MasterNow |
|---|---|---|
| Price | Free | Free |
| Ads | No โ better | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 16.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 0 MB | 58 MB |
| Age rating | 4+ | 17+ |
| Developer | Sungjun Kim | Total Cyber Tech (Private) Limited |
In-app purchases
equivalence principle
No in-app purchases
MasterNow
- Full Access Weekly$19.997 Days
- Full Access Monthly$49.991 Month
- Full Access 6 Months$99.996 Months
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- Full Access Yearly$149.991 Year
Questions
Is equivalence principle free?
Is MasterNow free?
Do equivalence principle or MasterNow have ads?
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