Invader Sisters vs Feynman rules
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Invader Sisters
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Aim the high score to defeat the enemy invaders! Anyone can play easily, it is a shooting game.
Feynman rules
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This app introduces Feynman rules. You can get some understanding for Feynman diagrams. E is external point, V is vertex, P is propagator, and S is symmetry factor.
Screenshots
Verdict
The clearest difference is ads: Feynman rules at none against Invader Sisters's shown. Invader Sisters's advantage is iOS requirement (12.0 vs 16.0). On price, 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.
| Parameter | Invader Sisters | Feynman rules |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 19 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ERX | Sungjun Kim |
In-app purchases
Invader Sisters
No in-app purchases
Feynman rules
No in-app purchases
Questions
Is Invader Sisters free?
Is Feynman rules free?
Do Invader Sisters or Feynman rules have ads?
Other comparisons
