Vigenere Shift Plus vs Quantum Mechanics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vigenere Shift Plus
Encrypt and decrypt text messages using the Vigenère cipher. This application provides a straightforward tool for applying this historical encryption method to your messages.
- Encrypt messages
- Decrypt messages
- Vigenère cipher implementation
- Simple user interface
- Text encryption tool
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The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. With this simple App you can encrypt or decrypt messages with the Vigenère Cipher.
Quantum Mechanics
Explore various theories on the model and structure of atoms. This app details concepts like atomic postulates, photon mechanisms, and models for hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, and oxygen. It also covers related physics principles such as gravity, electromagnetism, and time.
- Atomic structure theories
- Models of various elements
- Photon mechanism explanations
- Gravity and electromagnetism concepts
- Time and electricity principles
- Mathematical algorithms
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Different theories about model and structure of atoms. Contents: - Set variables - Postulates - Mechanism of photons - (H) Hydrogen model - (H₂) model - (H₃) model - (H₄) model - (He) Helium-4 model - (He) Helium-5 model - (Li) Lithium-5 model - (Li) Lithium-6 model - (Li) Lithium-7 model - (Be) Beryllium-7 model - (Be) Beryllium-8 model - (Be) Beryllium-9 model - (Be) Beryllium-10 model - (B) Boron-8 model - (B) Boron-9 model - (B) Boron-10 model - (C) Carbon-10 model - (C) Carbon-11 model - (C) Carbon-12 model - (C) Carbon-13 model - (N) Nitrogen-11 model - (N) Nitrogen-12 model - (N) Nitrogen-13 model - (N) Nitrogen-14 model - (O) Oxygen-13 model - (O) Oxygen-14 model - (O) Oxygen-15 model - (O) Oxygen-16 model - (O) Oxygen-17 model - Flame (2 H₂ + O₂ > 2 H₂O) - Point of gravity - The sun doesn't shine and warm - Rays of cold - Climate control - Fifth Element - Excess energy - Electromagnetism - Gravity, Coulomb's law - Capacitor. Law of equilibrium - Atom - Radiowaves, Light, X-rays - Just Gravity - Just Gravity 2 - Just Gravity 3 - Time - Electricity - Time Mathematics - Sin approximation algorithm
Screenshots
Verdict
The clearest difference is price: Quantum Mechanics at Free against Vigenere Shift Plus's $0.99. Quantum Mechanics also leads on rating (4.5 vs 3.3) and ratings volume (179 vs 3). 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
Quantum Mechanics is free to download; Vigenere Shift Plus costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quantum Mechanics holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Quantum Mechanics has 179 ratings behind it against 3, so its average is the more settled of the two.
Vigenere Shift Plus ships an update every 3 months, Quantum Mechanics every 3 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Vigenere Shift Plus | Quantum Mechanics |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.3 (3 ratings) | 4.5 (179 ratings) — better |
| Positive reviews | — | 43.5% of reviews |
| Number of ratings | 3 | 179 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | a Rausa | Vitalii Gryniuk |
Customer experience
Vigenere Shift Plus
Quantum Mechanics
In-app purchases
Vigenere Shift Plus
No in-app purchases
Quantum Mechanics
No in-app purchases
Questions
Is Vigenere Shift Plus free?
Is Quantum Mechanics free?
Which has better reviews, Vigenere Shift Plus or Quantum Mechanics?
Do Vigenere Shift Plus or Quantum Mechanics have ads?
Which is updated more often, Vigenere Shift Plus or Quantum Mechanics?
Other comparisons
