Amino Acid Quiz vs RAYS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Amino Acid Quiz
Test and enhance your understanding of the 20 standard amino acids with customizable quizzes. Explore topics like names, structures, codes, codons, and side chain classes. Study all topics for free, with an optional in-app purchase to remove ads.
- Customizable quizzes
- 20 standard amino acids
- Amino acid names
- Structural formulas
- 1-Letter and 3-Letter codes
- Codons
- Side chain classes
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Test and improve your knowledge of the 20 standard amino acids using this app's customizable quizzes. Multiple choice quizzes cover the following 6 topics: - Amino acid names - Structural formulas - 1-Letter codes - 3-Letter codes - Codons - Side chain classes All topics can be studied for free using this app. An in-app purchase is available to remove the banner ad. The game language can easily be changed in-app to English, French, Spanish, German, Simplified Chinese, Traditional Chinese, Japanese, Korean, Italian, Indonesian, Russian, Portuguese, Swedish, Norwegian, and Dutch.
RAYS
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RAYS is more than just fitness. It’s a philosophy. A mindset. A movement. Designed by Sofia Rays and born from a personal journey of healing and heart, RAYS helps you transform not just how you look — but how you feel, think, and live. After experiencing heart surgery and learning to live with arrhythmias, Sofia discovered something extraordinary: the power of alignment. Alignment between body, mind and purpose. That’s where the RAYS method was born — a life-changing framework to train your body, elevate your energy, and shift your entire outlook on life. RAYS brings this transformation to you, wherever you are. Whether you're just starting your fitness journey or searching for deeper fulfilment, RAYS offers a curated blend of fitness, mindfulness, and self-love — all in one beautiful, accessible app. What You’ll Experience Inside RAYS: Mind-Body Fitness Train your body with guided video sessions crafted by Sofia herself. From sculpting and toning workouts to restorative flows, every session is designed to help you feel strong, confident, and radiant. Mindfulness & Energy Work Begin to love the reflection you see by first transforming how you feel inside. Discover guided meditations, daily rituals and self-connection practices that restore your peace and uplift your energy. The Rays Formula This is more than a routine — it’s a way of living. Start with physical movement, anchor your mind through mindfulness, and awaken self-love through intentional action. From this space, everything changes — your body, your energy, your circumstances. Multilingual Experience The RAYS app is available in English, Spanish, and Russian, with full community support and content in all three languages — so you feel truly at home. Supportive Global Community Join a nurturing space filled with like-minded women on the same journey. Connect, share progress, and grow together in your language — with no judgment, only encouragement. Live Sessions + On-Demand Content Access weekly live classes with Sofia and enjoy a growing library of pre-recorded programs you can do at your own pace. Move when you want, how you want. Created by Sofia Rays An international coach and wellness guide with a global audience, Sofia is known for her relatable, heart-led approach to fitness and wellbeing. RAYS is her gift to every woman ready to shift her story. What Makes RAYS Different: Unlike traditional fitness apps that only target your physical form, RAYS works from the inside out. It’s a holistic approach designed to build healthy habits, self-trust, and emotional clarity. You’ll move, meditate, and learn to truly care for yourself — and in return, your body and your life will begin to respond. This isn’t about achieving perfection. It’s about finding fulfilment — through movement, through stillness, and through deep alignment with who you truly are. RAYS was born from the heart — and built for yours. Because when you love your body, when you nourish your mind, when you treat yourself with care — life responds. So if you're ready to glow differently… To move with purpose. To show up for your dreams. And to fall in love with your journey — Welcome to RAYS. Start today. Begin your transformation.
Screenshots
Verdict
The clearest difference is in-app purchases: RAYS at none against Amino Acid Quiz's 1. RAYS also leads on ads (none vs shown) and update cadence (every 2 months vs every 13 months). On price, device support and iOS requirement 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. Amino Acid Quiz sells 1 one-off in-app purchase. RAYS asks for nothing beyond the download.
Amino Acid Quiz ships an update every 13 months, RAYS every 2 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.
| Parameter | Amino Acid Quiz | RAYS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (1K ratings) — better | — |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 1K — better | — |
| Update frequency | Every 13 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 100 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Atlas Educational Software | TSN Consultancy Services Ltd |
Bugs and requests
Amino Acid Quiz
Reported bugs
1 issue- Arginine (Arg) incorrectly displayed as tyrosine (Tyr) in quiz results
Requested features
4 requests- Add drawing/structure input mode
- Include 21st amino acid (selenocysteine)
- Add pH-dependent structure visualization
- Implement a continuous/infinite quiz mode
RAYS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Amino Acid Quiz
- Remove Ads$0.99
RAYS
No in-app purchases









