Comparison

Tap OChem vs ProteinViewerApp

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

Head to head
About

Tap OChem

Visualize complex organic chemistry reactions and concepts with animated explanations. This app covers a wide range of undergraduate organic chemistry topics, aiding in exam preparation and understanding of molecular behavior.

Highlights
  • Animated organic chemistry reactions
  • Detailed concept explanations
  • Electron pushing diagrams
  • Full-color text descriptions
  • MCAT, PCAT, OAT, DAT prep
  • Regular content updates
Features
Read full description

"Awesome" writes a reviewer! More reviewers comments! "I have used it for all of my exams so far and it is extraordinarily helpful." "This is the best investment that you can make to visualize the reactions. There are a ton of them and they are AWESOME!!!!!" Another reviewer writes “Covers all of the major topics and the videos help me visualize the details of the molecules and reactions”…“Could almost replace a whole textbook.” While we never claim to cover an entire organic chemistry class, with content added in each update (major free updates each year since publishing ten years ago!), Tap OChem is the app that delivers! The reactions and concepts included are many from the one year sequence of undergraduate organic chemistry that is offered at all major colleges and universities. Students have told us that this app was essential in their preparation for the MCAT. Whether you are currently in the one year sequence of classes or reviewing for the MCAT, or PCAT, OAT, and DAT, this app will help! Designed by two award winning chemists with over 48 years of combined experience teaching at major universities, Tap OChem makes organic chemistry reaction come to life for each included reaction or concept. The following animations are currently included: Substitution reactions (20 animations), Elimination reactions (11 animations), Alkene Chemistry (15 animations), Free Radical Chemistry (4 animations), Alkyne Chemistry (7 animations), Epoxide chemistry (4 animations), Benzene chemistry (10 animations), Diene Chemistry (8 animations), Carbonyl Chemistry (8 animations), Major concepts (62+ animations), and Molecules in Motion (35+ animations). The Concepts section includes valence bond theory, molecular orbital theory, electrostatic potential maps, radical spin density maps, alkene stability, dienes and stability, conformational analysis of alkanes and cyclohexane, etc. We've just started adding information on intermolecular interactions and plan on more spectroscopic topics! One animation on dipole/dipole attraction was added. Two animations, one focused on the introduction to IR spectroscopy are included. We are developing and updating more animations for future updates! Each animation has an accompanying text that drills down to the main facts of each reaction or concept. These are in FULL COLOR! They are short, handy, descriptions with important information regarding each reaction or concept. In the case of reaction animations, the concise scrollable text descriptions include electron pushing. We will continue to update the app with future releases. Tap OChem is native to both iPhones and iPads! In addition to the animations being very sharp on your iPhone and iPad, they are of excellent quality when projected (iPhone 4S and iPhone 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, X, 11, 12, and later, iPad 2 and later, using appropriate adapters) in a classroom. For the iPhone 6s and later; and iPad Air 1 and 2 and later, an appropriate adapter is needed like Lightning Digital AV Adapter (this is an HDMI adapter), or a USB C to HDMI adapter, or a Lightning to VGA Adapter. Please visit www.tapochem.com for further information.

About

ProteinViewerApp

Explore and learn about protein structures in 3D. This tool offers interactive visualization, educational modes, and direct access to protein data for students and researchers.

Highlights
  • 3D protein visualization
  • Step-by-step structural insights
  • Educational modes by category
  • Multiple rendering styles
  • Direct PDB integration
  • Clear terminology explanations
Features
Read full description

ProteinViewerApp is a 3D viewer and learning tool designed to help you intuitively understand protein structures. Key Features 1. 3D Protein Viewer: Rotate, zoom, and highlight chains and ligands with step-by-step structural insights (levels 1–4). 2. Educational Mode: Learn by category, including enzymes, hormones, and defense proteins. 3. Multiple Rendering Styles: Explore structures with ribbon, surface, stick, and more visualization options. 4. PDB Integration: Access the latest protein data directly from the RCSB Protein Data Bank and import custom PDB files. 5. Optimized Learning Experience: Clear terminology explanations and an education-friendly UI/UX. Why ProteinViewerApp? • For students: Experience the excitement of exploring protein structures beyond textbooks. • For researchers: Boost research efficiency with precise analysis and access to up-to-date data. Make science more engaging, more accessible. Download ProteinViewerApp now and explore the world of proteins at your fingertips!

Screenshots

Tap OChem4 screens
ProteinViewerApp4 screens

Verdict

The call

The clearest difference is review sentiment: Tap OChem at 92% against ProteinViewerApp's 0%. Tap OChem also leads on rating (4.7 vs 3.0) and ratings volume (39 vs 2). ProteinViewerApp's advantage is update cadence (fortnightly vs every 3 months). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Tap OChem costs $4.99 and ProteinViewerApp $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Tap OChem holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Tap OChem has 39 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 92% of Tap OChem's written reviews are positive against 0% of ProteinViewerApp's.

UpkeepUpdate frequency

Tap OChem ships an update every 3 months, ProteinViewerApp fortnightly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Tap OChem versus ProteinViewerApp: the parameters behind the verdict, then further details
ParameterTap OChemProteinViewerApp
Price$4.99$4.99
Rating4.7 (39 ratings) — better3.0 (2 ratings)
Positive reviews91.7% of reviews — better0.0% of reviews
Number of ratings39 — better2
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.2 — better17.6
Further details — not scored
Size3.5 GB8 MB
Age rating4+12+
DeveloperTap OChem, LLCJONG HYUN LEE

Customer experience

Tap OChem

All ratings39 ratings
Positive92.3%
Neutral0.0%
Negative7.7%
Written reviews12 reviews
Positive91.7%
Neutral0.0%
Negative8.3%

ProteinViewerApp

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Tap OChem

No in-app purchases

None

ProteinViewerApp

No in-app purchases

Questions

Is Tap OChem free?
Tap OChem costs $4.99, with no in-app purchases.
Is ProteinViewerApp free?
ProteinViewerApp costs $4.99, with no in-app purchases.
Which has better reviews, Tap OChem or ProteinViewerApp?
Tap OChem is rated higher. Tap OChem averages 4.7 out of 5 from 39 ratings, while ProteinViewerApp averages 3.0 from 2 ratings.
Do Tap OChem or ProteinViewerApp have ads?
Neither Tap OChem nor ProteinViewerApp shows ads.
Which is updated more often, Tap OChem or ProteinViewerApp?
Tap OChem ships an update every 3 months, and ProteinViewerApp fortnightly. Most recently, Tap OChem was updated on November 1, 2026 and ProteinViewerApp on November 5, 2026.

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