Tap OChem vs Pocket MRS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Animated organic chemistry reactions
- Detailed concept explanations
- Electron pushing diagrams
- Full-color text descriptions
- MCAT, PCAT, OAT, DAT prep
- Regular content updates
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"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.
Pocket MRS
This app provides a quick reference and educational tool for in vivo magnetic resonance spectroscopy (MRS). It offers simulated human brain spectra and analysis, allowing users to visualize the impact of experimental conditions on spectral appearance.
- Simulated human brain spectra
- Detailed spectral analysis
- Manipulation of echo time
- Visualization of experimental conditions
- Quick digital reference
- Educational tool for MRS
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Pocket MRS was designed to be a fast and versatile electronic reference and educational tool for students, medical professionals, researchers and anybody else engaged in the field of in vivo magnetic resonance spectroscopy (MRS). Pocket MRS is a mobile application that offers simple and easy access to simulated spectra from the human brain and its detailed analysis. Spectra available from 0 to 300 ms TE were obtained using realistic quantum mechanical density operator simulations, and then scaled using known concentration, T1 and T2 values across 19 different metabolites and the sum of 10 macromolecules. Spectra can be manipulated with respect to echo time, magnetic field quality and noise levels, providing quick and convenient visualization of the impact of typical experimental conditions on spectral appearance. The app can be a quick digital reference and valuable help for the MRS community when desktop computers and extended MRS software tools are not available.
Screenshots
Verdict
The clearest difference is price: Pocket MRS at Free against Tap OChem's $4.99. Pocket MRS also leads on rating (5.0 vs 4.7). Tap OChem's advantage is ratings volume (39 vs 3). On ads, in-app purchases, 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
Pocket MRS is free to download; Tap OChem costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pocket MRS holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Tap OChem has 39 ratings behind it against 3, so its average is the more settled of the two.
| Parameter | Tap OChem | Pocket MRS |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.7 (39 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 91.7% of reviews | — |
| Number of ratings | 39 — better | 3 |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.2 — better | 14.2 |
| Further details — not scored | ||
| Size | 3.5 GB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | Tap OChem, LLC | Columbia University |
Customer experience
Tap OChem
Pocket MRS
In-app purchases
Tap OChem
No in-app purchases
Pocket MRS
No in-app purchases









