Topics: Glycolysis, Pyruvate Oxidation, The Krebs Cycle, The Electron Transport Chain


The "Lite" version lets you preview the Learn, Interact, and Test section for each topic. If you like what you see you can unlock the full version with an in-App purchase.

Schools and Universities interested in volume purchases should contact First Class Standing to inquire about our "Pro" version available through Apple's Volume Purchase Program (VPP).


1. Glycolysis
2. Pyruvate Oxidation
3. The Krebs Cycle
4. The Electron Transport Chain

First Class Standing creates intuitive, interactive Science Apps for students. Each module guides you through a topic in three stages.

Stage 1: LEARN
In this section the topic is introduced to you through an animated tutorial.

Next, you get a chance to interact with the process by moving cellular components, selecting molecules, and initiating sequences.

Stage 3: TEST
Finally, we give you a topic test to see how much you've learned. Then you can share your results with friends and teachers.

Our Apps are designed to compliment most high school Biology curriculum expectations (IB, AP, US, Canada), but may also suitable for many first year post secondary programs.

Each App is built around the concept of spaced learning to help you study more efficiently and effectively.

What’s New

Version 2.51

Change new title.
Bugs at Glycolysis Learn part fixed.

Ratings and Reviews

3.3 out of 5
3 Ratings

3 Ratings

Mel in Boston ,

Fumarate structure is wrong

Please fix this program. In Kreb cycle, fumarate structure is wrong. There are other things that are slightly wrong. I was going to assign this app (or recommend it) to my students but I can't when it has mistakes.

KP love 1 ,

App won’t work correctly

This app is wonderful. But there is a problem. The glycolysis section after a week of buying the app, opens into just a blank pink screen. The other subjects worked, but I had a biochemistry exam on glycolysis. After much frustration I decided to uninstall the app, and reinstall it. Same problem, only worse. I already paid 3.99 for this to aid in my studying. And now THE LITE version is all that is accessible to me. Even more disheartening, I cannot contact the “help” because it is a page that is not a site/link/human/ OR helpful. So I’m stuck with an app I bought, with no assistance and a lack of material. I’m not going to purchase it again, and I recommend using a different app.


Peter Simpson
55.9 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Electron Transport Chain $0.99
  2. Glycolysis $0.99
  3. Pyruvate Oxidation & the Krebs Cycles $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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