Biological Buffer Calculator vs CO2 Filter Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Biological Buffer Calculator
This utility app assists chemists and biochemists in preparing precise buffer solutions. Users input desired volume, pH, and concentration, along with stock solution details, to receive exact mixing instructions.
- Buffer system selection
- Volume, pH, and concentration input
- Stock solution concentration input
- Precise mixing volume calculation
- Pocket companion for labs
Read full descriptionHide full description
Chemical/biochemical pocket companion designed by the editors of Current Protocols. Choose from a list of all of the commonly used biological buffer systems, enter your desired volume, pH, and buffer concentration, as well as the concentrations of your stock solutions of the conjugate acid and base, and the calculator will inform you of the exact volumes of these stock solutions to mix in order to obtain the buffer needed.
CO2 Filter Calc
Read full descriptionHide full description
The TOMCO Systems Filter Calculator is an assistant tool for sizing CO2 Polishing Filters. This app will help you understand what size filter will be necessary for your system to ensure you get the best product. As the exclusive U.S. distributor of Sure Purity filters, TOMCO2 Systems is proud to offer Sure Purity's high-quality products that are trusted by some of the biggest names in the industry. Sure Purity manufactures an advanced range of carbon dioxide multi-barrier polishing filters – carbogaurd. These barrier filters offer 12-month maintenance intervals while simultaneously offering the most enhanced protection from Carbonyl Sulphide (COS).
Screenshots
Verdict
The clearest difference is update cadence: CO2 Filter Calc at weekly against Biological Buffer Calculator's every 77 months. Biological Buffer Calculator's advantage is iOS requirement (8.0 vs 14.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Biological Buffer Calculator ships an update every 77 months, CO2 Filter Calc weekly. The most recent releases landed on June 5, 2026 and May 16, 2026 respectively.
| Parameter | Biological Buffer Calculator | CO2 Filter Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (8 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 77 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 8.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Wiley | TOMCO2 Systems Company |
In-app purchases
Biological Buffer Calculator
No in-app purchases
CO2 Filter Calc
No in-app purchases
Questions
Is Biological Buffer Calculator free?
Is CO2 Filter Calc free?
Do Biological Buffer Calculator or CO2 Filter Calc have ads?
Which is updated more often, Biological Buffer Calculator or CO2 Filter Calc?
Other comparisons
