HPLC Calculator vs Year Timer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
HPLC Calculator
Read full descriptionHide full description
This app is a powerful tool designed for R&D and QC departments, helping streamline essential lab and HPLC calculations. Ask questions and troubleshoot chromatography challenges Share knowledge and best practices Discuss methods, instrumentation, and real-world lab scenarios Connect with scientists, students, and professionals globally It supports: System Suitability Calculations for HPLC Buffer Preparation and pH Adjustments Linearity and Regression Analysis General Reagent and Solution Calculations In addition, the Chromatography Forum built into the app offers a collaborative space to: Ask questions and troubleshoot chromatography challenges Share knowledge and best practices Discuss methods, instrumentation, and real-world lab scenarios Connect with scientists, students, and professionals globally Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Year Timer
Read full descriptionHide full description
[Study Timer] I created a timer app that can calculate time. The biggest difference from other apps is that you can enter the title of goal setting and where you can calculate up to the year in kitchen timer format. We will introduce the main functions. [Home function] This is the first function that appears when the app is displayed. (Main screen) A list of set times and titles is displayed here. [Timer addition function] You can enter the timer information you want to set by pressing the plus button on the main screen. You can save it with save. [Timer detail function] You can actually start the timer by clicking the timer you want to see details from the list on the main screen.
Screenshots
Verdict
The clearest difference is in-app purchases: Year Timer at none against HPLC Calculator's 6. Year Timer also leads on update cadence (every 8 days vs every 5 weeks). HPLC Calculator's advantage is iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. HPLC Calculator sells 6 in-app purchases, starting at $0.59 per month. Year Timer asks for nothing beyond the download.
HPLC Calculator ships an update every 5 weeks, Year Timer every 8 days. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | HPLC Calculator | Year Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 8 days โ better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 66 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Youhana Mehany | kohei saiki |
In-app purchases
HPLC Calculator
- Remove Ads$0.591 Month
- Remove Ads$4.991 Year
- 50K Token Top-Up$2.99
- 100K Token Top-Up$4.99
- 250K Token Top-Up$9.99
Show 1 moreShow fewer
- 500K Token Top-Up$12.99
Year Timer
No in-app purchases
Questions
Is HPLC Calculator free?
Is Year Timer free?
Do HPLC Calculator or Year Timer have ads?
Which is updated more often, HPLC Calculator or Year Timer?
Other comparisons















