Comparison

HPLC Calculator vs Year Timer

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

Head to head
About

HPLC Calculator

Features
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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/

About

Year Timer

Features
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[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

HPLC Calculator4 screens
Year Timer3 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences ยท 3 level
HPLC Calculator versus Year Timer: the parameters behind the verdict, then further details
ParameterHPLC CalculatorYear Timer
PriceFreeFree
Update frequencyEvery 5 weeksEvery 8 days โ€” better
AdsYesYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better16.0
Further details โ€” not scored
Size66 MB23 MB
Age rating4+4+
DeveloperYouhana Mehanykohei saiki

In-app purchases

6 purchases

HPLC Calculator

Subscriptions2
  • Remove Ads$0.591 Month
  • Remove Ads$4.991 Year
One-time4
  • 50K Token Top-Up$2.99
  • 100K Token Top-Up$4.99
  • 250K Token Top-Up$9.99
Show 1 more
  • 500K Token Top-Up$12.99
None

Year Timer

No in-app purchases

Questions

Is HPLC Calculator free?
HPLC Calculator is free to download, with in-app purchases available.
Is Year Timer free?
Year Timer is free to download, with no in-app purchases.
Do HPLC Calculator or Year Timer have ads?
Both HPLC Calculator and Year Timer show ads.
Which is updated more often, HPLC Calculator or Year Timer?
HPLC Calculator ships an update every 5 weeks, and Year Timer every 8 days. Most recently, HPLC Calculator was updated on October 3, 2026 and Year Timer on October 10, 2026.

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