Comparison

Vacuum Link vs HPLC Calculator

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

Head to head
About

Vacuum Link

Read full description

Vacuum Link installs on your Apple mobile device. It is customizable to let you select the parameters you want to control and monitor. It also offers recording and plotting capability. Data can be easily exported to your computer for display, sharing, and analysis. Connectivity is achieved through Agilent's serial/bluetooth adapter part number: X3514-68003 **Easy vacuum pump control with your mobile phone** It is easily customizable, allowing you to build a β€˜Favourites’ list of the parameters you want to manage. **Smart connectivity at hand** A new way to be connected to your work: export and share device data easily and quickly **Smart features for a modern platform** Vacuum Link installs on your Apple mobile device. It allows real time monitoring of the parameters of your choice, and offers recording capability: data can be exported to your computer to be displayed and shared. Creating log files is easy and sharing them is extremely quick using the regular features available on virtually any cell phones. Log files help users review the pump parameters in a spreadsheet. Plotting parameters variations in time can be done using the dedicated icon.

About

HPLC Calculator

Features
Read 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/

Screenshots

Vacuum Link4 screens
HPLC Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: Vacuum Link at none against HPLC Calculator's 6. Vacuum Link also leads on ads (none vs shown) and iOS requirement (8.0 vs 13.0). HPLC Calculator's advantage is update cadence (every 5 weeks vs every 18 months). On price and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. HPLC Calculator sells 6 in-app purchases, starting at $0.59 per month. Vacuum Link asks for nothing beyond the download.

UpkeepUpdate frequency

Vacuum Link ships an update every 18 months, HPLC Calculator every 5 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard4 real differences Β· 2 level
Vacuum Link versus HPLC Calculator: the parameters behind the verdict, then further details
ParameterVacuum LinkHPLC Calculator
PriceFreeFree
Update frequencyEvery 18 monthsEvery 5 weeks β€” better
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 β€” better13.0
Further details β€” not scored
Size65 MB66 MB
Age rating4+4+
DeveloperAgilent Technologies, IncYouhana Mehany

In-app purchases

None

Vacuum Link

No 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

Questions

Is Vacuum Link free?
Vacuum Link is free to download, with no in-app purchases.
Is HPLC Calculator free?
HPLC Calculator is free to download, with in-app purchases available.
Do Vacuum Link or HPLC Calculator have ads?
HPLC Calculator shows ads; Vacuum Link does not.
Which is updated more often, Vacuum Link or HPLC Calculator?
Vacuum Link ships an update every 18 months, and HPLC Calculator every 5 weeks. Most recently, Vacuum Link was updated on October 26, 2026 and HPLC Calculator on October 27, 2026.

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