Vacuums vs Molarity Calcs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vacuums
This app assists automation engineers and systems designers in calculating parameters for vacuum handling systems. It helps determine workpiece requirements, holding force, and optimal dimensions for vacuum cups and hoses.
- Workpiece calculation
- Holding force calculation
- Vacuum cup diameter calculation
- Vacuum hose diameter calculation
- Evacuation time estimation
- Pump suction capacity calculation
- Vacuum unit converter
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Vacuum calculator for vacuum handling systems design guide suitable for automation engineering and systems designer. - workpiece calculation - holding force - vacuum cup diameter - vacuum hose diameter - evacuation time - suction capacity of pump - foam pad gripper calculation - vacuum unit convertor - vacuum flow convertor
Molarity Calcs
This app helps users quickly calculate molarity for various chemistry needs. It supports calculations for mass to volume, volume to mass, and dilutions, making it a handy tool for students and professionals.
- Mass to volume calculations
- Volume to mass calculations
- Dilution calculations
- Fast and efficient
- User-friendly interface
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Calculate mass to add to a volume, volume to add to a mass, or make a dilution. Fast.
Screenshots
Verdict
The clearest difference is rating: Molarity Calcs at 5.0 against Vacuums's 4.0. Molarity Calcs also leads on update cadence (every 4 days vs every 6 months) and iOS requirement (15.5 vs 17.6). On price, ratings volume, ads and in-app purchases 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.
Molarity Calcs holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Vacuums ships an update every 6 months, Molarity Calcs every 4 days. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.
| Parameter | Vacuums | Molarity Calcs |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.5 — better |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Amnaj Sriwilai | Jeff Schoellerman |
Customer experience
Vacuums
Molarity Calcs
In-app purchases
Vacuums
No in-app purchases
Molarity Calcs
No in-app purchases
Questions
Is Vacuums free?
Is Molarity Calcs free?
Which has better reviews, Vacuums or Molarity Calcs?
Do Vacuums or Molarity Calcs have ads?
Which is updated more often, Vacuums or Molarity Calcs?
Other comparisons
