# iSlipstick vs Vacuums

The clearest difference is rating: iSlipstick at 5.0 against Vacuums's 4.0. iSlipstick also leads on ratings volume (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iSlipstick holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

iSlipstick ships an update every 3 months, Vacuums every 6 months. The most recent releases landed on August 12, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | iSlipstick | Vacuums |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/islipstick/id324560822/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/vacuums/id1241468166/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 36 MB | 5 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sam Virgillo](https://appshunter.io/developer/324560825) | [Amnaj Sriwilai](https://appshunter.io/developer/1241468165) |

## What reviewers say

### iSlipstick

[App page](https://appshunter.io/ios/app/islipstick/id324560822)

This app provides a suite of essential electronic formula calculators and unit converters. It simplifies complex calculations for Ohm's law, LC circuits, impedance, and more, with a user-friendly interface for quick input and reordering of frequently used tools.

**Highlights:** Ohm's law calculator, Op-Amp gain calculator, LC circuit resonance calculator, RLC circuit impedance calculator, dBm to voltage/power converter, Resistor calculator, Unit converters (metric/imperial)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Vacuums

[App page](https://appshunter.io/ios/app/vacuums/id1241468166)

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.

**Highlights:** Workpiece calculation, Holding force calculation, Vacuum cup diameter calculation, Vacuum hose diameter calculation, Evacuation time estimation, Pump suction capacity calculation, Vacuum unit converter

**In-app purchases:** none


## Frequently asked questions

### Is iSlipstick free?

iSlipstick is free to download, with no in-app purchases.

### Is Vacuums free?

Vacuums is free to download, with no in-app purchases.

### Which has better reviews, iSlipstick or Vacuums?

iSlipstick is rated higher. iSlipstick averages 5.0 out of 5 from 3 ratings, while Vacuums averages 4.0 from 1 ratings.

### Do iSlipstick or Vacuums have ads?

Neither iSlipstick nor Vacuums shows ads.

### Which is updated more often, iSlipstick or Vacuums?

iSlipstick ships an update every 3 months, and Vacuums every 6 months. Most recently, iSlipstick was updated on August 12, 2026 and Vacuums on July 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*