iSlipstick vs Vacuums
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSlipstick
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.
- 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)
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iSlipstick is a collection of commonly used electronic formula calculators and value converters. Included: Ohm's law calculator Op-Amp gain calculator LC circuit resonate frequency calculator Impedance and phase calculator for both series and parallel RLC circuits Parallel resistance calculator for up to six resistors dBm to voltage and power calculator for 50, 75 and 600 ohm loads Convert dBV to volts, dBW to watts and dBuV to microvolts with the dB converter. This converter will also convert the respective value to dB Resistor Calculator for 4 or 5 band resistors and SMD types Time Constant calculator for R - C and R - L networks. Length, Area, Volume, Capacity and Weight converters to go to and from metric and imperial units and within the same standard. Voltage Converter RMS to Peak and Peak-to-Peak and vice-versa. Features: iSlipstick's unique keyboard makes it easy to enter values without having to jump from one keyboard mode to another Numeric input can be American or European standard Re-orderable tables allow you to put the most frequently used functions where you will find them quickly iSlipstick has been tested on iOS 12.0 thru iOS 15.1
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
Screenshots
Verdict
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.
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.
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.
| Parameter | iSlipstick | Vacuums |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 36 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Virgillo | Amnaj Sriwilai |
Customer experience
iSlipstick
Vacuums
In-app purchases
iSlipstick
No in-app purchases
Vacuums
No in-app purchases
