iSlipstick vs Sales Engine
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
Sales Engine
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SALES INTELLIGENCE FOR INTELLIGENT BUSINESS OWNERS Sales Engine is the first-ever all-in-one sales and marketing system to help business owners organize a predictable and profitable sales pipeline for their business. The easiest way to grow sales profitably is to “buy new customers” with your marketing dollars and employ sales intelligence and technology where one salesperson can do the work of three. If your company is trying to increase your sales, increase profitability and dominate your market, then Sales Engine is for you! All the tools you need in one platform without having to "duct-tape" multiple platforms together! Organize Lead Lists and Contact Prospects Directly From the Sales Engine App! Automatically Schedule and Organize Your Sales Calendar with Artificial Intelligence Monitor and Request Google Reviews Easier Than Ever (In The Field)! Automatically Message Leads via Voicemail, Forced Calls, SMS, emailE, FB Messenger & More! Check Sales Conversion Rates Directly On Your Phone! Join The Sales Engine Family To Use the App!
Screenshots
Verdict
The clearest difference is update cadence: iSlipstick at every 3 months against Sales Engine's every 7 months. iSlipstick also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support 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 ships an update every 3 months, Sales Engine every 7 months. The most recent releases landed on October 21, 2026 and October 5, 2026 respectively.
| Parameter | iSlipstick | Sales Engine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 36 MB | 307 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Virgillo | Blu Zeus Technologies, LLC |
In-app purchases
iSlipstick
No in-app purchases
Sales Engine
No in-app purchases
Questions
Is iSlipstick free?
Is Sales Engine free?
Do iSlipstick or Sales Engine have ads?
Which is updated more often, iSlipstick or Sales Engine?
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