Comparison

iSlipstick RF vs SimpleLists

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

Head to head
About

iSlipstick RF

This app provides a comprehensive suite of calculators and converters specifically designed for radio frequency (RF) engineers and technicians. It includes tools for path loss, antenna gain, intermodulation, and standard electrical calculations, along with various unit conversions.

Highlights
  • RF-specific calculators
  • Standard electrical calculators
  • Unit converters
  • Path loss calculation
  • Intermodulation analysis
  • Antenna gain and beamwidth
Features
Read full description

iSlipstick RF iSlipstick RF contains all of the functionality of the standard iSlipstick plus many functions specifically for RF work. RF Calculators included with iSlipstick RF are: PATH LOSS – Enter all of the RF link parameters such as transmitter output power, antenna gain, cable loss, distance and frequency to find the actual RF level at the receiver. MICROWAVE DISH BEAMWIDTH & GAIN – Enter the dish size, frequency and efficiency to find the 3 dB beamwidth and antenna gain. WAVELENGTH – Metric & U.S. RETURN LOSS / VSWR – Enter forward and reflected power to find VSWR, reflection coefficient and return loss. FRESNEL ZONE – Enter link distance, obstacle distance and frequency to find the 60% and 80% zone radii. This calculator also provides a visual display of ground clearance. VELOCITY FACTOR (VOP) – Enter the dielectric constant of a coax to find the Velocity of Propagation and enter the cable length to find the propagation delay. This calculator can also find the necessary cable length for a given delay and VOP. INTERMODULATION – Enter up to six frequencies to find the 2nd, 3rd, 5th and 7th intermod products that can be created. A 'hit' window can be set to eliminate out of band results. I.F. FREQUENCY – Enter the incoming carrier frequency and 1st local oscillator frequency to find the resulting I.F. and whether the spectrum is inverted or normal. This is a great calculator when working with up/down converters. INTERCEPT POINT – Once you have determined the levels of fundamental and intermodulation tones in a system, you can enter those values into this calculator to find either IP2 or IP3. Standard Calculators included in iSlipstick RF are: OHM'S LAW – Find voltage, current, resistance and power. REACTANCE – Find inductive and capacitive reactance by entering frequency and capacitance or inductance. RESONANCE – Find the resonant frequency of an inductor – capacitor pair. VOLTAGE DIVIDER – Enter the voltage into a resistor divider network to find the output voltage. PARALLEL RESISTOR – Enter up to six resistor values to find the resultant parallel resistance. SERIES and PARALLEL RLC – Enter R, C and L of a series or parallel circuit to find the impedance and phase angle. OP-AMP – Find the gain of either an inverting or non-inverting op-amp circuit. TIME CONSTANT - Find the first 5 time constants of both RC and RL circuits. Standard Converters included in iSlipstick RF are: RESISTOR COLOR CODE – Enter a resistor value to find the color code or enter the color code to find the resistor value. SMD RESISTOR – Enter 3 digit or 4 digit SMD codes to find the resistance value. Also does EIA-96 conversion. VOLTAGE CONVERTER – Convert between RMS, average, peak and p-p values. dB CONVERTER – Convert dBm, dBV, dBW and dBuV to absolute values and vice-versa in 50, 75 and 600 ohm load. TEMPERATURE – Convert between four popular scales. PERIOD – FREQUENCY – Convert waveform period to frequency and vice-versa. LENGTH, AREA, VOLUME, CAPACITY and WEIGHT – Convert from metric to U.S. and vice-versa. Also convert within same standard. A help page is also available as a quick function guide. Tested with iOS 12.0 thru iOS 15.1

About

SimpleLists

Create and manage reusable checklists with an intuitive interface. This app offers cloud syncing for access across devices, helping you stay organized effortlessly for various personal and professional tasks.

Highlights
  • Reusable checklists
  • User-friendly interface
  • Cloud syncing
  • Customizable lists
  • Task management
Features
Read full description

Introducing Simple Lists, an app designed for creating reusable checklists that help you stay organized effortlessly. With its intuitive interface, Simple Lists transforms the way you manage checklists, making everyday planning a breeze. Key features include: - Reusable Checklists: Create, save, and edit lists that you can reuse for different tasks, allowing you to streamline your planning process. - User-Friendly Interface: Navigate through your checklists easily with a clean and minimalistic design that enhances your productivity. - Cloud Syncing: Access your lists from any device with real-time syncing, ensuring you have your tasks available whenever you need them. Simple Lists is perfect for anyone who loves to use checklists, whether you are a busy professional, a student juggling multiple responsibilities, or a parent managing family tasks. Our app caters to your organizational needs, providing the tools to help you stay on top of your priorities. The user interface of Simple Lists is designed with simplicity in mind. With just a few taps, you can create a checklist, add items, or mark them as done. The overall user experience is seamless, allowing you to focus on your tasks without distraction. Enjoy a smooth and engaging interaction that makes checklist management an enjoyable part of your routine. Download Simple Lists today and take the first step toward effortless organization! Embrace the power of checklists that work for you, not the other way around. Stay organized and simplify your life with Simple Lists—because your tasks deserve a smart solution! EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

iSlipstick RF4 screens
SimpleLists4 screens

Verdict

The call

The clearest difference is in-app purchases: iSlipstick RF at none against SimpleLists's 7. iSlipstick RF also leads on ads (none vs shown) and ratings volume (3 vs 1). SimpleLists's advantage is update cadence (every 2 months vs every 10 months) and rating (5.0 vs 4.7). On price, review sentiment 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SimpleLists sells 7 in-app purchases, starting at $2.00 per month. iSlipstick RF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SimpleLists holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

iSlipstick RF ships an update every 10 months, SimpleLists every 2 months. The most recent releases landed on September 17, 2026 and September 4, 2026 respectively.

Scorecard7 real differences · 3 level
iSlipstick RF versus SimpleLists: the parameters behind the verdict, then further details
ParameteriSlipstick RFSimpleLists
PriceFreeFree
Rating4.7 (3 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better1
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better18.6
Further details — not scored
Size43 MB41 MB
Age rating4+4+
DeveloperSam VirgilloJoe Edwards

Customer experience

iSlipstick RF

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SimpleLists

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iSlipstick RF

No in-app purchases

7 purchases

SimpleLists

Subscriptions2
  • Monthly$2.001 Month
  • Yearly$14.001 Year
One-time5
  • Mini tip$1.00
  • Plus tip$3.00
  • Pro tip$5.00
Show 2 more
  • Max tip$10.00
  • Ultra tip$15.00

Questions

Is iSlipstick RF free?
iSlipstick RF is free to download, with no in-app purchases.
Is SimpleLists free?
SimpleLists is free to download, with in-app purchases available.
Which has better reviews, iSlipstick RF or SimpleLists?
SimpleLists is rated higher. iSlipstick RF averages 4.7 out of 5 from 3 ratings, while SimpleLists averages 5.0 from 1 ratings.
Do iSlipstick RF or SimpleLists have ads?
SimpleLists shows ads; iSlipstick RF does not.
Which is updated more often, iSlipstick RF or SimpleLists?
iSlipstick RF ships an update every 10 months, and SimpleLists every 2 months. Most recently, iSlipstick RF was updated on September 17, 2026 and SimpleLists on September 4, 2026.

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