Comparison

iSlipstick RF vs Bytmark

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

Bytmark

This app helps you save, organize, and easily find your saved links. You can set reminders for any bookmark to ensure you revisit important content. It offers a free starting point with optional premium features.

Highlights
  • Save and organize links
  • Set reminders for bookmarks
  • Easy link retrieval
  • Free to start
  • Optional subscription plans
Features
Read full description

Bytmark helps you save and organize your favorite links in one place. Whether it's an article, video, or resource you want to revisit later, Bytmark keeps your bookmarks clean, accessible, and easy to manage — and reminds you to go back to what matters. Create collections to group related bookmarks, add personal notes, and personalize your collection covers. Choose a cover image from one of your bookmarks or combine up to four icons to give your collection a unique look. You can set reminders on any bookmark to revisit it at the right time, import bookmarks from other supported apps, back up your collections anytime, and share them publicly to showcase your favorite finds with others. Key Features: • Save and organize bookmarks into collections • Add notes to bookmarks or collections • Personalize collection covers with images or icons • Set one-time or repeating reminders on any bookmark • Auto-reminders on collections — every new save gets scheduled automatically • Import bookmarks from other apps • Back up and restore your collections easily • Share public collections with a single link • Clean, simple, and fast interface • Ghost Share – Protect your privacy when sharing social links

Screenshots

iSlipstick RF4 screens
Bytmark4 screens

Verdict

The call

The clearest difference is in-app purchases: iSlipstick RF at none against Bytmark's 3. Bytmark's advantage is update cadence (every 4 days vs every 10 months) and rating (5.0 vs 4.7). On price, review sentiment, ratings volume and ads 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. Bytmark sells 3 in-app purchases, starting at $2.99 per month. iSlipstick RF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Bytmark holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

iSlipstick RF ships an update every 10 months, Bytmark every 4 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
iSlipstick RF versus Bytmark: the parameters behind the verdict, then further details
ParameteriSlipstick RFBytmark
PriceFreeFree
Rating4.7 (3 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 10 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone
Requires iOS16.616.4 — better
Further details — not scored
Size43 MB78 MB
Age rating4+4+
DeveloperSam VirgilloAlisha Apps LLC

Customer experience

iSlipstick RF

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

Bytmark

All ratings2 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

3 purchases

Bytmark

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Annual Subscription$25.991 Year
One-time1
  • Bytmark Pro - Lifetime$56.99

Questions

Is iSlipstick RF free?
iSlipstick RF is free to download, with no in-app purchases.
Is Bytmark free?
Bytmark is free to download, with in-app purchases available.
Which has better reviews, iSlipstick RF or Bytmark?
Bytmark is rated higher. iSlipstick RF averages 4.7 out of 5 from 3 ratings, while Bytmark averages 5.0 from 2 ratings.
Do iSlipstick RF or Bytmark have ads?
Neither iSlipstick RF nor Bytmark shows ads.
Which is updated more often, iSlipstick RF or Bytmark?
iSlipstick RF ships an update every 10 months, and Bytmark every 4 days. Most recently, iSlipstick RF was updated on October 16, 2026 and Bytmark on October 7, 2026.

Other comparisons