Comparison

iSlipstick RF vs Karax

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

Karax

This intelligent assistant streamlines meeting management by summarizing agendas, capturing real-time discussions and decisions, and organizing action items. It aims to enhance team operations and ensure every meeting is productive and well-documented.

Highlights
  • Instant agenda summaries
  • Real-time discussion capture
  • Action item management
  • Seamless integrations
  • Mobile accessibility
  • Effortless documentation
Read full description

KaraX - Your AI Assistant for Meetings, Work and Productivity KaraX helps you manage meetings, tasks, notes, and daily work with the power of AI. With Aura, your built in AI assistant, you can record meetings, get summaries, track action items, chat with AI, and stay organized in one place. What You Can Do with KaraX • Record and transcribe meetings with AI • Get instant meeting summaries and action items • Ask Aura to help with planning, research, and daily tasks • Chat with AI for work, ideas, and productivity • Organize conversations, meetings, and projects in one place • Connect tools like GitHub, Outlook, HubSpot, and more • Access your recent chats, meetings, and AI workflows easily Meet Aura, Your AI Assistant Aura helps you save time by handling repetitive work and organizing important information for you. Use Aura to: • Summarize meetings • Track tasks and follow ups • Answer questions from your workspace data • Help with planning and productivity • Stay focused and organized Built for Modern Teams Whether you're working solo or with a team, KaraX helps you move faster and stay productive with AI powered assistance. Focus on important work. Let Aura handle the rest.

Screenshots

iSlipstick RF4 screens
Karax4 screens

Verdict

The call

The clearest difference is update cadence: Karax at monthly against iSlipstick RF's every 10 months. Karax also leads on rating (5.0 vs 4.7) and device support (3 vs 1). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Karax 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, Karax monthly. The most recent releases landed on October 23, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
iSlipstick RF versus Karax: the parameters behind the verdict, then further details
ParameteriSlipstick RFKarax
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 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.6 — better17.0
Further details — not scored
Size43 MB8 MB
Age rating4+4+
DeveloperSam Virgilloc3alabs

Customer experience

iSlipstick RF

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

Karax

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iSlipstick RF

No in-app purchases

None

Karax

No in-app purchases

Questions

Is iSlipstick RF free?
iSlipstick RF is free to download, with no in-app purchases.
Is Karax free?
Karax is free to download, with no in-app purchases.
Which has better reviews, iSlipstick RF or Karax?
Karax is rated higher. iSlipstick RF averages 4.7 out of 5 from 3 ratings, while Karax averages 5.0 from 2 ratings.
Do iSlipstick RF or Karax have ads?
Neither iSlipstick RF nor Karax shows ads.
Which is updated more often, iSlipstick RF or Karax?
iSlipstick RF ships an update every 10 months, and Karax monthly. Most recently, iSlipstick RF was updated on October 23, 2026 and Karax on September 29, 2026.

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