iSlipstick vs I
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
I
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Verdict
The clearest difference is ads: iSlipstick at none against I's shown. On price, update cadence, 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, I every 6 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.
| Parameter | iSlipstick | I |
|---|---|---|
| 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 6 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 36 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Sam Virgillo | Towa TAKEUCHI |
In-app purchases
iSlipstick
No in-app purchases
I
No in-app purchases
