555 Calc vs Innovation Vent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
555 Calc
This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.
- Calculate resistor values
- Input frequency
- Input duty ratio
- Input capacitor value
- Timer IC 555 circuit design
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This App calculates registors value, when designing the circuit using Timer IC 555. How to (1) Input Frequency value. (2) Input Duty Ratio. (3) Input C1 Value. (4) Touch ‘Calculate’ button. (5) Registors value will be displayed. Note. * Set Duty Ratio to 50 ~ 99. * If you set Duty Ratio to 50, R1 value will be set to 0.
Innovation Vent
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Innovation Vent application offers possible most convenient interface among all currently available regulators. It offers: - easy configuration without the need to disassembly, - clear presentation on your smartphone display, - configuration portability between devices. Application gives you quick and easy way to read and write of all parameters on the device.
Screenshots
Verdict
The clearest difference is ads: Innovation Vent at none against 555 Calc's shown. Innovation Vent also leads on update cadence (every 7 months vs every 20 months). 555 Calc's advantage is iOS requirement (11.0 vs 15.3). On price, 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.
555 Calc ships an update every 20 months, Innovation Vent every 7 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | 555 Calc | Innovation Vent |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 20 months | Every 7 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.3 |
| Further details — not scored | ||
| Size | 18 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | GRUPA Slawomir Chelminski |
In-app purchases
555 Calc
No in-app purchases
Innovation Vent
No in-app purchases
Questions
Is 555 Calc free?
Is Innovation Vent free?
Do 555 Calc or Innovation Vent have ads?
Which is updated more often, 555 Calc or Innovation Vent?
Other comparisons
