RC Circuit vs keyes Bit Car
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RC Circuit
Calculate RC charging and filter circuits, including time constants and cutoff frequencies. Find component values from these parameters or get voltage at specific times. Save and share data easily.
- Calculate time constant
- Find component values
- Get voltage at time t
- Calculate cutoff frequency
- Save data to CSV
- Upload CSV via AirDrop/iCloud Drive
- Multi-language support
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This app is used to calculate the RC charging and RC filter circuit. It is suitable for hobbyist or electronic engineer. Features * Calculate time constant from R, C * Find component value R,C from time constant * Get voltage at time t in RC charging / discharging * Calculate cutoff frequency by R, C * Find component value R,C from cutoff frequency * Save data to CSV files * Upload CSV via AirDrop / iCloud Drive * Support English, Traditional Chinese, Simplified Chinese, German, French, Italian, Spanish, Portuguese, Japanese
keyes Bit Car
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这是一个用于控制keyestudio的Bit car小车的蓝牙4.0 APP
Screenshots
Verdict
The clearest difference is in-app purchases: keyes Bit Car at none against RC Circuit's 1. keyes Bit Car also leads on iOS requirement (10.1 vs 12.0). RC Circuit's advantage is update cadence (every 6 months vs every 33 months). On price, ads 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. RC Circuit sells 1 one-off in-app purchase. keyes Bit Car asks for nothing beyond the download.
RC Circuit ships an update every 6 months, keyes Bit Car every 33 months. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.
| Parameter | RC Circuit | keyes Bit Car |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 months — better | Every 33 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.1 — better |
| Further details — not scored | ||
| Size | 16 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | 克俭 左 |
In-app purchases
RC Circuit
- Unlock Pro features$0.99
keyes Bit Car
No in-app purchases
Questions
Is RC Circuit free?
Is keyes Bit Car free?
Do RC Circuit or keyes Bit Car have ads?
Which is updated more often, RC Circuit or keyes Bit Car?
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