RC Circuit vs Weeklet
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
Weeklet
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A week number is a serial number that identifies each week of the year with a single number. It comes in handy when you plan schedules and track project progress week by week. Weeklet shows the current week number clearly on your Home Screen and Lock Screen. Open the app to instantly browse weekly calendars of the current and upcoming weeks. Widgets can also be shown in StandBy. - Widgets in both Home Screen and Lock Screen - Browse calendars by week - Quickly check week numbers for other dates - Shows the remaining days of the week and the remaining weeks of the year graphically - Follows your settings “Calendar” and “First day of week” on Settings app - Supports Light and Dark Mode - Works with Apple Watch You can also: - Show years and quarters based on your fiscal year - Set your fiscal year’s start and label style - Choose the calendar used to calculate week numbers - Choose the start and end days of your workweek If you have feedback, feel free to contact us at the support page.
Screenshots
Verdict
The clearest difference is in-app purchases: Weeklet at none against RC Circuit's 1. RC Circuit's advantage is iOS requirement (12.0 vs 26.0). On price, update cadence, 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. Weeklet asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.
| Parameter | RC Circuit | Weeklet |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 months | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 16 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Hiroaki Matsuno |
In-app purchases
RC Circuit
- Unlock Pro features$0.99
Weeklet
No in-app purchases
Questions
Is RC Circuit free?
Is Weeklet free?
Do RC Circuit or Weeklet have ads?
Which is updated more often, RC Circuit or Weeklet?
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