Comparison

RC Circuit vs Weeklet

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Weeklet

Features
Read full description

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

RC Circuit4 screens
Weeklet4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RC Circuit sells 1 one-off in-app purchase. Weeklet asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 7 level
RC Circuit versus Weeklet: the parameters behind the verdict, then further details
ParameterRC CircuitWeeklet
PriceFreeFree
Rating4.8 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyEvery 6 monthsEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS12.0 — better26.0
Further details — not scored
Size16 MB12 MB
Age rating4+4+
DeveloperSiu Yuen HoHiroaki Matsuno

In-app purchases

1 purchases

RC Circuit

One-time1
  • Unlock Pro features$0.99
None

Weeklet

No in-app purchases

Questions

Is RC Circuit free?
RC Circuit is free to download, with in-app purchases available.
Is Weeklet free?
Weeklet is free to download, with no in-app purchases.
Do RC Circuit or Weeklet have ads?
Neither RC Circuit nor Weeklet shows ads.
Which is updated more often, RC Circuit or Weeklet?
RC Circuit ships an update every 6 months, and Weeklet every 6 months. Most recently, RC Circuit was updated on October 5, 2026 and Weeklet on October 12, 2026.

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