Timer 555 Calculator vs Capacitor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer 555 Calculator
Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.
- Monostable circuit pulse width calculation
- Astable circuit frequency calculation
- Component combination finder
- Save component values to CSV
- Upload CSV via AirDrop/iCloud Drive
- Multi-language support
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This app is used to calculate monostable and astable circuit. Features * Calculate pulse width of monostable circuit * Calculate frequency of astable circuit * Find out combination of components making a desire pulse width in monostable circuit * Find out combination of components making a desire frequency in astable circuit * Saving component values in CSV file * Upload generated CSV files via AirDrop or iCloud Drive * Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Russian
Capacitor
Easily determine capacitor values from color codes or calculate color codes from values. Supports both standard and SMD capacitors, providing quick and accurate conversions for electronics projects.
- Capacitor color code to value conversion
- Value to capacitor color code conversion
- SMD capacitor code to value conversion
- SMD value to EIA code calculation
- Supports standard and SMD capacitors
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The Capacitor Converter is the perfect tool for anyone working with electronics – from hobbyists and students to professional technicians. Simply select the color bands and instantly see the corresponding capacitor value. Or enter a value and let the app calculate the correct color bands automatically. SMD capacitors are fully supported as well: enter the capacitor code → the value is calculated. Enter the value → the matching EIA code is generated. The app works completely offline, is fast, intuitive, and requires no registration. Perfect for workshops, labs, education, and DIY electronics projects. Key Features: Select color bands → instantly get the capacitor value Enter a value → automatically get the correct color bands Supports SMD capacitor codes: EIA‑3, EIA‑4, and EIA‑96 Fully offline, no registration required Ideal for electronics hobbyists, students, and professionals Clean interface and fast workflow The Capacitor Converter makes working with capacitor values easier, faster, and more reliable.
Screenshots
Verdict
The clearest difference is rating: Capacitor at 4.8 against Timer 555 Calculator's 3.9. Capacitor also leads on in-app purchases (none vs 1). Timer 555 Calculator's advantage is update cadence (every 3 months vs every 40 months) and iOS requirement (13.2 vs 26.0). On price, review sentiment, ratings volume and ads 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. Timer 555 Calculator sells 1 one-off in-app purchase. Capacitor asks for nothing beyond the download.
Capacitor holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 8 and 10 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Timer 555 Calculator ships an update every 3 months, Capacitor every 40 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | Timer 555 Calculator | Capacitor |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (8 ratings) | 4.8 (10 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 | 10 — better |
| Update frequency | Every 3 months — better | Every 40 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Gerhard Lentschik |
Customer experience
Timer 555 Calculator
Capacitor
In-app purchases
Timer 555 Calculator
- Unlock Pro feature$0.99
Capacitor
No in-app purchases
Questions
Is Timer 555 Calculator free?
Is Capacitor free?
Which has better reviews, Timer 555 Calculator or Capacitor?
Do Timer 555 Calculator or Capacitor have ads?
Which is updated more often, Timer 555 Calculator or Capacitor?
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