555 Calc vs AgXcel Calculators
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.
AgXcel Calculators
Achieve your desired GPA with precise calculations. This application helps determine the exact orifice or microtube size needed for optimal pressure settings in your application.
- Target GPA calculation
- Precise orifice size determination
- Microtube size calculation
- Optimal pressure setting guidance
- Application guesswork removal
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Hit your target GPA with total precision. The AgXcel Liquid Rate Calculator takes the guesswork out of your application by finding the exact orifice or microtube size you need for optimal pressure settings.
Screenshots
Verdict
The clearest difference is rating: 555 Calc at 4.0 against AgXcel Calculators's 3.0. 555 Calc also leads on iOS requirement (11.0 vs 15.0). AgXcel Calculators's advantage is ads (none vs shown) and update cadence (fortnightly vs every 20 months). On price, ratings volume, 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 holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
555 Calc ships an update every 20 months, AgXcel Calculators fortnightly. The most recent releases landed on June 1, 2026 and August 12, 2026 respectively.
| Parameter | 555 Calc | AgXcel Calculators |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 20 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 18 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | AgXcel |
Customer experience
555 Calc
AgXcel Calculators
In-app purchases
555 Calc
No in-app purchases
AgXcel Calculators
No in-app purchases
