555 Calc vs eCert Wallet
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.
eCert Wallet
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eCert Wallet Secure digital wallet for all your trades and safety certificates eCert Wallet has been specifically designed to provide you with a Secure Digital Wallet for all your Safety and Trades Certificates. eCert Wallet helps you easily manage: - Add and Edit your Personal and Professional Information - Expiry dates of your Certificates - Choose to directly email safety and Trades Certificates requested by your employee or Union - Receive news and job posting from your companies and unions -Track the hours you work (Timesheet)
Screenshots
Verdict
The clearest difference is ads: eCert Wallet at none against 555 Calc's shown. eCert Wallet also leads on update cadence (every 5 days vs every 20 months). On price, in-app purchases, device support and iOS requirement 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 ships an update every 20 months, eCert Wallet every 5 days. The most recent releases landed on September 27, 2026 and October 6, 2026 respectively.
| Parameter | 555 Calc | eCert Wallet |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 20 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 118 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | GLOBIT LAB SEQUENCE S.R.L. |
In-app purchases
555 Calc
No in-app purchases
eCert Wallet
No in-app purchases
Questions
Is 555 Calc free?
Is eCert Wallet free?
Do 555 Calc or eCert Wallet have ads?
Which is updated more often, 555 Calc or eCert Wallet?
Other comparisons
