# ProID vs Calendar Clock

The clearest difference is price: ProID at Free against Calendar Clock's $0.99. ProID also leads on update cadence (monthly vs every 41 months) and review sentiment (20% vs 0%). On ads, in-app purchases and device support there is nothing between them.

ProID is free to download; Calendar Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProID ships an update monthly, Calendar Clock every 41 months. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ProID | Calendar Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/proid/id1438554444/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **20.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 41 months |
| Monetization | **Free** | Paid |
| Size | 72 MB | 4 MB |
| Requires iOS | **15.5** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Servico Federal de Processamento de Dados (SERPRO)](https://appshunter.io/developer/529883044) | [Systemiko Inc.](https://appshunter.io/developer/680630947) |

## What reviewers say

### ProID

[App page](https://appshunter.io/ios/app/proid/id1438554444)

Modernize sua carteira profissional migrando-a do papel ou plástico para o seu celular. Obtenha uma identidade digital com fé pública, garantindo segurança e credibilidade. Acesse informações do seu conselho e comprove seu vínculo profissional facilmente.

**Highlights:** Digital professional ID cards, Secure professional verification, Access to institutional pages, Receive messages from councils, Generate PDF for proof of affiliation, QR Code validation

**In-app purchases:** none


### Calendar Clock

[App page](https://appshunter.io/ios/app/calendar-clock/id1451445740)

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

**Highlights:** All-in-one screen display, Year, month, week, day, hour, minute, second, Switchable theme colors (dark, light, green, blue), Disables device sleep mode, Acts as a desk clock

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProID free?

ProID is free to download, with no in-app purchases.

### Is Calendar Clock free?

Calendar Clock costs $0.99, with no in-app purchases.

### Do ProID or Calendar Clock have ads?

Neither ProID nor Calendar Clock shows ads.

### Which is updated more often, ProID or Calendar Clock?

ProID ships an update monthly, and Calendar Clock every 41 months. Most recently, ProID was updated on October 6, 2026 and Calendar Clock on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*