# Certificate24 vs Caffeinated Calendar

The clearest difference is rating: Caffeinated Calendar at 4.0 against Certificate24's 3.0. Caffeinated Calendar also leads on iOS requirement (13.0 vs 15.0). Certificate24's advantage is in-app purchases (none vs 8). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Caffeinated Calendar sells 8 in-app purchases, starting at $4.99 per month. Certificate24 asks for nothing beyond the download.

Caffeinated Calendar holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Certificate24 ships an update weekly, Caffeinated Calendar every 5 days. The most recent releases landed on October 14, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Certificate24 | Caffeinated Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/certificate24/id6463716688/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/caffeinated-calendar/id6759939966/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 309 MB | 37 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Astra Iridium s.r.l.](https://appshunter.io/developer/1606492514) | [Caffeinated Softworks LLC](https://appshunter.io/developer/1879624762) |

## What reviewers say

### Certificate24

[App page](https://appshunter.io/ios/app/certificate24/id6463716688)

Streamline and secure your document workflows with a digital signature solution that integrates with a self-hosted AI-driven digital workplace. Offers on-premises operation for maximum data control and security, with a sandbox feature for enterprise testing.

**Highlights:** Digital document signature, Nextcloud Hub integration, On-premises operation, Sandbox feature for enterprise, Teams-style document handling, Mobile document management

**Features:** macOS Compatibility

**In-app purchases:** none


### Caffeinated Calendar

[App page](https://appshunter.io/ios/app/caffeinated-calendar/id6759939966)

Aggregate and manage all your calendars in one place with powerful filtering and task management. Customize your view to hide or dim events, connect multiple account types, and utilize quick add features. Includes widgets, recurrence options, and offline access.

**Highlights:** Aggregate multiple calendar accounts, Customizable event filtering, Integrated task management, Natural language quick add, Multiple calendar view options, Home screen widgets, Offline access

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Account (Monthly) | $4.99 | per month |
| Duo Account (Monthly) | $7.99 | per month |
| Family Account (Monthly) | $14.99 | per month |
| Friends & Family Account (Monthly) | $19.99 | per month |
| Individual Account (Annual) | $49.99 | per year |
| Duo Account (Annual) | $79.99 | per year |
| Family Account (Annual) | $149.99 | per year |
| Friends & Family (Annual) | $199.99 | per year |


## Frequently asked questions

### Is Certificate24 free?

Certificate24 is free to download, with no in-app purchases.

### Is Caffeinated Calendar free?

Caffeinated Calendar is free to download, with in-app purchases available.

### Which has better reviews, Certificate24 or Caffeinated Calendar?

Caffeinated Calendar is rated higher. Certificate24 averages 3.0 out of 5 from 2 ratings, while Caffeinated Calendar averages 4.0 from 2 ratings.

### Do Certificate24 or Caffeinated Calendar have ads?

Neither Certificate24 nor Caffeinated Calendar shows ads.

### Which is updated more often, Certificate24 or Caffeinated Calendar?

Certificate24 ships an update weekly, and Caffeinated Calendar every 5 days. Most recently, Certificate24 was updated on October 14, 2026 and Caffeinated Calendar on October 28, 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.*