# Attendance Radar vs Zerroday

The clearest difference is monetization model: Zerroday at free against Attendance Radar's freemium. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Attendance Radar sells 2 in-app purchases, starting at $15.00 per month and Zerroday sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Attendance Radar ships an update weekly, Zerroday every 10 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Attendance Radar | Zerroday |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (15 ratings)](https://appshunter.io/ios/app/attendance-radar/id1641847583/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | **90.9% of reviews** | 88.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Freemium | **Free** |
| Size | 36 MB | 61 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Codific](https://appshunter.io/developer/792749833) | [Zerroday](https://appshunter.io/developer/1856124924) |

## What reviewers say

### Attendance Radar

[App page](https://appshunter.io/ios/app/attendance-radar/id1641847583)

Streamline student attendance tracking for educators. This app offers instant, cheat-proof Bluetooth scanning and virtual code check-ins, saving valuable teaching time. Manage any class size with detailed reports and analysis tools.

**Highlights:** Instant, cheat-proof Bluetooth attendance, Support for in-person and online classes, Manage any class size, Detailed reports and analysis, Mark students as excused or late, Import/export data via Excel

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Attendance Radar Monthly | $15.00 | per month |
| Attendance Radar Yearly | $99.00 | per year |


### Zerroday

[App page](https://appshunter.io/ios/app/zerroday/id6755754776)

This app helps users build confidence and discipline by analyzing their responses to market conditions. It provides tools for learning, reflection, and analysis based on psychological patterns, focusing on hypothetical decision-making in a safe, educational environment.

**Highlights:** AI-guided decision reflection, Hypothetical choice recording, Emotional pattern feedback, Live market reference data, Practice mode for safe learning, Learning journal and progress tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pass | $0.99 | one-time |
| Daily Pass | $0.99 | one-time |
| Monthly Plan | $2.99 | one-time |
| Safety Nets Discount | $7.99 | one-time |
| Safety Nets | $9.99 | one-time |


## Frequently asked questions

### Is Attendance Radar free?

Attendance Radar is free to download, with in-app purchases available.

### Is Zerroday free?

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

### Do Attendance Radar or Zerroday have ads?

Neither Attendance Radar nor Zerroday shows ads.

### Which is updated more often, Attendance Radar or Zerroday?

Attendance Radar ships an update weekly, and Zerroday every 10 days. Most recently, Attendance Radar was updated on November 3, 2026 and Zerroday on November 5, 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.*