# Professor Processus vs IDL Attendance

The clearest difference is in-app purchases: Professor Processus at none against IDL Attendance's 3. Professor Processus also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). IDL Attendance's advantage is update cadence (every 4 days vs every 6 months). On price and device support there is nothing between them.

Both are free to download. IDL Attendance sells 3 in-app purchases, starting at $0.99 per month. Professor Processus asks for nothing beyond the download.

Professor Processus ships an update every 6 months, IDL Attendance every 4 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Professor Processus | IDL Attendance |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 4 days** |
| Size | 82 MB | 64 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Associacao Educacional dos Trabalhadores de Brasilia](https://appshunter.io/developer/1488321104) | [Duygu Ceylan Kaya](https://appshunter.io/developer/1877030970) |

## What reviewers say

### Professor Processus

[App page](https://appshunter.io/ios/app/professor-processus/id1508530757)

**Features:** macOS Compatibility

**In-app purchases:** none


### IDL Attendance

[App page](https://appshunter.io/ios/app/idl-attendance-roll-call/id6760389433)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Premium Monthly | $0.99 | per month |
| Student Premium Yearly | $5.99 | per year |
| Student Premium Lifetime | $14.49 | one-time |


## Frequently asked questions

### Is Professor Processus free?

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

### Is IDL Attendance free?

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

### Do Professor Processus or IDL Attendance have ads?

IDL Attendance shows ads; Professor Processus does not.

### Which is updated more often, Professor Processus or IDL Attendance?

Professor Processus ships an update every 6 months, and IDL Attendance every 4 days. Most recently, Professor Processus was updated on November 3, 2026 and IDL Attendance on October 25, 2026.

---

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