# Attender vs DELTAPLAN Stempel

The clearest difference is update cadence: DELTAPLAN Stempel at every 4 weeks against Attender's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Attender ships an update every 3 months, DELTAPLAN Stempel every 4 weeks. The most recent releases landed on May 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Attender | DELTAPLAN Stempel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Size | 22 MB | 21 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Attender ApS](https://appshunter.io/developer/1594156056) | [DELTAPLAN ApS](https://appshunter.io/developer/1185469116) |

## What reviewers say

### Attender

[App page](https://appshunter.io/ios/app/attender/id1594155664)

**Features:** macOS Compatibility

**In-app purchases:** none


### DELTAPLAN Stempel

[App page](https://appshunter.io/ios/app/deltaplan-stempel-ur/id6449742483)

**In-app purchases:** none


## Frequently asked questions

### Is Attender free?

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

### Is DELTAPLAN Stempel free?

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

### Do Attender or DELTAPLAN Stempel have ads?

Neither Attender nor DELTAPLAN Stempel shows ads.

### Which is updated more often, Attender or DELTAPLAN Stempel?

Attender ships an update every 3 months, and DELTAPLAN Stempel every 4 weeks. Most recently, Attender was updated on May 18, 2026 and DELTAPLAN Stempel on September 8, 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.*