# echtzeit Impulse vs Alto Shared Time Calendar

The clearest difference is review sentiment: echtzeit Impulse at 100% against Alto Shared Time Calendar's 0%. echtzeit Impulse also leads on in-app purchases (none vs 4) and iOS requirement (13.0 vs 18.0). Alto Shared Time Calendar's advantage is update cadence (every 5 days vs every 23 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Alto Shared Time Calendar sells 4 one-off in-app purchases. echtzeit Impulse asks for nothing beyond the download.

echtzeit Impulse ships an update every 23 months, Alto Shared Time Calendar every 5 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | echtzeit Impulse | Alto Shared Time Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/alto-shared-time-calendar/id6670268848/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 17 MB | 13 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Uhlmann](https://appshunter.io/developer/1571520408) | [System Operator LLC](https://appshunter.io/developer/1847669767) |

## What reviewers say

### echtzeit Impulse

[App page](https://appshunter.io/ios/app/echtzeit-impulse/id1571520406)

Access current topics and biblical themes on your smartphone. This app allows you to read content offline, share, comment, and print articles. It encourages reflection on faith and daily Christian living.

**Highlights:** Access current topics, Offline content access, Share and comment features, Print articles, Biblical themes exploration, Daily Christian living guidance

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

**In-app purchases:** none


### Alto Shared Time Calendar

[App page](https://appshunter.io/ios/app/alto-shared-time-calendar/id6670268848)

Easily create a shared calendar that shows your availability as busy or free. Share this summary calendar with others to let them know when you're available, or view their availability to coordinate plans.

**Highlights:** Create summary Busy/Free calendar, Share availability with others, View others' availability, Integrates all your calendars, Coordinate plans easily

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A thank you | $2.99 | one-time |
| A thank you | $4.99 | one-time |
| Alto Calendar Pro | $5.99 | one-time |
| A thank you | $9.99 | one-time |


## Frequently asked questions

### Is echtzeit Impulse free?

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

### Is Alto Shared Time Calendar free?

Alto Shared Time Calendar is free to download, with in-app purchases available.

### Do echtzeit Impulse or Alto Shared Time Calendar have ads?

Neither echtzeit Impulse nor Alto Shared Time Calendar shows ads.

### Which is updated more often, echtzeit Impulse or Alto Shared Time Calendar?

echtzeit Impulse ships an update every 23 months, and Alto Shared Time Calendar every 5 days. Most recently, echtzeit Impulse was updated on October 24, 2026 and Alto Shared Time Calendar on October 27, 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.*