# LunaSolCal vs K4us German Keyboard

The clearest difference is update cadence: LunaSolCal at every 2 months against K4us German Keyboard's every 19 months. K4us German Keyboard's advantage is price ($0.99 vs $4.99) and iOS requirement (15.6 vs 17.0). On review sentiment, ads, in-app purchases and device support there is nothing between them.

LunaSolCal costs $4.99 and K4us German Keyboard $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LunaSolCal ships an update every 2 months, K4us German Keyboard every 19 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | LunaSolCal | K4us German Keyboard |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.9 (1.2K ratings)](https://appshunter.io/ios/app/lunasolcal/id390175338/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 95.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 19 months |
| Monetization | **Free** | Paid |
| Size | 64 MB | 3 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Volker Voecking Software Engineering](https://appshunter.io/developer/390175341) | [Toshihiro Nakane](https://appshunter.io/developer/6799290769) |

## What reviewers say

### LunaSolCal

[App page](https://appshunter.io/ios/app/lunasolcal/id390175338)

This app calculates precise times for sun and moon events, including sunrise, sunset, moonrise, and moonset, for any location and date. It also provides detailed astronomical data and tracks celestial movements. View daily information in the notification center.

**Highlights:** Sunrise and sunset times, Moonrise and moonset times, Day length calculation, Moon phase tracking, Twilight times (civil, nautical, astronomical), Solar and lunar eclipse dates, Location-based calculations via GPS or city database

**Features:** iPhone Duo support

**In-app purchases:** none

**What reviewers like**

- 👍 Great app
- 🚀 Accurate and reliable information
- 💡 Useful for photography and planning
- 👍 Easy to use and navigate
- 👍 Comprehensive data and features

**What reviewers complain about**

- 🐛 Notifications/alarms not working consistently
- 🐛 Occasional crashes or bugs
- 🔧 Place/location selection could be improved

**Reported bugs**

- Notifications not working properly
- Crashes when using map layer select

**Requested features**

- Add lockscreen widget
- Implement automatic light/dark mode switching
- Integrate with calendar for event planning


### K4us German Keyboard

[App page](https://appshunter.io/ios/app/k4us-german-keyboard/id978720142)

This keyboard app offers an original German layout for iPhone and iPad, featuring dedicated arrow keys and easy access to special German characters like ä, ö, ü, and ß. It also includes PC-like ten keys for iPad users and allows users to disable key sounds through its settings.

**Highlights:** Original German keyboard layout, Dedicated arrow keys, Easy input for ä, ö, ü, ß, iPad ten-key layout, Customizable key sound

**In-app purchases:** none


## Frequently asked questions

### Is LunaSolCal free?

LunaSolCal costs $4.99, with no in-app purchases.

### Is K4us German Keyboard free?

K4us German Keyboard costs $0.99, with no in-app purchases.

### Do LunaSolCal or K4us German Keyboard have ads?

Neither LunaSolCal nor K4us German Keyboard shows ads.

### Which is updated more often, LunaSolCal or K4us German Keyboard?

LunaSolCal ships an update every 2 months, and K4us German Keyboard every 19 months. Most recently, LunaSolCal was updated on November 6, 2026 and K4us German Keyboard on November 3, 2026.

---

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