# Lumix Buch vs ND+Timer

The clearest difference is ads: ND+Timer at none against Lumix Buch's shown. ND+Timer also leads on update cadence (every 2 months vs every 7 months). Lumix Buch's advantage is review sentiment (77% vs 60%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Lumix Buch sells 10 one-off in-app purchases and ND+Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Lumix Buch ships an update every 7 months, ND+Timer every 2 months. The most recent releases landed on June 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Lumix Buch | ND+Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **77.3% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 163 MB | 9 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrea Spaeth](https://appshunter.io/developer/943459572) | [Tobias Ullerich](https://appshunter.io/developer/1475365559) |

## What reviewers say

### Lumix Buch

[App page](https://appshunter.io/ios/app/lumix-buch/id943459573)

Interactive digital guides for Panasonic Lumix cameras. Learn to master your camera's features for improved photography with step-by-step instructions, images, and videos. Explore practical tips and techniques to enhance your photos.

**Highlights:** Interactive digital camera guides, Step-by-step instructions, Vergrößerbare Praxisbilder, Full-text search, Create bookmarks, Linked table of contents, Additional content (images, videos, links)

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumix FZ1000 | $19.99 | one-time |
| Lumix FZ300 | $19.99 | one-time |
| Lumix G70 | $19.99 | one-time |
| Lumix Fotoschule FZ82 | $19.99 | one-time |
| Lumix G9 - Das Buch zur Kamera | $19.99 | one-time |
| Superzoom-Fotoschule FZ1000 II | $19.99 | one-time |
| Olympus OM-D E-M10 Mark III | $19.99 | one-time |
| Lumix G91 Das Buch zur Kamera | $19.99 | one-time |
| Lumix S5 Fotoschule | $19.99 | one-time |
| Lumix TZ202 | $19.99 | one-time |


### ND+Timer

[App page](https://appshunter.io/ios/app/nd-plus-timer/id1534477340)

This app helps photographers determine correct exposure times for long exposure shots using ND filters. It includes a timer to capture the perfect moment and offers pro features through in-app purchases for enhanced functionality.

**Highlights:** Exposure time calculation with ND filters, Integrated timer for capturing moments, Notifications while device is locked, Dark mode (Pro feature), Lock screen widget with running timer (Pro feature), Dynamic Island support (Pro feature), Automatic exposure computation for multiple filters (Pro feature)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ND+Timer Pro | $1.99 | one-time |


## Frequently asked questions

### Is Lumix Buch free?

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

### Is ND+Timer free?

ND+Timer is free to download, with in-app purchases available.

### Do Lumix Buch or ND+Timer have ads?

Lumix Buch shows ads; ND+Timer does not.

### Which is updated more often, Lumix Buch or ND+Timer?

Lumix Buch ships an update every 7 months, and ND+Timer every 2 months. Most recently, Lumix Buch was updated on June 24, 2026 and ND+Timer on September 20, 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.*