# OpenTopo vs Lezec Logbook

The clearest difference is in-app purchases: OpenTopo at none against Lezec Logbook's 3. Lezec Logbook's advantage is update cadence (every 5 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lezec Logbook sells 3 one-off in-app purchases. OpenTopo asks for nothing beyond the download.

OpenTopo ships an update every 2 months, Lezec Logbook every 5 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OpenTopo | Lezec Logbook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 12 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UX Fans s.r.o.](https://appshunter.io/developer/1438523671) | [Toma Kuhn](https://appshunter.io/developer/1802020696) |

## What reviewers say

### OpenTopo

[App page](https://appshunter.io/ios/app/opentopo/id1465778038)

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

**In-app purchases:** none


### Lezec Logbook

[App page](https://appshunter.io/ios/app/lezec-logbook/id6743238793)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One beer | $1.99 | one-time |
| Two beers | $3.99 | one-time |
| Three beers | $5.99 | one-time |


## Frequently asked questions

### Is OpenTopo free?

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

### Is Lezec Logbook free?

Lezec Logbook is free to download, with in-app purchases available.

### Do OpenTopo or Lezec Logbook have ads?

Neither OpenTopo nor Lezec Logbook shows ads.

### Which is updated more often, OpenTopo or Lezec Logbook?

OpenTopo ships an update every 2 months, and Lezec Logbook every 5 weeks. Most recently, OpenTopo was updated on November 6, 2026 and Lezec Logbook on October 30, 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.*