# Timberlog vs Let Proof

The clearest difference is ads: Let Proof at none against Timberlog's shown. Timberlog's advantage is update cadence (weekly vs every 4 weeks) and iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Timberlog sells 1 one-off in-app purchase and Let Proof sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Timberlog ships an update weekly, Let Proof every 4 weeks. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Timberlog | Let Proof |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36 ratings)](https://appshunter.io/ios/app/timberlog-log-scale-calc/id1667253703/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 89 MB | 24 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bojan Zalar](https://appshunter.io/developer/1667253705) | [george robertson](https://appshunter.io/developer/1846443996) |

## What reviewers say

### Timberlog

[App page](https://appshunter.io/ios/app/timberlog-log-scale-calc/id1667253703)

Calculate timber volume in various units like cubic meters, cubic feet, or board feet. This tool supports multiple log scaling methods and local timber volume tables for different tree species. Easily create and share reports in Excel format.

**Highlights:** Multiple volume units (m³, ft³, board feet), Supports numerous log scaling methods, Local timber volume tables for various species, Create and share Excel reports, User-friendly data entry, Optimized for visibility in bright light

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional Version | $39.99 | one-time |


### Let Proof

[App page](https://appshunter.io/ios/app/let-proof/id6758402955)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LetProof Renter Monthly | $2.99 | per month |
| LetProof Landlord Monthly | $7.99 | per month |
| LetProof Agent Monthly | $19.99 | per month |
| LetProof Renter Annual | $19.99 | per year |
| LetProof Landlord Annual | $59.99 | per year |
| LetProof Agent Annual | $149.99 | per year |


## Frequently asked questions

### Is Timberlog free?

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

### Is Let Proof free?

Let Proof is free to download, with in-app purchases available.

### Do Timberlog or Let Proof have ads?

Timberlog shows ads; Let Proof does not.

### Which is updated more often, Timberlog or Let Proof?

Timberlog ships an update weekly, and Let Proof every 4 weeks. Most recently, Timberlog was updated on October 8, 2026 and Let Proof on October 2, 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.*