# Calculator # vs Timberlog

The clearest difference is update cadence: Timberlog at every 2 weeks against Calculator #'s every 2 months. Timberlog also leads on review sentiment (86% vs 60%). Calculator #'s advantage is ratings volume (36K vs 34) and iOS requirement (12.1 vs 15.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 per month and Timberlog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Calculator # against 4.7 for Timberlog. That said, the two scores are not equally well evidenced: Calculator # has 36K ratings behind it against 34, so its average is the more settled of the two. Written reviews are what separate them: 60% of Calculator #'s written reviews are positive against 86% of Timberlog's.

Calculator # ships an update every 2 months, Timberlog every 2 weeks. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Calculator # | Timberlog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (36K ratings)](https://appshunter.io/ios/app/calculator/id458535080/reviews) | **[4.7 (34 ratings)](https://appshunter.io/ios/app/timberlog-log-scale-calc/id1667253703/reviews)** |
| Number of ratings | **36K** | 34 |
| Positive reviews | 60.0% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 83 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [Bojan Zalar](https://appshunter.io/developer/1667253705) |

## What reviewers say

### Calculator #

[App page](https://appshunter.io/ios/app/calculator/id458535080)

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

**Highlights:** Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, Mathematical Display, Equation Solvers, 2D Graphing, Algebraic Functions

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Upgrade 1 Month | $1.49 | per month |
| PRO Upgrade 3 Months | $2.99 | per 3 months |
| PRO + Recognition 1 Month | $4.99 | per month |
| PRO + Recognition 3 Months | $11.99 | per 3 months |
| 250 AI Recognition & Queries | $0.99 | one-time |
| 600 AI Recognition & Queries | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Powerful functionality
- 💡 Helpful for math classes
- ⭐ Great for students
- 👌 Works like a real calculator

**What reviewers complain about**

- 🔍 Confusing interface after update
- 📢 Too many intrusive ads
- 💰 Paywall for advanced features
- 🐛 Incorrect calculations
- 🔇 Loud audio ads

**Reported bugs**

- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers

**Requested features**

- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features


### 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 |


## Frequently asked questions

### Is Calculator # free?

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

### Is Timberlog free?

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

### Which has better reviews, Calculator # or Timberlog?

Timberlog is rated higher. Calculator # averages 4.6 out of 5 from 36K ratings, while Timberlog averages 4.7 from 34 ratings.

### Do Calculator # or Timberlog have ads?

Both Calculator # and Timberlog show ads.

### Which is updated more often, Calculator # or Timberlog?

Calculator # ships an update every 2 months, and Timberlog every 2 weeks. Most recently, Calculator # was updated on September 26, 2026 and Timberlog on September 21, 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.*