# Calculator+ Photo Math Solver vs Barnacle

The clearest difference is update cadence: Barnacle at every 2 days against Calculator+ Photo Math Solver's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator+ Photo Math Solver sells 3 in-app purchases, starting at $4.99 per 7 days and Barnacle sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calculator+ Photo Math Solver ships an update weekly, Barnacle every 2 days. The most recent releases landed on November 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator+ Photo Math Solver | Barnacle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/calculator-plus-photo-math-solver/id1226646910/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Subscription | — |
| Size | 32 MB | 46 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [LYKOV STUDIO LTD](https://appshunter.io/developer/1783754094) | [Luke Wilkinson](https://appshunter.io/developer/1634252909) |

## What reviewers say

### Calculator+ Photo Math Solver

[App page](https://appshunter.io/ios/app/calculator-plus-photo-math-solver/id1226646910)

This app offers a straightforward yet capable calculator for daily use on iPhone and iPad. It includes all essential arithmetic functions and maintains a history of your computations. Enjoy features like saving, copying, and forwarding calculations, along with a dark theme and multitasking support.

**Highlights:** Simple and fast calculation, Calculation history, iPad version support, Multitasking (Split View), Save, copy, and forward calculations, Backspace button, Dark theme

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Премиум неделя | $4.99 | per 7 days |
| Премиум год | $29.99 | per year |
| Lifetime | $39.99 | one-time |


### Barnacle

[App page](https://appshunter.io/ios/app/barnacle/id6811345581)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Barnacle Unlimited | $5.99 | one-time |


## Frequently asked questions

### Is Calculator+ Photo Math Solver free?

Calculator+ Photo Math Solver is free to download, with in-app purchases available.

### Is Barnacle free?

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

### Do Calculator+ Photo Math Solver or Barnacle have ads?

Neither Calculator+ Photo Math Solver nor Barnacle shows ads.

### Which is updated more often, Calculator+ Photo Math Solver or Barnacle?

Calculator+ Photo Math Solver ships an update weekly, and Barnacle every 2 days. Most recently, Calculator+ Photo Math Solver was updated on November 6, 2026 and Barnacle on October 24, 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.*