# Calculator+ vs SeaRoll

The clearest difference is in-app purchases: Calculator+ at none against SeaRoll's 1. Calculator+ also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.6). SeaRoll's advantage is update cadence (every 3 weeks vs every 5 months). On price, review sentiment and ads there is nothing between them.

Both are free to download. SeaRoll sells 1 one-off in-app purchase. Calculator+ asks for nothing beyond the download.

Calculator+ ships an update every 5 months, SeaRoll every 3 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calculator+ | SeaRoll |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/calculator-plus-unit-conversion/id1540403294/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 13 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OnePercent](https://appshunter.io/developer/1536020418) | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) |

## What reviewers say

### Calculator+

[App page](https://appshunter.io/ios/app/calculator-plus-unit-conversion/id1540403294)

This advanced utility app offers a comprehensive suite of calculation and conversion tools, serving as a powerful alternative to standard device calculators. It features a sleek interface and supports a wide range of everyday and scientific computations, including unit conversions for length, area, volume, and more.

**Highlights:** General and scientific calculations, Extensive unit conversions (length, area, volume, etc.), BMI, investment, EMI, and tax calculators, Customizable graphical user interface, Calculation history log, Adjustable answer precision

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

**In-app purchases:** none


### SeaRoll

[App page](https://appshunter.io/ios/app/searoll/id6756269783)

This application provides a real-time display of a vessel's rolling angle, allowing users to record and review sessions during navigation. It's designed for simplicity and readability, enabling quick reporting and discussion of roll data.

**Highlights:** Live roll angle display, One-tap roll recording, Playback and review of recorded sessions, Export and share recordings, Simple and readable interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Logo | $0.99 | one-time |


## Frequently asked questions

### Is Calculator+ free?

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

### Is SeaRoll free?

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

### Do Calculator+ or SeaRoll have ads?

Neither Calculator+ nor SeaRoll shows ads.

### Which is updated more often, Calculator+ or SeaRoll?

Calculator+ ships an update every 5 months, and SeaRoll every 3 weeks. Most recently, Calculator+ was updated on October 16, 2026 and SeaRoll on October 15, 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.*