# Clamshell vs Smart Calc+

The clearest difference is update cadence: Smart Calc+ at every 3 days against Clamshell's every 6 weeks. Smart Calc+ also leads on iOS requirement (13.4 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Clamshell ships an update every 6 weeks, Smart Calc+ every 3 days. The most recent releases landed on September 21, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Clamshell | Smart Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clamshell/id6477896729/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 8 MB | 22 MB |
| Requires iOS | 18.4 | **13.4** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Kovrazhkin](https://appshunter.io/developer/1544108014) | [Rahman Usta](https://appshunter.io/developer/1750311538) |

## What reviewers say

### Clamshell

[App page](https://appshunter.io/ios/app/clamshell/id6477896729)

Monitor the status of all your Macs from your iPhone or iPad. This app allows you to track lid and system states remotely, ensuring you're always informed about your devices. It utilizes iCloud for secure data synchronization without third-party servers.

**Highlights:** Monitor Mac lid states, Track system statuses (Awake, Sleep, etc.), Remote monitoring from iPhone/iPad, iCloud synchronization, Supports Mac desktops

**In-app purchases:** none


### Smart Calc+

[App page](https://appshunter.io/ios/app/smart-calc-plus/id6504203262)

**In-app purchases:** none


## Frequently asked questions

### Is Clamshell free?

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

### Is Smart Calc+ free?

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

### Do Clamshell or Smart Calc+ have ads?

Neither Clamshell nor Smart Calc+ shows ads.

### Which is updated more often, Clamshell or Smart Calc+?

Clamshell ships an update every 6 weeks, and Smart Calc+ every 3 days. Most recently, Clamshell was updated on September 21, 2026 and Smart Calc+ on May 17, 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.*