Clamshell vs Smart Calc+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clamshell
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.
- Monitor Mac lid states
- Track system statuses (Awake, Sleep, etc.)
- Remote monitoring from iPhone/iPad
- iCloud synchronization
- Supports Mac desktops
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Clamshell goes to iPhone and iPad! This is an iOS version of the Clamshell app. It provides monitoring states of all your Macs from your iPhones and iPads that are signed in to the same iCloud account. Clamshell now supports sharing the laptop lid statuses and system statuses (Awake, Sleeping, Logging out, Restarting, Shutting down, Restarted, Shut Down, User Logged Out, App Terminated). More statuses will come in the year. No data is shared with third-party providers. Clamshell is not using any external servers but only Apple's iCloud servers. You're in full control of your data! Note for users of iMac, Mac mini, Mac Studio, and Mac Pro: Clamshell is useful for you finally! Use it to monitor statuses of your Mac desktops remotely from iPhone/iPad. Yay!
Smart Calc+
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Your ultimate tool for basic algebra, trigonometry (sin, cos), logarithms (log), and more. Perform quick and accurate calculations with a built-in history log to keep track of all your calculations.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Clamshell | Smart Calc+ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.4 | 13.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Kovrazhkin | Rahman Usta |
In-app purchases
Clamshell
No in-app purchases
Smart Calc+
No in-app purchases
