# Anchor Mobile vs CalmSignal

The clearest difference is in-app purchases: Anchor Mobile at none against CalmSignal's 4. Anchor Mobile also leads on iOS requirement (13.0 vs 16.6). CalmSignal's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. CalmSignal sells 4 in-app purchases, starting at $5.99 per month. Anchor Mobile asks for nothing beyond the download.

Anchor Mobile ships an update every 2 weeks, CalmSignal every 5 days. The most recent releases landed on September 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Anchor Mobile | CalmSignal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 21 MB | 22 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [MEDISMARTS LIMITED](https://appshunter.io/developer/1674824580) | [GRIT TECHNOLOGIES](https://appshunter.io/developer/1829544016) |

## What reviewers say

### Anchor Mobile

[App page](https://appshunter.io/ios/app/anchor-mobile/id6737345689)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalmSignal

[App page](https://appshunter.io/ios/app/calmsignal/id6753912940)

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Individual | $5.99 | per month |
| Premium Family | $14.99 | per month |
| Premium Individual Yearly | $59.99 | per year |
| Premium Family Yearly | $149.99 | per year |


## Frequently asked questions

### Is Anchor Mobile free?

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

### Is CalmSignal free?

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

### Do Anchor Mobile or CalmSignal have ads?

Neither Anchor Mobile nor CalmSignal shows ads.

### Which is updated more often, Anchor Mobile or CalmSignal?

Anchor Mobile ships an update every 2 weeks, and CalmSignal every 5 days. Most recently, Anchor Mobile was updated on September 10, 2026 and CalmSignal on September 25, 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.*