# SunGuard vs CalmTide

The clearest difference is update cadence: SunGuard at weekly against CalmTide's every 3 weeks. SunGuard also leads on iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SunGuard sells 1 one-off in-app purchase and CalmTide sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

SunGuard ships an update weekly, CalmTide every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SunGuard | CalmTide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 52 MB | 10 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Patrick Schmutz](https://appshunter.io/developer/1893155691) | [Michael Smith](https://appshunter.io/developer/1893971383) |

## What reviewers say

### SunGuard

[App page](https://appshunter.io/ios/app/sunguard-timer/id6762154189)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SunGuard Pro | $8.99 | one-time |


### CalmTide

[App page](https://appshunter.io/ios/app/calmtide-cortisol-tracker/id6776101012)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is SunGuard free?

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

### Is CalmTide free?

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

### Do SunGuard or CalmTide have ads?

Neither SunGuard nor CalmTide shows ads.

### Which is updated more often, SunGuard or CalmTide?

SunGuard ships an update weekly, and CalmTide every 3 weeks. Most recently, SunGuard was updated on October 25, 2026 and CalmTide 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.*