# cryo1one vs NightWatch

The clearest difference is in-app purchases: cryo1one at none against NightWatch's 1. cryo1one also leads on ads (none vs shown). NightWatch's advantage is update cadence (monthly vs every 28 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. NightWatch sells 1 one-off in-app purchase. cryo1one asks for nothing beyond the download.

cryo1one ships an update every 28 months, NightWatch monthly. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | cryo1one | NightWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/cryo1one/id1386571865/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Monthly** |
| Monetization | Free | — |
| Size | 31 MB | 6 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Simplify Biz LLC](https://appshunter.io/developer/1730534022) | [Pummel Pty Ltd](https://appshunter.io/developer/1101016793) |

## What reviewers say

### cryo1one

[App page](https://appshunter.io/ios/app/cryo1one/id1386571865)

Manage your appointments and schedule for cryotherapy sessions. Easily view, add, or update bookings and receive important notifications. Sign up and manage your cryo1one experience in one convenient place.

**Highlights:** View appointment schedule, Add new appointments, Update existing bookings, Receive important alerts, Manage cryo1one schedule

**Features:** macOS Compatibility

**In-app purchases:** none


### NightWatch

[App page](https://appshunter.io/ios/app/nightwatch-sleep-tracker/id6469570238)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is cryo1one free?

cryo1one is free to download, with no in-app purchases.

### Is NightWatch free?

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

### Do cryo1one or NightWatch have ads?

NightWatch shows ads; cryo1one does not.

### Which is updated more often, cryo1one or NightWatch?

cryo1one ships an update every 28 months, and NightWatch monthly. Most recently, cryo1one was updated on October 11, 2026 and NightWatch on October 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.*