# Simple Sleep Timer for Babies vs GreatDays

The clearest difference is price: GreatDays at Free against Simple Sleep Timer for Babies's $4.99. GreatDays also leads on device support (4 vs 2) and iOS requirement (13.0 vs 18.0). On update cadence, ads and in-app purchases there is nothing between them.

GreatDays is free to download; Simple Sleep Timer for Babies costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Sleep Timer for Babies ships an update every 6 months, GreatDays every 5 months. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Simple Sleep Timer for Babies | GreatDays |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 2 MB | 8 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Talkabout Design LLC](https://appshunter.io/developer/913695621) | [远平 张](https://appshunter.io/developer/1158542410) |

## What reviewers say

### Simple Sleep Timer for Babies

[App page](https://appshunter.io/ios/app/simple-sleep-timer-for-babies/id1479923124)

**Features:** Apple Watch app

**In-app purchases:** none


### GreatDays

[App page](https://appshunter.io/ios/app/greatdays/id1513887298)

This app allows you to add important life events directly to your Apple Watch. It calculates the remaining days until these events, with support for various complications to view information at a glance.

**Highlights:** Add important life days to Apple Watch, Calculate remaining days until events, Supports multiple watch complications, Independent Apple Watch app functionality, View event information at a glance

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Simple Sleep Timer for Babies free?

Simple Sleep Timer for Babies costs $4.99, with no in-app purchases.

### Is GreatDays free?

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

### Do Simple Sleep Timer for Babies or GreatDays have ads?

Neither Simple Sleep Timer for Babies nor GreatDays shows ads.

### Which is updated more often, Simple Sleep Timer for Babies or GreatDays?

Simple Sleep Timer for Babies ships an update every 6 months, and GreatDays every 5 months. Most recently, Simple Sleep Timer for Babies was updated on October 25, 2026 and GreatDays on October 9, 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.*