# Simple Sleep Timer for Babies vs eCall C

The clearest difference is price: eCall C at Free against Simple Sleep Timer for Babies's $4.99. eCall C also leads on update cadence (every 3 months vs every 6 months) and iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

eCall C 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, eCall C every 3 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Simple Sleep Timer for Babies | eCall C |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 2 MB | 34 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Talkabout Design LLC](https://appshunter.io/developer/913695621) | [Otis High Rise Elevator (Shanghai) Co.,Ltd.](https://appshunter.io/developer/1404205720) |

## 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


### eCall C

[App page](https://appshunter.io/ios/app/ecall-c/id6460589258)

**Features:** macOS Compatibility

**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 eCall C free?

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

### Do Simple Sleep Timer for Babies or eCall C have ads?

Neither Simple Sleep Timer for Babies nor eCall C shows ads.

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

Simple Sleep Timer for Babies ships an update every 6 months, and eCall C every 3 months. Most recently, Simple Sleep Timer for Babies was updated on October 18, 2026 and eCall C on October 10, 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.*