# Sanofi Step vs Lullalog

The clearest difference is update cadence: Lullalog at every 5 days against Sanofi Step's fortnightly. Sanofi Step's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sanofi Step ships an update fortnightly, Lullalog every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sanofi Step | Lullalog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (3 ratings)](https://appshunter.io/ios/app/lullalog-baby-tracker/id6762561885/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | — | Free |
| Size | 45 MB | 49 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Socialtitli Marketing Private Limited](https://appshunter.io/developer/1717047659) | [Rohank Agarwal](https://appshunter.io/developer/1894683211) |

## What reviewers say

### Sanofi Step

[App page](https://appshunter.io/ios/app/sanofi-step/id1581801197)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lullalog

[App page](https://appshunter.io/ios/app/lullalog-baby-tracker/id6762561885)

This app helps parents track various aspects of their baby's development and care, including sleep, feeding, growth, and milestones. It offers features like one-handed operation, nursery mode, and Live Activities for easy monitoring. Designed with privacy in mind, it stores data locally by default with optional iCloud sync.

**Highlights:** Sleep tracking with Live Activity, Feeding and diaper logging, Growth tracking with WHO percentiles, Milestone checklists, Nursery Mode for nighttime use, Optional iCloud sync for co-parents, Apple Watch app and Siri Shortcuts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sanofi Step free?

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

### Is Lullalog free?

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

### Do Sanofi Step or Lullalog have ads?

Neither Sanofi Step nor Lullalog shows ads.

### Which is updated more often, Sanofi Step or Lullalog?

Sanofi Step ships an update fortnightly, and Lullalog every 5 days. Most recently, Sanofi Step was updated on November 3, 2026 and Lullalog on November 5, 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.*