# Sleep Tracker AI Coach vs Lull

The clearest difference is iOS requirement: Sleep Tracker AI Coach at 17.6 against Lull's 26.0. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Sleep Tracker AI Coach sells 1 in-app purchase, starting at $1.99 per 7 days and Lull sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Sleep Tracker AI Coach against 5.0 for Lull. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Sleep Tracker AI Coach ships an update weekly, Lull every 4 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Sleep Tracker AI Coach | Lull |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sleep-tracker-ai-coach-lull/id6789690590/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/lull-breastfeeding-timer/id6803735715/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 37 MB | 23 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Kostiantyn Nevinchanyi](https://appshunter.io/developer/1532080203) | [Yu Fan](https://appshunter.io/developer/1013763574) |

## What reviewers say

### Sleep Tracker AI Coach

[App page](https://appshunter.io/ios/app/sleep-tracker-ai-coach-lull/id6789690590)

This app automatically tracks your sleep using your watch and provides a detailed sleep score with explanations. It helps identify habits affecting your sleep and offers guided techniques to fall asleep faster. An AI coach provides personalized insights and a program to improve sleep quality.

**Highlights:** Automatic sleep tracking via Apple Health, Personalized sleep score with detailed breakdown, Habit logging and pattern analysis, Guided techniques for faster sleep onset, AI-powered sleep coaching, 4-week CBT-I based sleep improvement program, App blocking during wind-down window

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lull Pro | $1.99 | per 7 days |


### Lull

[App page](https://appshunter.io/ios/app/lull-breastfeeding-timer/id6803735715)

Effortlessly track baby's feeding times with a simple interface designed for late-night use. Monitor intervals, set reminders, and log pumping sessions. Supports multiple babies and offers quick access via widgets and Apple Watch.

**Highlights:** One-tap feeding start/stop, At-a-glance feed timer, Customizable interval counting, Night-friendly dim red palette, Lock Screen and widget integration, Apple Watch support, Separate tracking for twins, Pumping log with volume

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | Free | one-time |
| Lull Pro Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Sleep Tracker AI Coach free?

Sleep Tracker AI Coach is free to download, with in-app purchases available.

### Is Lull free?

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

### Which has better reviews, Sleep Tracker AI Coach or Lull?

Sleep Tracker AI Coach and Lull are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Sleep Tracker AI Coach or Lull have ads?

Neither Sleep Tracker AI Coach nor Lull shows ads.

### Which is updated more often, Sleep Tracker AI Coach or Lull?

Sleep Tracker AI Coach ships an update weekly, and Lull every 4 days. Most recently, Sleep Tracker AI Coach was updated on November 7, 2026 and Lull on November 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.*