# HARMONY vs Baby Sleep Tracker by Lulla

The clearest difference is in-app purchases: HARMONY at none against Baby Sleep Tracker by Lulla's 10. HARMONY also leads on iOS requirement (12.0 vs 17.0). Baby Sleep Tracker by Lulla's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Baby Sleep Tracker by Lulla sells 9 in-app purchases, starting at $9.99 per month. HARMONY asks for nothing beyond the download.

HARMONY ships an update every 2 weeks, Baby Sleep Tracker by Lulla every 5 days. The most recent releases landed on November 8, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | HARMONY | Baby Sleep Tracker by Lulla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (45 ratings)](https://appshunter.io/ios/app/baby-sleep-tracker-by-lulla/id6764310567/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 88 MB | 44 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Qingdao Richmat Intelligence Technology Inc.](https://appshunter.io/developer/1814751082) | [BUBBLE DOTS, S.L.](https://appshunter.io/developer/1895727157) |

## What reviewers say

### HARMONY

[App page](https://appshunter.io/ios/app/harmony/id6478255796)

**Features:** macOS Compatibility

**In-app purchases:** none


### Baby Sleep Tracker by Lulla

[App page](https://appshunter.io/ios/app/baby-sleep-tracker-by-lulla/id6764310567)

This app creates personalized sleep schedules for infants based on their age and logged sleep patterns. It offers predictive insights for naps and bedtime, gentle reminders, and integrated white noise. The interface is designed for ease of use by sleep-deprived parents.

**Highlights:** Personalized sleep plan generation, Predictive nap and bedtime recommendations, Dynamic wake window adjustment, Sleep pattern learning, Nap and night sleep tracking, Gentle reminders, Built-in white noise

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lulla Premium Monthly | $9.99 | per month |
| Lulla 3 Months Subscription | $12.99 | per 3 months |
| Lulla Premium Yearly promo | $14.99 | per year |
| Lulla Premium Yearly promo | $14.99 | per year |
| Lulla Premium Annual | $22.99 | per year |
| Lulla Premium Annual | $22.99 | per year |
| Lulla Premium Annual | $22.99 | per year |
| Lulla Premium Annual | $34.99 | per year |
| Lulla Premium Annual | $34.99 | per year |


## Frequently asked questions

### Is HARMONY free?

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

### Is Baby Sleep Tracker by Lulla free?

Baby Sleep Tracker by Lulla is free to download, with in-app purchases available.

### Do HARMONY or Baby Sleep Tracker by Lulla have ads?

Neither HARMONY nor Baby Sleep Tracker by Lulla shows ads.

### Which is updated more often, HARMONY or Baby Sleep Tracker by Lulla?

HARMONY ships an update every 2 weeks, and Baby Sleep Tracker by Lulla every 5 days. Most recently, HARMONY was updated on November 8, 2026 and Baby Sleep Tracker by Lulla on November 11, 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.*