# Hailie vs HAND in Hand Mobile Study

The clearest difference is rating: HAND in Hand Mobile Study at 4.0 against Hailie's 3.4. HAND in Hand Mobile Study also leads on review sentiment (50% vs 25%) and iOS requirement (11.4 vs 13.0). Hailie's advantage is update cadence (every 2 months vs every 3 months) and ratings volume (13 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

HAND in Hand Mobile Study holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 13 and 3 respectively. Written reviews point the same way: 25% of Hailie's written reviews are positive against 50% of HAND in Hand Mobile Study's.

Hailie ships an update every 2 months, HAND in Hand Mobile Study every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Hailie | HAND in Hand Mobile Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (13 ratings)](https://appshunter.io/ios/app/hailie/id421901698/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/hand-in-hand-mobile-study/id1005617953/reviews)** |
| Number of ratings | **13** | 3 |
| Positive reviews | 25.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 53 MB | 55 MB |
| Requires iOS | 13.0 | **11.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Adherium (NZ) Limited](https://appshunter.io/developer/421901702) | [Digital Artefacts L.L.C.](https://appshunter.io/developer/546444556) |

## What reviewers say

### Hailie

[App page](https://appshunter.io/ios/app/hailie/id421901698)

This app helps manage asthma and COPD by tracking inhaler usage and providing reminders. It offers insights into medication patterns to improve adherence and reduce symptoms, integrating with Apple Health for comprehensive health data sharing.

**Highlights:** Real-time inhaler use monitoring, Medication usage pattern insights, Audio-visual reminders, Bluetooth enabled Smartinhalers, Apple Health integration, Clinical evidence of improved adherence

**Features:** macOS Compatibility

**In-app purchases:** none


### HAND in Hand Mobile Study

[App page](https://appshunter.io/ios/app/hand-in-hand-mobile-study/id1005617953)

Participate in a medical research study on HIV Associated Neurocognitive Disorders (HAND). Track cognitive function, complete surveys, and share health data to advance research and understand potential impacts on neurocognitive health.

**Highlights:** Medical research participation, HIV neurocognitive disorder study, Cognitive function tracking, Health data integration, Weekly assessments, Demographic and lifestyle surveys

**In-app purchases:** none


## Frequently asked questions

### Is Hailie free?

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

### Is HAND in Hand Mobile Study free?

HAND in Hand Mobile Study is free to download, with no in-app purchases.

### Which has better reviews, Hailie or HAND in Hand Mobile Study?

HAND in Hand Mobile Study is rated higher. Hailie averages 3.4 out of 5 from 13 ratings, while HAND in Hand Mobile Study averages 4.0 from 3 ratings.

### Do Hailie or HAND in Hand Mobile Study have ads?

Neither Hailie nor HAND in Hand Mobile Study shows ads.

### Which is updated more often, Hailie or HAND in Hand Mobile Study?

Hailie ships an update every 2 months, and HAND in Hand Mobile Study every 3 months. Most recently, Hailie was updated on November 1, 2026 and HAND in Hand Mobile Study on November 1, 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.*