# Precision AIM vs Sparrow Link Participant

The clearest difference is rating: Sparrow Link Participant at 5.0 against Precision AIM's 3.7. Sparrow Link Participant also leads on iOS requirement (15.6 vs 18.2). Precision AIM's advantage is device support and ratings volume (3 vs 1). On price, 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.

Sparrow Link Participant holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | Precision AIM | Sparrow Link Participant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/precision-aim/id1538468592/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sparrow-link-participant/id6756681491/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 64 months | — |
| Monetization | Free | Free |
| Size | 1 MB | 27 MB |
| Requires iOS | 18.2 | **15.6** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [SDC Insights, LLC](https://appshunter.io/developer/1456386191) | [Spark Biomedical Inc](https://appshunter.io/developer/1550645794) |

## What reviewers say

### Precision AIM

[App page](https://appshunter.io/ios/app/precision-aim/id1538468592)

This app delivers randomized motivational messages throughout the day to encourage increased physical activity. Participants log in with a research-provided username and must enable notifications and location services to receive messages. The app's primary function is to facilitate a research study on message-based motivation.

**Highlights:** Randomized motivational messages, Physical activity encouragement, Research study participation, Notification and location services required, Simple home screen interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Sparrow Link Participant

[App page](https://appshunter.io/ios/app/sparrow-link-participant/id6756681491)

This application securely tracks usage of a medical device for clinical research. It collects minimal, deidentified data from consented participants to assess device interaction, ensuring privacy and compliance. The tool is designed for ease of use within a research platform.

**Highlights:** Tracks Sparrow Link Pulse Generator usage, Deidentified, HIPAA-compliant data collection, Minimal data required from participants, Solely for research purposes, Designed for privacy and compliance, Ease of use within research platform

**In-app purchases:** none


## Frequently asked questions

### Is Precision AIM free?

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

### Is Sparrow Link Participant free?

Sparrow Link Participant is free to download, with no in-app purchases.

### Which has better reviews, Precision AIM or Sparrow Link Participant?

Sparrow Link Participant is rated higher. Precision AIM averages 3.7 out of 5 from 3 ratings, while Sparrow Link Participant averages 5.0 from 1 ratings.

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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.*