# PulseAid vs Rain Synth

The clearest difference is update cadence: Rain Synth at every 4 days against PulseAid's every 4 months. Rain Synth also leads on iOS requirement (15.0 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.

PulseAid ships an update every 4 months, Rain Synth every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PulseAid | Rain Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pulseaid/id6760772109/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 3 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Santhosh babu S](https://appshunter.io/developer/1879054401) | [Kaine Shutler](https://appshunter.io/developer/1889281429) |

## What reviewers say

### PulseAid

[App page](https://appshunter.io/ios/app/pulseaid/id6760772109)

Estimate your heart rate, breathing, and stress levels using your iPhone's camera. Offers daily and night scans, facial health analysis, and AI-powered insights. Includes wellness tools and Apple Watch integration for a comprehensive wellness overview.

**Highlights:** Camera-based heart rate estimation, Night scan with infrared camera, Facial health analysis, AI-powered insights and reports, 7-day trends and calendar view, Guided breathing exercises, Apple Watch integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Rain Synth

[App page](https://appshunter.io/ios/app/rain-synth-sleep-sounds/id6761389583)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PulseAid free?

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

### Is Rain Synth free?

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

### Do PulseAid or Rain Synth have ads?

Neither PulseAid nor Rain Synth shows ads.

### Which is updated more often, PulseAid or Rain Synth?

PulseAid ships an update every 4 months, and Rain Synth every 4 days. Most recently, PulseAid was updated on October 28, 2026 and Rain Synth on October 25, 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.*