# Sym Breathing vs Acid Reflux Diary

The clearest difference is update cadence: Acid Reflux Diary at every 6 days against Sym Breathing's every 3 weeks. Acid Reflux Diary also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sym Breathing sells 3 in-app purchases, starting at $0.99 per month and Acid Reflux Diary sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Sym Breathing ships an update every 3 weeks, Acid Reflux Diary every 6 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sym Breathing | Acid Reflux Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (37 ratings)](https://appshunter.io/ios/app/sym-breathing-hrv-coherence/id6575391114/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 35 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Lubbers](https://appshunter.io/developer/1759415354) | [Ryosuke Igarashi](https://appshunter.io/developer/6781130241) |

## What reviewers say

### Sym Breathing

[App page](https://appshunter.io/ios/app/sym-breathing-hrv-coherence/id6575391114)

This app offers guided breathwork to help you achieve a calm and balanced state. It uses a steady 5.5-second inhale/exhale rhythm to reduce stress, improve focus, and enhance well-being. Features include customizable cues, daily affirmations, and a night mode for sleep.

**Highlights:** Guided 5.5-second inhale/exhale rhythm, Customizable audio, visual, and haptic cues, Daily affirmations for positive mindset, Night mode for reduced blue light, Seamless audio integration with other apps, Effortless session initiation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annually | $4.99 | per year |
| Lifetime | $24.99 | one-time |


### Acid Reflux Diary

[App page](https://appshunter.io/ios/app/acid-reflux-diary-refluxlog/id6781159330)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RefluxLog Premium Monthly | $2.99 | per month |
| RefluxLog Premium Yearly | $19.99 | per year |
| RefluxLog Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Sym Breathing free?

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

### Is Acid Reflux Diary free?

Acid Reflux Diary is free to download, with in-app purchases available.

### Do Sym Breathing or Acid Reflux Diary have ads?

Neither Sym Breathing nor Acid Reflux Diary shows ads.

### Which is updated more often, Sym Breathing or Acid Reflux Diary?

Sym Breathing ships an update every 3 weeks, and Acid Reflux Diary every 6 days. Most recently, Sym Breathing was updated on November 8, 2026 and Acid Reflux Diary on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*