# Symtally vs Undercurrent

The clearest difference is in-app purchases: Symtally at none against Undercurrent's 1. Symtally also leads on device support (3 vs 1). Undercurrent's advantage is ads (none vs shown). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. Undercurrent sells 1 one-off in-app purchase. Symtally asks for nothing beyond the download.

Symtally ships an update every 5 weeks, Undercurrent monthly. The most recent releases landed on September 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Symtally | Undercurrent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/symtally-symptom-tracker/id6477356076/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 47 MB | 76 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Wippl Ltd](https://appshunter.io/developer/1729089831) | [Lloyd Rowat](https://appshunter.io/developer/1166734628) |

## What reviewers say

### Symtally

[App page](https://appshunter.io/ios/app/symtally-symptom-tracker/id6477356076)

This app provides a private and simple way to log symptoms, pain, mood, and health patterns. It's designed for individuals managing chronic illness, mental health, or menstrual cycles, with all data stored securely on your device.

**Highlights:** Track symptoms, pain, and mood, Log period and cycle patterns, Built for chronic illness and mental health, Works fully offline, No accounts or data sharing, Data stays on device, View patterns with charts

**In-app purchases:** none


### Undercurrent

[App page](https://appshunter.io/ios/app/undercurrent-symptom-tracker/id6759209174)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undercurrent Health: Pro | $19.99 | one-time |


## Frequently asked questions

### Is Symtally free?

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

### Is Undercurrent free?

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

### Do Symtally or Undercurrent have ads?

Symtally shows ads; Undercurrent does not.

### Which is updated more often, Symtally or Undercurrent?

Symtally ships an update every 5 weeks, and Undercurrent monthly. Most recently, Symtally was updated on September 22, 2026 and Undercurrent on October 6, 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.*