# Undercurrent vs Symptile

The clearest difference is in-app purchases: Symptile at none against Undercurrent's 1. Symptile also leads on update cadence (daily vs weekly). Undercurrent's advantage is device support (3 vs 1) and iOS requirement (16.4 vs 26.0). On price and ads there is nothing between them.

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

Undercurrent ships an update weekly, Symptile daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | Undercurrent | Symptile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 73 MB | 4 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Lloyd Rowat](https://appshunter.io/developer/1166734628) | [BRUNO DURAND](https://appshunter.io/developer/1614095585) |

## What reviewers say

### Undercurrent

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

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

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


### Symptile

[App page](https://appshunter.io/ios/app/symptile-symptom-tracker/id6783853981)

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

**In-app purchases:** none


## Frequently asked questions

### Is Undercurrent free?

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

### Is Symptile free?

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

### Do Undercurrent or Symptile have ads?

Neither Undercurrent nor Symptile shows ads.

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

Undercurrent ships an update weekly, and Symptile daily. Most recently, Undercurrent was updated on October 24, 2026 and Symptile on October 24, 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.*