# Histamine Tracker vs Tether

The clearest difference is ads: Tether at none against Histamine Tracker's shown. Histamine Tracker's advantage is update cadence (every 4 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Histamine Tracker sells 4 in-app purchases, starting at $9.99 per month and Tether sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Histamine Tracker ships an update every 4 days, Tether every 2 months. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Histamine Tracker | Tether |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (26 ratings)](https://appshunter.io/ios/app/histamine-tracker-food-diary/id6758752231/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 61 MB | 39 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Lion, LLC](https://appshunter.io/developer/1874803480) | [Zachary Lyons](https://appshunter.io/developer/1802738531) |

## What reviewers say

### Histamine Tracker

[App page](https://appshunter.io/ios/app/histamine-tracker-food-diary/id6758752231)

This app helps you identify patterns between your food intake and symptoms like fatigue or brain fog. It allows you to scan food for histamine levels, log meals and symptoms easily, and provides personalized insights to help you manage intolerance.

**Highlights:** Scan food for histamine levels, Log meals, symptoms, and activities, Personalized daily findings and pattern surfacing, Comprehensive food database with histamine ratings, Low-histamine meal ideas and articles, Export journal and reports for health practitioners

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $49.99 | per year |
| Yearly | $59.99 | per year |
| Lifetime Access | $59.99 | one-time |


### Tether

[App page](https://appshunter.io/ios/app/tether-sensitivity-tracker/id6759925709)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tether Premium | $4.99 | per month |
| Tether Premium | $39.99 | per year |
| Tether Premium | $79.99 | one-time |


## Frequently asked questions

### Is Histamine Tracker free?

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

### Is Tether free?

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

### Do Histamine Tracker or Tether have ads?

Histamine Tracker shows ads; Tether does not.

### Which is updated more often, Histamine Tracker or Tether?

Histamine Tracker ships an update every 4 days, and Tether every 2 months. Most recently, Histamine Tracker was updated on September 21, 2026 and Tether on September 8, 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.*