# Hydralert vs Longevity Checklist

The clearest difference is in-app purchases: Longevity Checklist at none against Hydralert's 3. Hydralert's advantage is update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Hydralert sells 3 in-app purchases, starting at $2.99 per month. Longevity Checklist asks for nothing beyond the download.

Hydralert ships an update every 2 days, Longevity Checklist monthly. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Hydralert | Longevity Checklist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydralert/id6468425578/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | Freemium | — |
| Size | 69 MB | 46 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Colby Mehmen](https://appshunter.io/developer/1615430352) | [Michael Taciuk](https://appshunter.io/developer/1680026357) |

## What reviewers say

### Hydralert

[App page](https://appshunter.io/ios/app/hydralert/id6468425578)

Easily track your fluid intake, including water, caffeine, and alcohol, to maintain optimal hydration. Set personalized goals and gain insights into your hydration patterns with user-friendly analytics. Achieve your daily hydration targets with this intuitive health companion.

**Highlights:** Hydration tracking, Caffeine and alcohol monitoring, Customizable hydration goals, Insightful hydration analytics, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annually | $9.99 | per year |
| Lifetime Access | $14.99 | one-time |


### Longevity Checklist

[App page](https://appshunter.io/ios/app/longevity-checklist/id6737241919)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydralert free?

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

### Is Longevity Checklist free?

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

### Do Hydralert or Longevity Checklist have ads?

Neither Hydralert nor Longevity Checklist shows ads.

### Which is updated more often, Hydralert or Longevity Checklist?

Hydralert ships an update every 2 days, and Longevity Checklist monthly. Most recently, Hydralert was updated on November 3, 2026 and Longevity Checklist on October 27, 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.*