# SleepLink vs Cactus

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

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

SleepLink ships an update weekly, Cactus every 2 weeks. Both last shipped on November 9, 2026.

## The numbers

| Metric | SleepLink | Cactus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cactus-water-tracker-reminder/id6760417601/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Ad-supported |
| Size | 39 MB | 81 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Kovacs Software Solutions](https://appshunter.io/developer/1366258691) | [Alexandre Jouanne](https://appshunter.io/developer/1880834583) |

## What reviewers say

### SleepLink

[App page](https://appshunter.io/ios/app/sleeplink/id6759491794)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cactus

[App page](https://appshunter.io/ios/app/cactus-water-tracker-reminder/id6760417601)

This app simplifies hydration tracking with quick logging, personalized goals, and smart reminders. Watch a virtual cactus flourish as you meet your daily water intake targets, making healthy habits rewarding and stress-free.

**Highlights:** Quick drink logging, Personalized daily hydration goals, Smart, schedule-aware reminders, Visual progress with a growing cactus, Detailed history and stats, Tracking for 9 drink types

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Cactus Ads | $6.99 | one-time |


## Frequently asked questions

### Is SleepLink free?

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

### Is Cactus free?

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

### Do SleepLink or Cactus have ads?

Cactus shows ads; SleepLink does not.

### Which is updated more often, SleepLink or Cactus?

SleepLink ships an update weekly, and Cactus every 2 weeks. Most recently, SleepLink was updated on November 9, 2026 and Cactus on November 9, 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.*