# KRAIN vs Units2Units

The clearest difference is in-app purchases: KRAIN at none against Units2Units's 1. KRAIN also leads on iOS requirement (14.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Units2Units sells 1 one-off in-app purchase. KRAIN asks for nothing beyond the download.

KRAIN ships an update every 2 weeks, Units2Units every 6 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KRAIN | Units2Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (7 ratings)](https://appshunter.io/ios/app/krain/id1542242891/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Free | — |
| Size | 43 MB | 44 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [K-Rain Manufacturing Corporation](https://appshunter.io/developer/1098744177) | [GnitoApp.com](https://appshunter.io/developer/1804710946) |

## What reviewers say

### KRAIN

[App page](https://appshunter.io/ios/app/krain/id1542242891)

Manage your irrigation system remotely with this app. It allows you to set up and control watering schedules, adjust runtimes, and monitor multiple controllers from your mobile device.

**Highlights:** Manage multiple controllers, Create watering schedules, Set Cycle & Soak, Control lighting schedules, Advanced Intelligence Mode, Adjust runtimes remotely

**Features:** Vision Pro support

**In-app purchases:** none


### Units2Units

[App page](https://appshunter.io/ios/app/units2units/id6778024693)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is KRAIN free?

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

### Is Units2Units free?

Units2Units is free to download, with in-app purchases available.

### Do KRAIN or Units2Units have ads?

Neither KRAIN nor Units2Units shows ads.

### Which is updated more often, KRAIN or Units2Units?

KRAIN ships an update every 2 weeks, and Units2Units every 6 days. Most recently, KRAIN was updated on October 6, 2026 and Units2Units on October 4, 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.*