# Monarch2Go vs DIAMOND

The clearest difference is review sentiment: DIAMOND at 100% against Monarch2Go's 27%. DIAMOND also leads on rating (4.7 vs 3.7) and ratings volume (94 vs 16). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DIAMOND holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: DIAMOND has 94 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 27% of Monarch2Go's written reviews are positive against 100% of DIAMOND's.

Monarch2Go ships an update every 2 months, DIAMOND every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Monarch2Go | DIAMOND |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (16 ratings)](https://appshunter.io/ios/app/monarch2go/id1372591101/reviews) | **[4.7 (94 ratings)](https://appshunter.io/ios/app/diamond-linq/id1448273058/reviews)** |
| Number of ratings | 16 | **94** |
| Positive reviews | 27.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 50 MB | 23 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Monarch Library System](https://appshunter.io/developer/1565151506) | [Diamond H2O](https://appshunter.io/developer/1448273057) |

## What reviewers say

### Monarch2Go

[App page](https://appshunter.io/ios/app/monarch2go/id1372591101)

Access your local library's collection from anywhere. Borrow eBooks, audiobooks, and magazines, manage your account, and discover online learning resources. Your library card is conveniently stored within the app.

**Highlights:** Search library catalog, Manage library account, Place holds and renew materials, Access eBooks and audiobooks, Access magazines and online classes, Store library card

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

**In-app purchases:** none


### DIAMOND

[App page](https://appshunter.io/ios/app/diamond-linq/id1448273058)

This app allows users to easily set up and monitor their water treatment equipment. Users can control valve settings, view water usage, and initiate system cycles directly from their Bluetooth-enabled device.

**Highlights:** Control and monitor valve settings, View water usage information, Start regeneration/backwash cycles, Set dealer information, Basic troubleshooting, Connect to multiple valves, Update firmware

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Monarch2Go free?

Monarch2Go is free to download, with no in-app purchases.

### Is DIAMOND free?

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

### Which has better reviews, Monarch2Go or DIAMOND?

DIAMOND is rated higher. Monarch2Go averages 3.7 out of 5 from 16 ratings, while DIAMOND averages 4.7 from 94 ratings.

### Do Monarch2Go or DIAMOND have ads?

Neither Monarch2Go nor DIAMOND shows ads.

### Which is updated more often, Monarch2Go or DIAMOND?

Monarch2Go ships an update every 2 months, and DIAMOND every 3 months. Most recently, Monarch2Go was updated on November 2, 2026 and DIAMOND on November 2, 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.*