# NTN Guardian vs iMaintain CMMS

NTN Guardian and iMaintain CMMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

NTN Guardian ships an update every 2 weeks, iMaintain CMMS every 3 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NTN Guardian | iMaintain CMMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 25 MB | 30 MB |
| Requires iOS | 16 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NTN Bearing Corporation of America](https://appshunter.io/developer/1739101553) | [iMaintain Solutions Limited](https://appshunter.io/developer/1826398527) |

## What reviewers say

### NTN Guardian

[App page](https://appshunter.io/ios/app/ntn-guardian/id6480462030)

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

**In-app purchases:** none


### iMaintain CMMS

[App page](https://appshunter.io/ios/app/imaintain-cmms/id6748581405)

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

**In-app purchases:** none


## Frequently asked questions

### Is NTN Guardian free?

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

### Is iMaintain CMMS free?

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

### Do NTN Guardian or iMaintain CMMS have ads?

Neither NTN Guardian nor iMaintain CMMS shows ads.

### Which is updated more often, NTN Guardian or iMaintain CMMS?

NTN Guardian ships an update every 2 weeks, and iMaintain CMMS every 3 weeks. Most recently, NTN Guardian was updated on October 12, 2026 and iMaintain CMMS on October 24, 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.*