# BiblioNB vs PTSS Lab MHM App

The clearest difference is update cadence: BiblioNB at every 3 months against PTSS Lab MHM App's every 18 months. On price, ads, in-app purchases and device support there is nothing between them.

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

BiblioNB ships an update every 3 months, PTSS Lab MHM App every 18 months. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BiblioNB | PTSS Lab MHM App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Size | 28 MB | 58 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Province of New Brunswick](https://appshunter.io/developer/1402075108) | [University of Regina](https://appshunter.io/developer/920451717) |

## What reviewers say

### BiblioNB

[App page](https://appshunter.io/ios/app/biblionb/id6695756439)

**In-app purchases:** none


### PTSS Lab MHM App

[App page](https://appshunter.io/ios/app/ptss-lab-mhm-app/id6745796043)

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

**In-app purchases:** none


## Frequently asked questions

### Is BiblioNB free?

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

### Is PTSS Lab MHM App free?

PTSS Lab MHM App is free to download, with no in-app purchases.

### Do BiblioNB or PTSS Lab MHM App have ads?

Neither BiblioNB nor PTSS Lab MHM App shows ads.

### Which is updated more often, BiblioNB or PTSS Lab MHM App?

BiblioNB ships an update every 3 months, and PTSS Lab MHM App every 18 months. Most recently, BiblioNB was updated on November 4, 2026 and PTSS Lab MHM App on November 5, 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.*