# STEM Connect Pro vs NoteClock

The clearest difference is update cadence: NoteClock at every 3 months against STEM Connect Pro's every 14 months. STEM Connect Pro's advantage is iOS requirement (13.0 vs 26.0). 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.

STEM Connect Pro ships an update every 14 months, NoteClock every 3 months. The most recent releases landed on September 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | STEM Connect Pro | NoteClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Size | 9 MB | 4 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [STEM s.r.l.](https://appshunter.io/developer/1577070000) | [Berkay Sancar](https://appshunter.io/developer/1673046007) |

## What reviewers say

### STEM Connect Pro

[App page](https://appshunter.io/ios/app/stem-connect-pro/id1577069998)

**Features:** macOS Compatibility

**In-app purchases:** none


### NoteClock

[App page](https://appshunter.io/ios/app/noteclock-short-note-reminder/id1673046005)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STEM Connect Pro free?

STEM Connect Pro is free to download, with no in-app purchases.

### Is NoteClock free?

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

### Do STEM Connect Pro or NoteClock have ads?

Neither STEM Connect Pro nor NoteClock shows ads.

### Which is updated more often, STEM Connect Pro or NoteClock?

STEM Connect Pro ships an update every 14 months, and NoteClock every 3 months. Most recently, STEM Connect Pro was updated on September 17, 2026 and NoteClock on September 19, 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.*