# NTC Micro Blue vs AlphaDisc™ CLD

The clearest difference is update cadence: AlphaDisc™ CLD at every 3 weeks against NTC Micro Blue's every 3 months. NTC Micro Blue's advantage is iOS requirement (9.3 vs 13.0). 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.

NTC Micro Blue ships an update every 3 months, AlphaDisc™ CLD every 3 weeks. The most recent releases landed on September 14, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | NTC Micro Blue | AlphaDisc™ CLD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 21 MB | 34 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nutricontrol, S.L.](https://appshunter.io/developer/842086893) | [Netafim](https://appshunter.io/developer/591791346) |

## What reviewers say

### NTC Micro Blue

[App page](https://appshunter.io/ios/app/ntc-micro-blue/id1160213976)

**Features:** macOS Compatibility

**In-app purchases:** none


### AlphaDisc™ CLD

[App page](https://appshunter.io/ios/app/alphadisc-cld/id1505187724)

**In-app purchases:** none


## Frequently asked questions

### Is NTC Micro Blue free?

NTC Micro Blue is free to download, with no in-app purchases.

### Is AlphaDisc™ CLD free?

AlphaDisc™ CLD is free to download, with no in-app purchases.

### Do NTC Micro Blue or AlphaDisc™ CLD have ads?

Neither NTC Micro Blue nor AlphaDisc™ CLD shows ads.

### Which is updated more often, NTC Micro Blue or AlphaDisc™ CLD?

NTC Micro Blue ships an update every 3 months, and AlphaDisc™ CLD every 3 weeks. Most recently, NTC Micro Blue was updated on September 14, 2026 and AlphaDisc™ CLD on September 23, 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.*