# nRF Toolbox vs TrimCal 4000

The clearest difference is update cadence: TrimCal 4000 at every 10 days against nRF Toolbox's every 5 weeks. TrimCal 4000 also leads on iOS requirement (13.5 vs 18.0). 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.

nRF Toolbox ships an update every 5 weeks, TrimCal 4000 every 10 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | nRF Toolbox | TrimCal 4000 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (8 ratings)](https://appshunter.io/ios/app/nrf-toolbox/id820906058/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 17 MB | 38 MB |
| Requires iOS | 18.0 | **13.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nordic Semiconductor ASA](https://appshunter.io/developer/497679114) | [Nci Technology Inc.](https://appshunter.io/developer/868272704) |

## What reviewers say

### nRF Toolbox

[App page](https://appshunter.io/ios/app/nrf-toolbox/id820906058)

This utility app connects to various Bluetooth Low Energy accessories. It demonstrates multiple BLE profiles, including health and fitness sensors, allowing users to monitor data from devices like heart rate monitors and glucose monitors.

**Highlights:** Bluetooth Low Energy connectivity, Demonstrates BLE profiles, Heart Rate Monitor support, Glucose Monitor support, Cycling Speed and Cadence, Running Speed and Cadence

**In-app purchases:** none


### TrimCal 4000

[App page](https://appshunter.io/ios/app/trimcal-4000/id6755869998)

**In-app purchases:** none


## Frequently asked questions

### Is nRF Toolbox free?

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

### Is TrimCal 4000 free?

TrimCal 4000 is free to download, with no in-app purchases.

### Do nRF Toolbox or TrimCal 4000 have ads?

Neither nRF Toolbox nor TrimCal 4000 shows ads.

### Which is updated more often, nRF Toolbox or TrimCal 4000?

nRF Toolbox ships an update every 5 weeks, and TrimCal 4000 every 10 days. Most recently, nRF Toolbox was updated on October 24, 2026 and TrimCal 4000 on October 10, 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.*