nRF Toolbox vs TrimCal 4000
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nRF Toolbox
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.
- Bluetooth Low Energy connectivity
- Demonstrates BLE profiles
- Heart Rate Monitor support
- Glucose Monitor support
- Cycling Speed and Cadence
- Running Speed and Cadence
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nRF Toolbox works with a wide range of Bluetooth Low Energy accessories. It contains applications demonstrating BLE profiles: Cycling Speed and Cadence, Running Speed and Cadence, Heart Rate Monitor, Blood Pressure Monitor, Health Thermometer, Glucose Monitor, Continuous Glucose Monitor, Monitoring & Diagnostic and more. The source code of this application is available on GitHub: https://github.com/nordicsemi/iOS-nRF-Toolbox
TrimCal 4000
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This is an app specifically designed for connecting to a particular Trimcal body fat scale.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | nRF Toolbox | TrimCal 4000 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (8 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 5 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.5 — better |
| Further details — not scored | ||
| Size | 17 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Nordic Semiconductor ASA | Nci Technology Inc. |
In-app purchases
nRF Toolbox
No in-app purchases
TrimCal 4000
No in-app purchases
Questions
Is nRF Toolbox free?
Is TrimCal 4000 free?
Do nRF Toolbox or TrimCal 4000 have ads?
Which is updated more often, nRF Toolbox or TrimCal 4000?
Other comparisons
