# uSpectrum MK350D vs Trulii

The clearest difference is review sentiment: Trulii at 100% against uSpectrum MK350D's 0%. Trulii also leads on rating (5.0 vs 3.0) and update cadence (every 9 days vs every 2 months). uSpectrum MK350D's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Trulii sells 2 in-app purchases, starting at $7.99 per month. uSpectrum MK350D asks for nothing beyond the download.

Trulii holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 0% of uSpectrum MK350D's written reviews are positive against 100% of Trulii's.

uSpectrum MK350D ships an update every 2 months, Trulii every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | uSpectrum MK350D | Trulii |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/uspectrum-mk350d/id876342072/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/trulii/id6755763264/reviews)** |
| Number of ratings | 2 | **6** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 55 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [Trulii LLC](https://appshunter.io/developer/1856186246) |

## What reviewers say

### uSpectrum MK350D

[App page](https://appshunter.io/ios/app/uspectrum-mk350d/id876342072)

This portable spectrometer offers easy-to-use lighting analysis for production environments. It features BLE remote control and SD card data storage for efficient workflow and advanced light analytics.

**Highlights:** BLE remote control, SD card data storage, Fast lighting readings, Advanced light analytics, Efficient workflow features

**Features:** macOS Compatibility

**In-app purchases:** none


### Trulii

[App page](https://appshunter.io/ios/app/trulii/id6755763264)

Effortlessly recall details about people you meet, from names and workplaces to personal anecdotes. Utilize voice or AI search to quickly find contacts and their information as your network expands. Never forget important personal details again.

**Highlights:** Remember personal details, Voice search, Smart AI search, Network growth management, Effortless contact recall

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trulii Monthly | $7.99 | per month |
| Trulii Annual | $84.99 | per year |


## Frequently asked questions

### Is uSpectrum MK350D free?

uSpectrum MK350D is free to download, with no in-app purchases.

### Is Trulii free?

Trulii is free to download, with in-app purchases available.

### Which has better reviews, uSpectrum MK350D or Trulii?

Trulii is rated higher. uSpectrum MK350D averages 3.0 out of 5 from 2 ratings, while Trulii averages 5.0 from 6 ratings.

### Do uSpectrum MK350D or Trulii have ads?

Neither uSpectrum MK350D nor Trulii shows ads.

### Which is updated more often, uSpectrum MK350D or Trulii?

uSpectrum MK350D ships an update every 2 months, and Trulii every 9 days. Most recently, uSpectrum MK350D was updated on October 24, 2026 and Trulii on October 24, 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.*