# uSpectrum MK350S vs Doc Reader

The clearest difference is update cadence: Doc Reader at weekly against uSpectrum MK350S's every 2 months. uSpectrum MK350S's advantage is iOS requirement (6.0 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.

uSpectrum MK350S ships an update every 2 months, Doc Reader weekly. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | uSpectrum MK350S | Doc Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/uspectrum-mk350s/id718838051/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 54 MB | 651 MB |
| Requires iOS | **6.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [ETHAN SCOTT TROKIE](https://appshunter.io/developer/1854901410) |

## What reviewers say

### uSpectrum MK350S

[App page](https://appshunter.io/ios/app/uspectrum-mk350s/id718838051)

This app provides advanced light analysis and efficient workflow features for lighting production. It offers remote control operations, data storage, and detailed light readings including BIN ranking and CRI.

**Highlights:** WiFi remote control, SD card data storage, Basic and advanced light analytics, BIN ranking, Log compare, CRI (R1-R15)

**Features:** macOS Compatibility

**In-app purchases:** none


### Doc Reader

[App page](https://appshunter.io/ios/app/doc-reader-text-to-speech/id6759199219)

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrum MK350S free?

uSpectrum MK350S is free to download, with no in-app purchases.

### Is Doc Reader free?

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

### Do uSpectrum MK350S or Doc Reader have ads?

Neither uSpectrum MK350S nor Doc Reader shows ads.

### Which is updated more often, uSpectrum MK350S or Doc Reader?

uSpectrum MK350S ships an update every 2 months, and Doc Reader weekly. Most recently, uSpectrum MK350S was updated on October 4, 2026 and Doc Reader on October 5, 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.*