uSpectrum MK350S vs Dart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
uSpectrum MK350S
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.
- WiFi remote control
- SD card data storage
- Basic and advanced light analytics
- BIN ranking
- Log compare
- CRI (R1-R15)
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The MK350S is a lightweight, portable, easy-to-operate spectrometer with WiFi remote control operations and SD card data storage. This product has basic features for fast, easy lighting readings, as well as advanced light analytics, and efficient work-flow features for lighting production environments. Beyond MK350N, this App include BIN ranking, log compare, data checker and CRI (R1-R15). User can also customize basic list with different measurement terms.
Dart
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Dart is a speed reading app that uses RSVP (Rapid Serial Visual Presentation) to help you read faster while maintaining comprehension. Features: • Practice Mode: Paste any text and train at your own pace • Challenge Mode: Compete with viral speed reading challenges • Customizable WPM: Adjust reading speed from 100 to 1000+ words per minute • ORP Alignment: Optimal Recognition Point keeps your eyes steady • Progress Tracking: Monitor your reading speed improvements • Local Storage: All your texts and sessions save locally on your device Perfect for students, professionals, and anyone looking to practice reading speed. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://dartreader.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: uSpectrum MK350S at none against Dart's 2. uSpectrum MK350S also leads on iOS requirement (6.0 vs 26.2). Dart's advantage is update cadence (daily vs every 2 months). On price, ads 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. Dart sells 2 in-app purchases, starting at $3.99 per 7 days. uSpectrum MK350S asks for nothing beyond the download.
uSpectrum MK350S ships an update every 2 months, Dart daily. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.
| Parameter | uSpectrum MK350S | Dart |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 54 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | United Power Research Technology Corporation | Two Mustard Bytes |
In-app purchases
uSpectrum MK350S
No in-app purchases
Dart
- Dart - Weekly Subscription$3.997 Days
- Dart - Yearly Subscription7 Days trial$39.991 Year
