Comparison

Voltcraft DOK Series vs Thermal Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Voltcraft DOK Series

Features
Read full description

APP for connecting with the Voltcraft DOK Series, easy to use & get connected.

About

Thermal Viewer

Analyze radiometric thermal images directly on your iPhone, iPad, or Mac. This app supports various thermal file formats and offers advanced analysis tools like temperature readings, measurement tools, and color palettes. Export data and images for further review, all while keeping your images private and offline.

Highlights
  • Radiometric thermal image analysis
  • Temperature measurement (spot, box, ellipse, line)
  • Multiple color palettes
  • Live re-analysis with adjustable parameters
  • Visible-light blend and MSX-style overlay
  • Export temperature matrix to CSV
  • Batch export of images and settings
Features
Read full description

Thermal Viewer opens and analyzes radiometric thermal images right on your iPhone, iPad, and Mac. No Windows PC, no camera accessory, and no account. Searching for "FLIR Tools for Mac" or a SmartView alternative? This is the native app you have been missing. FLIR discontinued its Mac software and Fluke's mobile viewer is no longer maintained. Thermal Viewer fills that gap, fully offline. WORKS WITH • FLIR radiometric JPEG: E-series, T-series, Cx, FLIR ONE, CAT phones • Fluke IS2 files • Radiometric TIFF (ResearchIR, Vue / Duo Pro R) • InfiRay / P2 Pro thermal JPEG • DJI thermal JPEG (image and capture parameters) • Plain thermal JPEGs EVERY PIXEL IS A TEMPERATURE Tap anywhere to read the exact temperature. Add spot, box, ellipse and line measurements with min / avg / max, and Delta-T between any two of them. PROFESSIONAL ANALYSIS • 8 color palettes plus your camera's own palette • Level/span with histogram, isotherms, automatic hot and cold markers • Live re-analysis: change emissivity, reflected temperature and distance, and temperatures recompute instantly • Visible-light blend, picture-in-picture, and MSX-style edge overlay • °C / °F / K • Full camera, lens, GPS and parameter inspector EXPORT & BATCH • Export the full temperature matrix to CSV • Export rendered images (PNG) and reproducible analysis settings (JSON) • Hotspot Triage: scan a whole folder and flag every image above your threshold • Batch export PRIVATE BY DESIGN Everything runs on your device. Your images never leave your phone: no cloud, no account, no tracking. Thermal Viewer is an independent app and is not affiliated with, endorsed by, or sponsored by FLIR, Teledyne, Fluke, DJI, or InfiRay. Brand names are used only to indicate supported file formats. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms

Screenshots

Voltcraft DOK Series3 screens
Thermal Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: Voltcraft DOK Series at none against Thermal Viewer's 3. Voltcraft DOK Series also leads on iOS requirement (13.0 vs 15.0). Thermal Viewer's advantage is update cadence (every 5 days vs monthly) and device support (4 vs 2). On price and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Thermal Viewer sells 3 in-app purchases, starting at $4.99 per 7 days. Voltcraft DOK Series asks for nothing beyond the download.

UpkeepUpdate frequency

Voltcraft DOK Series ships an update monthly, Thermal Viewer every 5 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Voltcraft DOK Series versus Thermal Viewer: the parameters behind the verdict, then further details
ParameterVoltcraft DOK SeriesThermal Viewer
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size4 MB35 MB
Age rating9+4+
DeveloperCEI Conrad Electronic International (HK) LimitedRush Tools LLC

In-app purchases

None

Voltcraft DOK Series

No in-app purchases

3 purchases

Thermal Viewer

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • Pro Yearly$29.991 Year
One-time1
  • Lifetime Access$49.99

Questions

Is Voltcraft DOK Series free?
Voltcraft DOK Series is free to download, with no in-app purchases.
Is Thermal Viewer free?
Thermal Viewer is free to download, with in-app purchases available.
Do Voltcraft DOK Series or Thermal Viewer have ads?
Neither Voltcraft DOK Series nor Thermal Viewer shows ads.
Which is updated more often, Voltcraft DOK Series or Thermal Viewer?
Voltcraft DOK Series ships an update monthly, and Thermal Viewer every 5 days. Most recently, Voltcraft DOK Series was updated on October 28, 2026 and Thermal Viewer on November 5, 2026.

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