Comparison

D vs Thermal Master

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

Head to head
About

D

Features
Read full description

D-Vision is the companion software for electronic sighting devices produced by DiscoveryOpt, which can help you manage your devices. The specific features are as follows: 1. Device Connection 2. Real-time Device Video Streaming 3. Device-side Control 4. Access and Download of the Database 5. Firmware Update

About

Thermal Master

This utility app connects to specific thermal camera models, offering enhanced thermal imaging capabilities. It features an upgraded algorithm for clearer heat source detection and supports digital zoom for precise target identification. The app provides lifetime free software upgrades.

Highlights
  • Connects to P, X, DV, and T2Max series thermal cameras
  • Upgraded Insight+ algorithm for noise suppression
  • Enhanced heat source visibility
  • Up to 15x digital zoom
  • Lifetime free software upgrades
Read full description

Thermal Master is the global leader in phone thermal imaging, with a decade of experience and 8 world records. This all-in-one thermal camera and night vision app works with the P Series (P1/P2 Pro/P3) phone thermal cameras, the foldable-screen birdwatching thermal imagers DV2 and DV3, and the outdoor night-vision phone thermal cameras T2 Max, X2. As the only thermal imaging brand to win a Tom's Guide AI Award, and recognized by Forbes, NotebookCheck, and TechRadar, Thermal Master keeps pushing thermal imaging technology to be smaller, sharper, and smarter — with free lifetime software upgrades on every device. What's New in This Update: - Insight+ 4.0 imaging algorithm: AI adapts to different environments, better distinguishes real heat sources from summer-heat false targets, and reduces background noise. - Super Birdwatching 4.0: an industry-first algorithm that suppresses the thermal "sky effect" over tree canopies, making birds easier to spot with this thermal bird finder. - Sky Guard 3.0: intelligent sun-damage protection for the thermal detector. - Razor-Sharp X³ imaging algorithm: sharper, more defined edges on subtle heat sources. - TruePix temperature measurement algorithm: refined calibration for targets with different reflectivity. - Shutterless technology: continuous thermal observation with no shutter interruption. Choose the right app for your device: this "Thermal Master" app supports P1/P2/P2 Pro/P3/P3 Lite/T2 Max/X2/DV2/DV3.

Screenshots

D3 screens
Thermal Master4 screens

Verdict

The call

The clearest difference is update cadence: Thermal Master at every 3 weeks against D's every 6 weeks. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

D ships an update every 6 weeks, Thermal Master every 3 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 9 level
D versus Thermal Master: the parameters behind the verdict, then further details
ParameterDThermal Master
PriceFreeFree
Rating—2.5 (15 ratings) — better
Positive reviews—36.4% of reviews
Number of ratings—15 — better
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size47 MB190 MB
Age rating17+17+
DeveloperShenzhen DiscoveryOpt Technology Co., Ltd.Thermal Master Technology Co.,Ltd.

In-app purchases

None

D

No in-app purchases

None

Thermal Master

No in-app purchases

Questions

Is D free?
D is free to download, with no in-app purchases.
Is Thermal Master free?
Thermal Master is free to download, with no in-app purchases.
Do D or Thermal Master have ads?
Neither D nor Thermal Master shows ads.
Which is updated more often, D or Thermal Master?
D ships an update every 6 weeks, and Thermal Master every 3 weeks. Most recently, D was updated on October 5, 2026 and Thermal Master on October 12, 2026.

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