# ColourTemp — Colour/Flicker Meter for Video > Color temperature and flicker meter for videographers and cinematographers. (iPhone/iPad app by High Water Films Limited.) - Source: https://appshunter.io/ios/app/colourtemp/id6776435214 (this page in markdown: same URL + `.md`) - Developer: [High Water Films Limited](https://appshunter.io/developer/6776435576) - Category: Photo & Video - Price: Free with in-app purchases - Rating: 2.30/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 2 MB - Languages: American English - Released: 2026-06-09 - Data updated: 2026-08-27 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/colourtemp/id6776435214/reviews.md ## What is ColourTemp? ColourTemp is a colour temperature and flicker detection tool built for working videographers, DPs, cinematographers and gaffers. Point the camera at any light source for an instant Kelvin reading. Switch to flicker mode to detect mains-frequency flicker before it becomes a post problem. COLOUR TEMPERATURE Measure light from 2500K candlelight to 9900K open sky. White balance is locked to a fixed 5600K reference for consistent, repeatable readings across a shoot. Readings are close approximations — a fast, practical guide for the set, not a replacement for a calibrated colorimeter. FLICKER DETECTION Uses 240fps camera sampling and FFT analysis to detect 50Hz and 60Hz mains flicker and harmonics. Also flags PWM dimming on LED fixtures that conventional measurement misses. BANDING RISK CALCULATOR Set your project frame rate and shutter speed. ColourTemp calculates instantly whether your current combination will produce banding — and can snap to a safe setting automatically. FREEZE & COMPARE Pause a reading to lock a reference. Adjust frame rate and shutter speed while the measurement stays frozen — ideal for comparing multiple fixtures or matching practical lamps. CALIBRATION Point at a known 5600K reference and take a five-second calibrated reading. The app stores a custom offset for your device and shooting conditions, improving consistency across a whole production. Built by a working DP — because practical fixtures don't ask permission, and bad light costs money in post. No account. No data collected. Everything runs on your device. Available as an annual subscription. Pricing and terms are shown at first launch. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Color temperature measurement (2500K-9900K) - Mains frequency flicker detection (50Hz/60Hz) - PWM dimming detection - Banding risk calculator - Freeze and compare readings - Device calibration for consistency ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | ColourTemp Annual | $9.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime access | $19.99 | one-time | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/colourtemp/id6776435214/reviews.md ### 1/5 — Can’t purchase lifetime license *2026-07-08* Seems very promising! I heard about this on the developer’s YT channel in a video he did about a unique travel setup for the Komodo-X. However, whenever I click the lifetime access button, I’m met with a “Purchase Error” dialogue window. Hope this gets sorted out so I can test it out properly—would be useful for the environments where I primarily shoot. **Developer response:** Fixed! Apologies, it turns out navigating the app review process and working out "non-consumable in-app purchases" is a different skill set to actual app development. Whodathunk it. ### 1/5 — Lifetime option does not work *2026-07-03* The lifetime subscription option says it can’t contact the App Store, even though clicking the subscription option pops up the payment screen as expected. Since there is no way to access the app without paying and since I don’t need another subscription, this renders the app fully useless for me. **Developer response:** Fixed! Apologies, it turns out navigating the app review process and working out "non-consumable in-app purchases" is a different skill set to actual app development. Whodathunk it. ## Frequently asked questions about ColourTemp ### What is ColourTemp's primary function? ColourTemp measures the color temperature of light sources in Kelvin and detects mains-frequency flicker, helping videographers ensure consistent lighting and avoid issues in post-production. ### Does ColourTemp have ads? No, ColourTemp does not contain advertisements. The app is built to run entirely on your device without data collection. ### How accurate are ColourTemp's readings? Readings are close approximations, providing a fast, practical guide for the set. For precise measurements, a calibrated colorimeter is recommended. ### What is the banding risk calculator for? The banding risk calculator helps determine if your project's frame rate and shutter speed combination will produce banding. It can also automatically adjust to a safe setting. ### Can I compare different lights with ColourTemp? Yes, the 'Freeze & Compare' feature allows you to pause a reading to lock a reference. You can then adjust frame rate and shutter speed while the measurement remains frozen, ideal for comparing multiple fixtures. ### How often is ColourTemp updated? The app was last updated on July 10, 2026, with version 1.0.4. Specific update frequency is not detailed, but it is actively maintained. ### What devices does ColourTemp support? ColourTemp is available for iPhone devices. ### What is the subscription cost for ColourTemp? ColourTemp is available as an annual subscription. The 'ColourTemp Annual' plan costs $9.99 per year, with pricing details shown at first launch. ## Version history (last 5 releases) ### 1.0.7 — 2026-07-31 Improved flicker detection in bright environments ### 1.0.6 — 2026-07-26 Fixed shutter default persistence and fps/angle coupling in flicker mode. ### 1.0.5 — 2026-07-24 Adds swipe gesture to change between modes ### 1.0.4 — 2026-07-10 Adds in app purchase for lifetime access. ### 1.0.3 — 2026-06-23 Lifetime access option --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*