Comparison

Thermals vs Developer Colour Palette

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

Head to head
About

Thermals

Monitor your device's thermal state and processor activity to diagnose performance issues. Understand why your phone might be running slowly, charging slowly, or have reduced brightness due to overheating. Export data for further analysis with other development tools.

Highlights
  • Displays device thermal state
  • Shows active processor count
  • Monitors device uptime
  • Troubleshoots performance issues
  • Helps diagnose slow charging
  • Identifies brightness limitations
  • Exports raw data for analysis
Features
Read full description

Phone running slowly, charging slowly or low brightness? See if your device is overheating using Thermals. Thermals displays your device’s thermal state, as well as how many processors are active on your device and its uptime, as reported by iOS. Thermals helps troubleshoot: • Poor performance — iOS reduces processor speed and potentially disables processors temporarily when the device is hot. • Slow charging — battery charging causes a lot of heat and iOS can limit charging speed to reduce the additional heat that might make a device too hot. • Low maximum brightness — if your device screen stays dark despite being on full brightness, it could be limited by iOS due to heat. • Manufacturing defects — if not all processors are active when the device is cool and not in low power mode. Your device's thermal state is monitored regularly in the background and recorded in the app (if Background App Refresh is enabled). Open the app or tap the widget to record a data point manually. Export the raw data to file for corroboration with Screen Time, Xcode's Instruments, or other development tools. Also an independent Apple Watch app shows the thermal status, active processors and uptime, and thermal history of your watch.

About

Developer Colour Palette

Easily select, convert, and organize colors for your projects. Generate palettes from images or AI prompts, and share them with your team. Syncs across Apple devices.

Highlights
  • Color picker and value conversion (HEX, RGB, Swift)
  • Organize colors into palettes
  • Cloud sync across Apple devices
  • Share palettes with team members
  • Import images to extract colors
  • AI-powered palette generation
  • AI color detection from objects
Features
Read full description

Developer Colour Palette helps you to choose, convert, organise and share the colours that you use for the projects that you are working on. Choose a colour using the built in colour picker, or enter the colour values to see them converted to HEX, RGB and Swift code. You can then copy the colour codes with a single tap to use in your projects. The app automatically shows your recently used colours for reuse and allows you to add frequently used colours to your favourites. You can organise your colours further, by grouping them in to different palettes for each project or brand that you are working with, name the colours to describe what part of the project they are being used for and write notes on each palette and colour. The palettes you create and colours you add will be automatically synced to the cloud and accessible on all of your Apple devices. You can also share these palettes with other members of your design team or with a client, so that you are all working from the same colour palette. Invite others to your palette and set permissions for each person you invite, granting or denying them read, add, edit or remove access. You can also see any palettes that you have been sent within the app and choose to accept or deny the invitation, to add the palette to your shared list. The palettes you create and the palettes that are shared with you are automatically grouped and separated. Import an image, client’s logo or style guide file from your photo library, files or camera and use the magnified colour picker to choose a specific colour from the image. The app will automatically scan the image using AI and detect the dominant colours within the image. Once it has extracted the colours, you can create a new palette containing these colours with a single tap. If you need a little help with inspiration or to find the right colour for your project, you can use the AI Assistant tool to generate a palette or get the colour of an object. Enter a phrase such as “The sea” to see various shades of blue, “Giraffe” to see the colours of a giraffe or “New York Taxi” to be shown the colour code of the New York Taxi yellow. Once the assistant has detected the colours, you can then create a palette with these colours and it is automatically named from your search phrase. *Subscription required for some features described above, including cloud palettes, sharing features and AI features - Monthly usage limits apply to AI features. - Subscription Details - Developer Colour Palette requires a monthly subscription after your 14 day free trial. Your subscription can be cancelled at any time. No long term commitment required. Subscriptions will be charged to your iTunes account at confirmation of purchase. Your subscription will automatically renew unless automatic renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscriptions and automatic renewal status in Account Settings after purchase. Price may vary by location. Privacy Policy: https://smudge.app/privacy Terms and Conditions: https://smudge.app/app-terms

Screenshots

Thermals4 screens
Developer Colour Palette4 screens

Verdict

The call

The clearest difference is review sentiment: Thermals at 83% against Developer Colour Palette's 0%. Thermals also leads on price (Free vs $0.49) and rating (4.5 vs 1.0). Developer Colour Palette's advantage is update cadence (monthly vs every 3 months) and iOS requirement (15.0 vs 18.6). On ads, chart position 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

Thermals is free to download; Developer Colour Palette costs $0.49 up front. Developer Colour Palette sells 1 in-app purchase, starting at $2.99 per month. Thermals asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thermals holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Thermals has 28 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 83% of Thermals's written reviews are positive against 0% of Developer Colour Palette's.

UpkeepUpdate frequency

Thermals ships an update every 3 months, Developer Colour Palette monthly. Both last shipped on September 22, 2026.

Scorecard8 real differences · 3 level
Thermals versus Developer Colour Palette: the parameters behind the verdict, then further details
ParameterThermalsDeveloper Colour Palette
PriceFree — better$0.49
Rating4.5 (28 ratings) — better1.0 (2 ratings)
Positive reviews83.3% of reviews — better0.0% of reviews
Number of ratings28 — better2
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Best chart rank#190#130 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Mac — better
Requires iOS18.615.0 — better
Further details — not scored
Size3 MB10 MB
Age rating4+4+
DeveloperGeorge GarsideThomas Coomer

Customer experience

Thermals

All ratings28 ratings
Positive89.3%
Neutral3.6%
Negative7.1%
Written reviews30 reviews
Positive83.3%
Neutral6.7%
Negative10.0%

Developer Colour Palette

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Thermals

No in-app purchases

1 purchases

Developer Colour Palette

Subscriptions1
  • Cloud Palettes14 Days trial$2.991 Month

Questions

Is Thermals free?
Thermals is free to download, with no in-app purchases.
Is Developer Colour Palette free?
Developer Colour Palette costs $0.49, and also offers in-app purchases.
Which has better reviews, Thermals or Developer Colour Palette?
Thermals is rated higher. Thermals averages 4.5 out of 5 from 28 ratings, while Developer Colour Palette averages 1.0 from 2 ratings.
Do Thermals or Developer Colour Palette have ads?
Neither Thermals nor Developer Colour Palette shows ads.
Which is updated more often, Thermals or Developer Colour Palette?
Thermals ships an update every 3 months, and Developer Colour Palette monthly. Most recently, Thermals was updated on September 22, 2026 and Developer Colour Palette on September 22, 2026.
Which is more popular, Thermals or Developer Colour Palette?
Thermals currently peaks at #190 in the App Store charts, and Developer Colour Palette at #130. Chart position reflects recent download velocity rather than total install base.

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