Thermals vs onlinegdb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
onlinegdb
Write, compile, and run code on your mobile device with a professional IDE. Supports over 39 programming languages with syntax highlighting, real-time execution, and code management features.
- Support for 39+ programming languages
- Professional code editor with syntax highlighting
- Real-time code execution
- Code snippet saving and organization
- Light and dark themes
- Optimized for phones and tablets
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OnlineGDB Mobile – Professional Code Compiler and IDE Write, compile, and run code on the go with OnlineGDB Mobile, a comprehensive mobile coding solution supporting more than 39 programming languages. OnlineGDB Mobile brings the power of the popular OnlineGDB platform to your phone or tablet, allowing you to code, test, and experiment anytime, anywhere. Key Features Support for 39+ Programming Languages C, C++, Java, Python, JavaScript (Node and Rhino), TypeScript, Kotlin, PHP, C# (Mono and .NET), Go, Rust, Swift, Ruby, Perl, Bash, Lua, Dart, R, Haskell, Scala, OCaml, Fortran, Pascal, COBOL, Assembly (GCC and NASM), Objective-C, Prolog, Groovy, Ada, Zig, D, Tcl, Smalltalk, SQLite, C3, PascalABC.NET, and Visual Basic. Professional Code Editor Syntax highlighting for all supported languages Auto-indentation and code formatting Light and dark themes Adjustable font sizes Line numbers and error highlighting Undo and redo support Powerful Compilation Features Real-time code execution Interactive and text-based input modes Custom compiler flags and arguments Command-line argument support Live output streaming Code Management Save and organize your code snippets for later use. Developer-Friendly Experience Works on both phones and tablets Optimized interface for coding on mobile devices Clean and intuitive design Perfect For Students learning programming Developers coding on the go Technical interview preparation Quick code testing and debugging Algorithm practice and problem solving Teaching programming concepts Competitive programming practice Powerful Yet Simple OnlineGDB Mobile combines the capabilities of a desktop IDE with the convenience of mobile devices. Execute complex programs, test algorithms, practice for interviews, or learn new programming languages directly from your phone or tablet. Always Accessible Whether you are traveling, studying, or simply away from your laptop, OnlineGDB Mobile lets you write and run code anytime. It is the perfect companion for developers and students who want a flexible coding environment. Supported Languages (Complete List) Ada, Assembly (GCC), Assembly (NASM), Bash, C, C# (Mono), C# (.NET), C++, C3, COBOL, D, Dart, Fortran, Go, Groovy, Haskell, Java, JavaScript (Node), JavaScript (Rhino), Kotlin, Lua, Objective-C, OCaml, Pascal, PascalABC.NET, Perl, PHP, Prolog, Python, R, Ruby, Rust, Smalltalk, SQLite, Swift, Tcl, TypeScript, Visual Basic, Zig. Start coding today with OnlineGDB Mobile, a powerful mobile compiler designed for developers, students, and programming enthusiasts.
Screenshots
Verdict
The clearest difference is rating: Thermals at 4.6 against onlinegdb's 3.8. Thermals also leads on review sentiment (83% vs 67%) and ratings volume (29 vs 5). onlinegdb's advantage is iOS requirement (15.6 vs 18.6). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Thermals holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Thermals has 29 ratings behind it against 5, 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 67% of onlinegdb's.
| Parameter | Thermals | onlinegdb |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (29 ratings) — better | 3.8 (5 ratings) |
| Positive reviews | 83.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 29 — better | 5 |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #112 — better | #149 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | George Garside | AVIRAJ PATEL |
Customer experience
Thermals
onlinegdb
In-app purchases
Thermals
No in-app purchases
onlinegdb
No in-app purchases









