CPU vs STOA Maintech
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CPU
This app provides detailed insights into your device's hardware and real-time diagnostics. It also offers tools to optimize storage by compressing media and cleaning contacts, along with a comprehensive suite for testing device sensors and network functions.
- Comprehensive device hardware insights
- Real-time diagnostics and sensor testing
- Video and image compression
- Duplicate contact cleanup
- Junk mail and spam message filtering
- Network diagnostics tools
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CPU-X is an all-in-one device information, hardware monitoring, and system diagnostic tool for iPhone and iPad. It provides real-time insights into device performance, temperature, hardware status, and network conditions with a clean and efficient interface. All data is processed locally on your device. No data is collected or uploaded. 1. Comprehensive Device Information: Device model and system information, CPU architecture and performance details, GPU information, memory (RAM) usage, storage usage and available space, battery health and charging status, device temperature monitoring (CPU and battery temperature), network configuration and connectivity status, sensor availability and access status. 2. Real-Time System Monitoring: CPU usage monitoring, memory usage tracking, storage analysis, network speed and latency testing, system status overview. 3. Device Temperature Monitoring: CPU temperature monitoring, battery temperature monitoring, charging temperature tracking, thermal load and performance impact analysis. 4. Widgets and Quick Access: Home screen widgets, real-time device status widgets, battery CPU and storage shortcuts, quick system overview panel. 5. Display and Refresh Rate Tools: High refresh rate detection (60Hz, 120Hz, ProMotion), screen refresh rate testing, display performance analysis, picture in picture support for floating monitoring view. 6. Advanced Device Diagnostic Tools: Sensor testing including accelerometer gyroscope magnetometer barometer altimeter device motion and pedometer, connectivity testing including GPS compass Bluetooth NFC iBeacon, audio and haptics testing including microphone speaker vibration and haptic feedback, display and touch testing including brightness multi-touch and screen color test, camera testing including camera and flash test, network tools including ping traceroute DNS lookup speed test and network scanner. 7. Privacy Protection: CPU-X does not collect store or transmit any personal data or non-personal data. All information remains fully local on your device and under your control. Contact: For feedback or support contact miaozhi.ai@gmail.com
STOA Maintech
Report maintenance issues quickly by submitting a photo and description. Service technicians are dispatched to your location for repairs.
- Submit maintenance requests
- Attach photos to requests
- Brief description of issue
- Service technician dispatch
- On-site repair services
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Have a maintenance issue? Our service technicians are here to help the moment you submit your request. Snap a photo, provide a brief description, and a STOA tech will be on their way to make your repair.
Screenshots
Verdict
The clearest difference is in-app purchases: STOA Maintech at none against CPU's 1. STOA Maintech also leads on ads (none vs shown) and rating (5.0 vs 4.7). CPU's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (114 vs 4). On price 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
Both are free to download. CPU sells 1 one-off in-app purchase. STOA Maintech asks for nothing beyond the download.
STOA Maintech holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CPU has 114 ratings behind it against 4, so its average is the more settled of the two.
CPU ships an update fortnightly, STOA Maintech every 2 months. The most recent releases landed on October 30, 2026 and October 11, 2026 respectively.
| Parameter | CPU | STOA Maintech |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (114 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 61.1% of reviews | — |
| Number of ratings | 114 — better | 4 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 170 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | CHENGDU MIAOZHI TECHNOLOGY CO., LTD. | Stoa Technologies |
Customer experience
CPU
STOA Maintech
In-app purchases
CPU
- Lifetime Premium$5.99
STOA Maintech
No in-app purchases
