CoolMonitor vs sysdiagnose
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoolMonitor
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CoolMonitor helps you grasp the status of your device at a glance. CPU usage, screen refresh rate, network activity, storage and heat status are all concentrated in a clear panel. After enabling the charging detection, the charging power can be continuously observed. The results are only saved on the device itself, making it convenient to compare different charging processes. Key data can also be viewed at any time through native floating display, real-time activities, dynamic island and home screen widgets. Core functions View CPU usage, screen refresh rate, network activity, storage and heat status • Observe charging power • Review the charging history saved on this device • Continuously view key indicators through native system display • Rich and diverse custom display methods. And switch between Simplified Chinese, English and Traditional Chinese at any time. Privacy policy: https://zhangthree.cn/privacy.html Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
sysdiagnose
This utility app parses complex iOS diagnostic files into easy-to-understand reports directly on your device. It offers a full checkup flow, structured insights into device health, and the ability to compare trends over time. Share reports as images, PDF, or JSON.
- Local parsing of sysdiagnose archives
- Structured device health reports
- On-device benchmark and scoring
- Compare health and battery trends
- Shareable PDF and JSON reports
- Home Screen widgets for quick access
- Multi-language support
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Sysdiagnose — Local parsing. Clear device health. Hard to read a sysdiagnose archive? Panda Sysdiagnose turns complex iOS diagnostic files into clear, structured reports — entirely on your device, with no account and no diagnostic uploads. Built for iPhone and iPad. What you get • Import or Share Extension Open sysdiagnose .tar.gz, .zip, or .tar from Files, Analytics data, or the in-app picker. Tap “Open & Analyze” in the share extension to jump straight in. • Full checkup flow Chain import → analysis → on-device benchmark from Home; resume if you leave mid-way. • Structured reports Device overview, hardware vendors, battery detail, crash clusters, stability clues, accessory consistency and storage tips (heuristic — for reference only). • Explainable health score Combine diagnosis and optional flash / memory / CPU benchmarks into a score you can understand. • Same-device trends Compare health, battery and storage across analyses; switch blended vs diagnosis-only scoring. • Share images, PDF & JSON Preview share cards; save professional PDF/JSON reports locally and reopen anytime. • History, files & widgets Re-analyze, manage imports, and glance at your latest score from a Home Screen widget. • Guide & 17 languages Step-by-step help; UI in 17 languages including Simplified/Traditional Chinese, English, Japanese, Korean, and more. Privacy first Parsing and storage stay on-device. No diagnostic uploads. Delete history, files, and reports anytime. Disclaimer Results are for personal reference only and are not official Apple or repair-shop assessments. For warranty or service decisions, rely on Apple Support. Contact: eryeah1024@163.com
Screenshots
Verdict
The clearest difference is update cadence: sysdiagnose at every 3 days against CoolMonitor's every 3 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CoolMonitor ships an update every 3 weeks, sysdiagnose every 3 days. Both last shipped on October 29, 2026.
| Parameter | CoolMonitor | sysdiagnose |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (6 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 47 MB |
| Age rating | 17+ | 4+ |
| Developer | Zhangsan Software Co., Ltd., Enshi Prefecture, Hubei Province | 成都二耶科技有限公司 |
In-app purchases
CoolMonitor
No in-app purchases
sysdiagnose
No in-app purchases
Questions
Is CoolMonitor free?
Is sysdiagnose free?
Do CoolMonitor or sysdiagnose have ads?
Which is updated more often, CoolMonitor or sysdiagnose?
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