PhoneDiagnostix vs MainframeMonitor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhoneDiagnostix
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PhoneDiagnostix zeigt dir in Echtzeit alle wichtigen Systemdaten deines iPhones – übersichtlich und auf einen Blick. FUNKTIONEN: • CPU-Auslastung in Echtzeit • RAM-Verbrauch und freier Speicher • Akkustand, Ladestand und Wärmezustand • Netzwerkgeschwindigkeit (WLAN & Mobilfunk) • Speichernutzung intern • Vollständige Geräteinformationen
MainframeMonitor
Transform your iPhone into a vintage mainframe with a nostalgic CRT display. Monitor live system stats like battery, CPU, and memory, all within an authentic retro console experience. Includes hidden classic text-based games.
- Live system monitoring (battery, CPU, memory, storage)
- Home screen widgets
- Authentic CRT effects (glow, scanlines)
- Retro boot sequence
- Hidden classic text-based games
- Customizable color themes (Green, Amber)
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Turn your iPhone into a mainframe from the golden age of computing. MAINFRAME MONITOR shows your device's live stats wrapped in a nostalgic CRT console – complete with phosphor glow, scanlines, a boot sequence and satisfying key clicks. Choose between classic GREEN or warm AMBER, each with its own matching app icon. ■ LIVE SYSTEM MONITOR • Battery, CPU, memory and free storage • Uptime, network status and device info • All in real time, right on the glowing screen ■ HOME SCREEN WIDGET • Keep your key system stats always in view • In the same retro CRT style ■ REAL MAINFRAME FEELING • Authentic boot sequence on launch • Scanlines, glow and CRT effects • Terminal-style PF function-key controls ■ HIDDEN CLASSIC GAMES • Snake, Hamurabi, Void Patrol and Bagels • Text-based retro games, just like on the old terminals ■ FAIR & PRIVATE • Completely free • No ads, no trackers, no accounts • All data stays on your device Whether as a stylish system monitor, a home screen widget or a hands-on piece of computing history – MAINFRAME MONITOR brings back the charm of the old data centers. Made with attention to detail. Be sure to check out my other apps right inside the app.
Screenshots
Verdict
The clearest difference is update cadence: MainframeMonitor at every 10 days against PhoneDiagnostix's monthly. 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.
PhoneDiagnostix ships an update monthly, MainframeMonitor every 10 days. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | PhoneDiagnostix | MainframeMonitor |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Sebastian Kirschner | Ralf Langhoff |
In-app purchases
PhoneDiagnostix
No in-app purchases
MainframeMonitor
No in-app purchases
Questions
Is PhoneDiagnostix free?
Is MainframeMonitor free?
Do PhoneDiagnostix or MainframeMonitor have ads?
Which is updated more often, PhoneDiagnostix or MainframeMonitor?
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