BlankState Diagnostic vs Semaphor
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
BlankState Diagnostic
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BlankState Diagnostic is a comprehensive mobile device hardware testing tool designed for ITAD operators, refurbishers, and enterprise IT teams. Launched as an App Clip from a QR code, it runs 33 hardware diagnostic tests across sensors, cameras, display, audio, connectivity, and biometrics โ with no App Store download required. AUTOMATED TESTS โข Wi-Fi, Bluetooth, GPS, Cellular, Ultra Wideband โข Accelerometer, Gyroscope, Magnetometer, Barometer โข Battery, Storage, True Tone, ProMotion, LiDAR โข Touch ID / Face ID, Wireless Charging SEMI-AUTOMATED TESTS โข Flashlight (camera-verified light emission) โข Brightness range, Proximity sensor, Ambient light โข Earpiece audio path, Volume buttons, Taptic Engine USER-ASSISTED TESTS โข Touchscreen grid with multi-touch verification โข Display colour cycle for dead pixel detection โข OLED burn-in, uniformity, and ghost touch detection โข Speaker and microphone with auto-detection โข All camera lenses including rear microphone Results are sent directly to the BlankState Mac application for inclusion in certified device health reports. Designed for R2v3 and ADISA compliance workflows.
Semaphor
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Semaphor answers simple question: Are my websites online and running? Stop finding out your site is down from a customer email. PERFECT FOR - Business owners wanting to know if their store is online - Agencies and freelancers watching client websites - Indie makers watching their own sites and landing pages - Developers watching endpoints and APIs FRESH WIDGETS Semaphor has beautiful widgets so you can see your status anywhere on your screen. Pick your refresh interval and turn on notifications so you never miss alert. THE APP IS YOUR DASHBOARD Add and organize your sites, see them all on one board, and tap any site for its response time, its recent checks and the latest HTTP result. Tap refresh to re-check every site at once. TELLS YOU WHEN IT BREAKS Turn on down alerts and Semaphor notifies you when a site goes red. Quiet hours hold alerts back overnight, and you can mute one site while you are busy fixing it. SSL CERTIFICATES BEFORE THEY EXPIRE See how many days are left on a site's SSL certificate and who issued it, and get a warning 14 days and 3 days before it expires. UPTIME HISTORY Uptime over 7 and 30 days, total downtime, the longest outage and the average response time, per site and across all of them. PRIVATE BY DESIGN No account, no sign-up. Semaphor contacts the websites you add and nothing else, and it stores your list and results on your device. No analytics, no tracking, no data collected about you. Ever. UPGRADE IF YOU NEED MORE Full version contains: Unlimited sites, down alerts, quiet hours, every check interval, website history, every widget size including Lock Screen. REQUIREMENTS - iPhone and iPad - iOS 17 or later - Free to download, no account required
Screenshots
Verdict
The clearest difference is in-app purchases: BlankState Diagnostic at none against Semaphor's 1. BlankState Diagnostic also leads on update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Semaphor sells 1 one-off in-app purchase. BlankState Diagnostic asks for nothing beyond the download.
BlankState Diagnostic ships an update every 4 days, Semaphor every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | BlankState Diagnostic | Semaphor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Every 2 months |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | BlankState | BEGRIP |
In-app purchases
BlankState Diagnostic
No in-app purchases
Semaphor
- Semaphor Lifetime$3.99
Questions
Is BlankState Diagnostic free?
Is Semaphor free?
Do BlankState Diagnostic or Semaphor have ads?
Which is updated more often, BlankState Diagnostic or Semaphor?
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