RfidAPP vs SleepWarning
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RfidAPP
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RFID Tester Hold a tag against your iPhone and see at once what is on it: the UID and the detected tag type. Scans land in the history, where you can comment, group and search them. WHAT YOUR IPHONE CAN READ • MIFARE / NTAG (ISO 14443) – NFC stickers and tags, access cards, tickets • ISO 7816 (ISO 14443) – smart cards and ID cards; only the UID is read • ISO 15693 – vicinity tags, library and industrial labels WHAT DOES NOT WORK • 125 kHz and 134 kHz (EM4100, HID Prox, T5577, pet chips) – the iPhone has no reader for this frequency; such tags are never detected during a scan • UHF, 860–960 MHz – EPC Gen2 labels from logistics and retail need a dedicated reader • Anything without NFC: Bluetooth trackers, QR and bar codes, proprietary radio keys The iPhone only reads NFC at 13.56 MHz. The app tells you up front instead of leaving you guessing – a built-in overview always shows which tag types work and which do not. SCANNING AND READING • UID as hexadecimal, decimal or binary – switchable, no conversion by hand • After every scan you see which tag family was detected • Every scan is logged with date and time ORDER IN THE HISTORY • A comment on every tag – "facility manager", "left shelf", whatever you need • Filter by duplicates and by whether a comment is set • Reset single entries or the whole history GROUPS • Collect UIDs in groups – per building, vehicle or tool checkout • Every group with a name and a description • A separate comment for each UID inside the group • Duplicate detection across all groups and the single history: you see at once when a tag is already filed elsewhere • Search across group name, description, UID and comment • Scan a tag and jump straight to its group SCOPE Single RFIDs without a limit, plus up to 5 groups with 10 UIDs each. WHO IT IS FOR Electricians, service technicians, facility management, workshops and warehouses – anywhere access cards, tool or inventory tags have to be told apart. REQUIREMENTS iPhone with NFC reading, iOS 18.0 or later. All data stays on the device.
SleepWarning
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Deutsch SleepWarning – Müdigkeit erkennen, bevor es gefährlich wird SleepWarning überwacht deine Augen in Echtzeit und erkennt zuverlässig, wenn sie zu lange geschlossen bleiben – ein typisches Anzeichen von Müdigkeit oder Sekundenschlaf. Bei Gefahr warnt dich die App sofort visuell und akustisch. Funktionen • Live-Erkennung von geschlossenen Augen • Zuverlässige Müdigkeits-Warnung • Kamera-basierte Analyse direkt auf dem Gerät • Bildschirm bleibt während der Überwachung aktiv • Einstellbare Empfindlichkeit und Alarmdauer • Datenschutzfreundlich: keine Cloud, keine Speicherung Kostenlos • Überwachung jederzeit nutzbar • Bis zu 3 Alarm-Warnungen pro App-Start kostenlos • Ideal zum Testen und Kennenlernen SleepWarning Pro (Einmaliger Kauf) • Unbegrenzte Alarm-Warnungen • Dauerhafte akustische & haptische Alarme • Volle Sicherheit ohne Unterbrechungen Hinweis: SleepWarning ist eine Assistenz-App und ersetzt keine Aufmerksamkeit, Pausen oder medizinische Beratung. Bitte verwende die App verantwortungsvoll. -------------------- English – App Store Description SleepWarning – Detect drowsiness before it becomes dangerous SleepWarning monitors your eyes in real time and reliably detects when they remain closed for too long – a common sign of drowsiness or microsleep. When a risk is detected, the app immediately alerts you visually and acoustically. Features • Real-time eye-closure detection • Reliable drowsiness warnings • On-device camera analysis (no cloud) • Screen stays awake during monitoring • Adjustable sensitivity and alarm timing • Privacy-friendly: no recording, no storage Free Version • Monitoring always available • Up to 3 alarm warnings per app session • Perfect for testing and evaluation SleepWarning Pro (One-time purchase) • Unlimited alarm warnings • Continuous sound & haptic alerts • Full safety without interruptions Disclaimer: SleepWarning is an assistance tool and does not replace attention, breaks, or medical advice. Always use the app responsibly.
Screenshots
Verdict
The clearest difference is in-app purchases: RfidAPP at none against SleepWarning's 1. SleepWarning's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. SleepWarning sells 1 one-off in-app purchase. RfidAPP asks for nothing beyond the download.
RfidAPP ships an update every 2 weeks, SleepWarning every 4 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | RfidAPP | SleepWarning |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Artem Wilhelmi | Tilo Greiner |
In-app purchases
RfidAPP
No in-app purchases
SleepWarning
- SleepWarning$1.99
Questions
Is RfidAPP free?
Is SleepWarning free?
Do RfidAPP or SleepWarning have ads?
Which is updated more often, RfidAPP or SleepWarning?
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