Comparison

RfidAPP vs SleepWarning

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RfidAPP

Features
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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.

About

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

RfidAPP4 screens
SleepWarning2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SleepWarning sells 1 one-off in-app purchase. RfidAPP asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 4 level
RfidAPP versus SleepWarning: the parameters behind the verdict, then further details
ParameterRfidAPPSleepWarning
PriceFreeFree
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS18.017.6 — better
Further details — not scored
Size18 MB7 MB
Age rating4+4+
DeveloperArtem WilhelmiTilo Greiner

In-app purchases

None

RfidAPP

No in-app purchases

1 purchases

SleepWarning

One-time1
  • SleepWarning$1.99

Questions

Is RfidAPP free?
RfidAPP is free to download, with no in-app purchases.
Is SleepWarning free?
SleepWarning is free to download, with in-app purchases available.
Do RfidAPP or SleepWarning have ads?
Neither RfidAPP nor SleepWarning shows ads.
Which is updated more often, RfidAPP or SleepWarning?
RfidAPP ships an update every 2 weeks, and SleepWarning every 4 days. Most recently, RfidAPP was updated on November 8, 2026 and SleepWarning on November 9, 2026.

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