QRReader vs Olsberg OEC 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QRReader
Instantly scan QR codes and barcodes with a simple, fast application. Save your scan history, easily copy and share content, and use a light mode for dark environments. No internet connection is needed for safe and reliable scanning.
- Scan QR codes and barcodes
- Save scan history
- Copy and share scanned content
- Light mode for dark environments
- Offline scanning capability
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This app is a super simple and fast QR code reader. Just open the app and point your camera at a QR code to scan it instantly. No complicated operations required, making it easy for beginners to use.\n\n【Main Features】\n・Scan QR codes and barcodes\n・Save scan history\n・Easily copy and share URLs or text\n・Use light mode for scanning in dark environments\n・No internet connection required for safety\n\nPerfect for those looking for a quick and reliable QR code reader. Download now and try it out!
Olsberg OEC 4
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Application for automatic combustion control OEC 4. The OEC 4 automatic combustion control regulates the combustion process itself by means of a microprocessor unit, which results in optimization of combustion depending on the air supply to the combustion chamber by means of an electronically controlled air damper. Automatic combustion control OEC 4 - optimises combustion depending on the flue gas temperature to maximise efficiency. - meets current emission requirements - prevents the appliance from overheating - ensures safe heating - maintains the combustion process at rated performance - extends the life of the appliance by optimising combustion - all visual and acoustic information is communicated to the customer via the OEC 4 app and directly on the appliance - the ideal time for refuelling is indicated acoustically and visually by an LED directly on the appliance - consumption is reduced by up to 30% compared to appliances without combustion control
Screenshots
Verdict
The clearest difference is in-app purchases: Olsberg OEC 4 at none against QRReader's 2. Olsberg OEC 4 also leads on ads (none vs shown). On price, update cadence, 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. QRReader sells 2 in-app purchases, starting at $4.99 per month. Olsberg OEC 4 asks for nothing beyond the download.
QRReader ships an update every 7 months, Olsberg OEC 4 every 8 months. The most recent releases landed on June 4, 2026 and September 18, 2026 respectively.
| Parameter | QRReader | Olsberg OEC 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 73 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | kota tada | Timpex |
In-app purchases
QRReader
- Ad-free for 1 month7 Days trial$4.991 Month
- Ad-free for 1 year14 Days trial$49.991 Year
Olsberg OEC 4
No in-app purchases
Questions
Is QRReader free?
Is Olsberg OEC 4 free?
Do QRReader or Olsberg OEC 4 have ads?
Which is updated more often, QRReader or Olsberg OEC 4?
Other comparisons
