Bar vs STS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bar
Instantly scan QR codes and barcodes using your device's camera. Open links, save your scan history, and share results quickly. This utility works offline and features a simple, user-friendly design for quick access to information.
- Fast QR and barcode scanning
- Scan QR codes from photos
- Save scan history
- Share and open links
- Offline scanning capability
- Lightweight and easy to use
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Bar-code Scanner – Quick QR and Barcode Reader Scan QR codes and barcodes instantly with your iPhone’s camera! Open links, save scans, and share results in seconds. Features: * Fast QR and Barcode Scanning – Quick scans for websites, coupons, and more * Scan from Photos – Decode QR codes from your gallery * Save Scan History – Keep track of past scans * Share and Open Links – Easily share results or open web pages * Works Offline – No internet needed for scanning * Lightweight and Easy to Use – Simple, no-fuss design Perfect for: Opening URLs, checking promo codes, sharing contact info, and more! Get Bar-code Scanner – Scan QR codes in a flash
STS
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It’s a data management platform to help with TBM tunneling. It provides TBM operation monitoring and allows users to have safe and reliable access to real-time monitoring. The platform would improve TBM tunneling efficiency and thus shorten construction duration. The platform is mainly designed to conduct distance monitoring, construction progress management and work report generation
Screenshots
Verdict
The clearest difference is ads: STS at none against Bar's shown. STS also leads on update cadence (every 2 weeks vs every 20 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
Bar ships an update every 20 months, STS every 2 weeks. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.
| Parameter | Bar | STS |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 42.9% of reviews | — |
| Update frequency | Every 20 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 13.2 |
| Further details — not scored | ||
| Size | 6 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Aishvarya Sadasivam | 中铁工程装备集团有限公司 |
In-app purchases
Bar
No in-app purchases
STS
No in-app purchases
