Time Lines. vs HCC2D Decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time Lines.
Create a personalized, visual representation of time. Draw your own unique timeline and watch a marker move along it to indicate the current moment. This app offers an intuitive and observational approach to timekeeping.
- Draw custom timeline shapes
- Visual representation of time
- Intuitive timekeeping
- Observational approach
- Personalized timepiece
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Draw your own timeline. Every scribble you make becomes your intuitive timepiece, and a red dot moves along it, marking the present moment. Time is observation and calibration. Before hours and minutes, humans observed time in the world around them—the stretch of a shadow, the bloom of a flower, the quiet drift of the stars. We expand that timekeeping tradition. You create your own timeline—an arc, a wave, a winding trail—and watch time trace it. Time Lines is a chronological investigation by Shashwath Santosh and Nithin Eluvathingal.
HCC2D Decoder
Scan and decode HCC2D color codes and standard QR codes using your phone's camera. This app offers real-time scanning with robust error correction and is based on advanced barcode research.
- Decode HCC2D color codes
- Full QR code support
- Real-time camera scanning
- Robust detection and error correction
- No ads or registration
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This app allows you to scan and decode HCC2D and QR code symbols using your mobile camera. It is based on advanced research in high-capacity barcode technologies and provides reliable decoding. Key features: * Decode HCC2D color codes. * Full support for standard QR codes. * Real-time scanning using the camera. * Robust detection and error correction. * No ads and no registration required. HCC2D is a color two-dimensional code format that increases data capacity compared to traditional QR codes while preserving their structure. By using multiple colors, each module can encode more information, enabling higher data density in a compact symbol. The app captures images, detects barcode regions, corrects perspective distortions, and analyzes color or intensity patterns to reconstruct the encoded data. To transfer files from a desktop computer to your smartphone via a stream of HCC2D codes, use HCC2D Decoder together with the HCC2D Streamer desktop companion app. Notes: HCC2D codes can be created using the official online generator at hcc2d.com, the HCC2D Encoder application, the open-source CLI encoder, or the Debian/Ubuntu packages provided through the official HCC2D APT repository. * Low-quality color printing may reduce decoding performance * Best results are achieved with screen-displayed or high-quality printed codes and a high-resolution autofocus camera. * One-dimensional barcodes are intentionally not supported. References: * Querini, M. (2026). HCC2D Code Specification — Version 0.9.0. Zenodo. https://doi.org/10.5281/zenodo.22206528. Licensed under the Creative Commons Attribution-NoDerivatives 4.0 International License (CC BY-ND 4.0). * Querini, M. and Italiano, G. F. (2014). Reliability and Data Density in High Capacity Color Barcodes. Computer Science and Information Systems, 11(4), 1595-1615. * Querini, M., Grillo, A., Lentini, A., and Italiano, G. F. (2011). 2D Color Barcodes for Mobile Phones. IJCSA, 8(1), 136-155. * Querini, M. (2010). Analysis and Design of High-Capacity Two-Dimensional Codes. Development of the Reader for Desktop and Mobile Environments (Bilingual Digital Edition 2026, Version 1.0). Zenodo. https://doi.org/10.5281/zenodo.22206722 Notice: This application is an independent personal project and is not affiliated with any organization or institution.
Screenshots
Verdict
The clearest difference is rating: Time Lines. at 5.0 against HCC2D Decoder's 4.0. Time Lines. also leads on ratings volume (7 vs 1). On price, review sentiment, ads and in-app purchases 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.
Time Lines. holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Time Lines. has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | Time Lines. | HCC2D Decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | 1 |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Shashwath Santosh | Marco Querini |
Customer experience
Time Lines.
HCC2D Decoder
In-app purchases
Time Lines.
No in-app purchases
HCC2D Decoder
No in-app purchases









