Comparison

CRSI Rebar Reference vs FRPRCS17

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

Head to head
About

CRSI Rebar Reference

Access essential data for reinforcing bars (rebar) including specifications, hook details, and marking requirements. This app serves as a quick reference for industry standards and links to online resources.

Highlights
  • ASTM standard reinforcing bar specifications
  • Standard hook details (90, 135, 180 degrees)
  • Stirrup/tie hook details
  • ASTM reinforcing bar marking requirements
  • Minimum yield and tensile requirements
  • Links to CRSI online resources
Features
Read full description

QUICK REFERENCE! This ready reference app from the Concrete Reinforcing Steel Institute is a handy desk and field resource and includes information on ASTM standard reinforcing bars (rebar), standard hook details, standard stirrup/tie hook details, and ASTM reinforcing bar marking requirements. The app provides standard rebar specifications including sizes, diameters, areas and weights along with 90-, 135- and 180-degree hook details. Minimum yield and minimum tensile requirements per ASTM are also included. Industry standard bar markings for inch-pound rebar is illustrated for grades 40, 50, 60, 75, 80, 100 (A615), 100 (A1035), and 120. Links to the CRSI’s online resources are included.

About

FRPRCS17

Read full description

The 17th International Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS17) will take place from July 6 to 8, 2026, in Girona, Spain. The symposium is jointly organized by the University of Girona, Universitat Politècnica de Catalunya, University of the Balearic Islands, and University of Sheffield. FRPRCS17 will bring together researchers, engineers, practitioners, industry representatives, and manufacturers involved in the development and application of FRP and composite materials in civil engineering. The symposium will address both new construction and the strengthening, rehabilitation, and preservation of existing infrastructure and structures. The technical program of FRPRCS17 includes a wide range of scientific and professional activities, including: (i) keynote lectures delivered by internationally recognized experts, providing state-of-the-art insights into FRP technologies and their future developments; (ii) regular parallel technical sessions presenting the latest research findings, innovative applications, and practical developments related to FRP composites in civil engineering; (iii) special sessions dedicated to emerging and specialized topics, designed to complement and enrich the regular program; (iv) the Young Researchers' Event, focused on career perspectives and opportunities for the next generation of researchers and professionals in the FRP field; (v) Women in FRP, a special plenary session and roundtable discussion celebrating and promoting the contribution of women in FRP research and practice; (vi) Meet the Editors session, where editors from leading international journals, including Journal of Composites for Construction, Construction and Building Materials, Journal of Building Engineering, Structural Concrete, Advances in Structural Engineering, and Materials and Structures, will share guidance and practical advice on academic publishing and scientific writing; (vii) conference award initiatives, including the IIFC Best Paper Award and the RILEM Best Paper Award for Young Researchers, aimed to encourage excellence and innovation in FRP research; and (viii) technical visits to outstanding engineering and construction projects, including the Sagrada Família, the extension works of Barcelona Metro Line 8, and the construction works of Barcelona Metro Line 9. The FRPRCS17 Conference App will provide attendees with convenient access to the full conference program, session schedules, speaker information, abstracts, venue details, technical visit information, notifications, and networking opportunities throughout the symposium. This application provides following features: * Access to up to date agenda (sessions, speeches, speakers) * Easy access to conference's key information (venue, accommodation, sponsors etc.) * Conference's venue maps * Offline functionality. Application does not required active Internet connection * Conference news (delivered via Twitter)

Screenshots

CRSI Rebar Reference4 screens
FRPRCS172 screens

Verdict

The call

The clearest difference is in-app purchases: FRPRCS17 at none against CRSI Rebar Reference's 3. FRPRCS17 also leads on update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (13.0 vs 15.1). CRSI Rebar Reference's advantage is device support. On price 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. CRSI Rebar Reference sells 3 one-off in-app purchases. FRPRCS17 asks for nothing beyond the download.

UpkeepUpdate frequency

CRSI Rebar Reference ships an update every 5 weeks, FRPRCS17 every 2 weeks. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 6 level
CRSI Rebar Reference versus FRPRCS17: the parameters behind the verdict, then further details
ParameterCRSI Rebar ReferenceFRPRCS17
PriceFreeFree
Rating3.3 (16 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings16 — better—
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNo—
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPod — better—
Requires iOS15.113.0 — better
Further details — not scored
Size51 MB17 MB
Age rating17+4+
DeveloperConcrete Reinforcing Steel InstitutePoznan Supercomputing and Networking Center

In-app purchases

3 purchases

CRSI Rebar Reference

One-time3
  • CRSI - Rebar Identifier Module$2.99
  • CRSI Development Length ACI$4.99
  • CRSI Development length AASHTO$4.99
None

FRPRCS17

No in-app purchases

Questions

Is CRSI Rebar Reference free?
CRSI Rebar Reference is free to download, with in-app purchases available.
Is FRPRCS17 free?
FRPRCS17 is free to download, with no in-app purchases.
Which is updated more often, CRSI Rebar Reference or FRPRCS17?
CRSI Rebar Reference ships an update every 5 weeks, and FRPRCS17 every 2 weeks. Most recently, CRSI Rebar Reference was updated on October 4, 2026 and FRPRCS17 on September 29, 2026.

Other comparisons