CRSI Rebar Reference vs TBM Post Tension
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
TBM Post Tension
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binni's TBM production tracker makes it very easy for tunneling construction teams to collaborate while managing operation and quality during tunnel construction operations. It will support your teams to report production and quality of your operation and to visualize multiple insights and sensor data generated by your TBM. This is an enterprise application and it's subscription is only available for organizations. Please refer to your employer for access to the features of this application.
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Verdict
The clearest difference is in-app purchases: TBM Post Tension at none against CRSI Rebar Reference's 3. On price, update cadence, ads and device support 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. CRSI Rebar Reference sells 3 one-off in-app purchases. TBM Post Tension asks for nothing beyond the download.
CRSI Rebar Reference ships an update every 5 weeks, TBM Post Tension every 3 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.
| Parameter | CRSI Rebar Reference | TBM Post Tension |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (16 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 51 MB | 23 MB |
| Age rating | 17+ | 4+ |
| Developer | Concrete Reinforcing Steel Institute | binni |
In-app purchases
CRSI Rebar Reference
- CRSI - Rebar Identifier Module$2.99
- CRSI Development Length ACI$4.99
- CRSI Development length AASHTO$4.99
TBM Post Tension
No in-app purchases
Questions
Is CRSI Rebar Reference free?
Is TBM Post Tension free?
Do CRSI Rebar Reference or TBM Post Tension have ads?
Which is updated more often, CRSI Rebar Reference or TBM Post Tension?
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