# slump.IO — Concrete Mix Design

> slump.IO — Concrete Mix Design (iPhone/iPad app by Mohammed Fasil.)

- Source: https://appshunter.io/ios/app/slumpio-concrete-mix-design/id6776067356 (this page in markdown: same URL + `.md`)
- Developer: [Mohammed Fasil](https://appshunter.io/developer/6776067358)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 6 MB
- Languages: English
- Released: 2026-06-08
- Data updated: 2026-08-03
- User reviews in markdown: https://appshunter.io/ios/app/slumpio-concrete-mix-design/id6776067356/reviews.md

## What is slump.IO?

slump.IO is a fast, accurate concrete mix design calculator for civil and structural engineers, students, and site teams. Enter your requirements and get a complete, standards-based mix design in seconds — then export a professional PDF report.

DESIGN TO YOUR STANDARD
- ACI 211.1 (absolute-volume method)
- IS 10262:2019
- BS 8500 / DoE — the DoE / BRE (BR 331) proportioning method
- Custom mode — build a mix from your own binder, w/c ratio, and aggregate fractions

EMBODIED CARBON
See the CO₂ footprint of every mix, broken down by cement, SCMs, aggregates, water, and admixtures, using region-specific emission factors. Compare mixes and understand the impact of supplementary cementitious materials at a glance.

PREDICTED STRENGTH (CUSTOM MODE)
An on-device machine-learning model, trained on open and publicly available concrete datasets, estimates 28-day compressive strength from your mix — with honest confidence bounds. Mixes outside the model's trained range are flagged rather than given a false-confident number.

BUILT FOR REAL WORK
- Supplementary cementitious materials (fly ash, GGBS, silica fume) with k-value handling
- Moisture and absorption corrections, batch quantities for any volume
- Professional PDF reports you can share or archive
- Works fully offline — nothing leaves your device
- Complete data-source and citation transparency in Settings

IMPORTANT
slump.IO is an independent app and is not affiliated with or endorsed by ACI, BIS, BSI, BRE, or any standards body. All outputs are indicative aids for preliminary design, estimation, and education only. Every mix must be independently reviewed by a qualified engineer and validated through trial mixes before any field, structural, or commercial use.


## Version history (last 2 releases)

### 1.1 — 2026-07-31

Version 1.1

- Embodied carbon — every mix now shows its CO₂ footprint, broken down by constituent, using region-specific emission factors. Tap the card to expand the full breakdown.
- Predicted 28-day strength (Custom mode) — an on-device machine-learning model trained on open, publicly available concrete datasets estimates compressive strength from your mix, with clear confidence bounds so out-of-range mixes never show a false-confident number.
- Verified BS mode — the BS 8500 / DoE mode now runs the full DoE / BRE (BR 331) proportioning method end to end.
- PDF reports now include the embodied-carbon and predicted-strength sections.
- New onboarding, a refreshed splash screen, and a first-run disclaimer.
- Full data-source and citation transparency in Settings for every standard, emission factor, and dataset used.

Thanks for using slump.IO. Feedback is always welcome.

### 1.0 — 2026-06-08

No release notes.

## More apps by Mohammed Fasil

- [UHP.x — UHPC Mix, Curing Track](https://appshunter.io/ios/app/uhpx-uhpc-mix-curing-track/id6779944128)

All apps by Mohammed Fasil: https://appshunter.io/developer/6776067358

## Related topics

[silica](https://appshunter.io/ios/topics/silica)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-03.*