# Scentience vs Concrete Calculator Tools

The clearest difference is review sentiment: Scentience at 100% against Concrete Calculator Tools's 0%. Scentience also leads on in-app purchases (none vs 4) and ads (none vs shown). Concrete Calculator Tools's advantage is ratings volume (51 vs 12). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Concrete Calculator Tools sells 4 in-app purchases, starting at $3.99 per 7 days. Scentience asks for nothing beyond the download.

Scentience holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 12 and 51 respectively. Written reviews point the same way: 100% of Scentience's written reviews are positive against 0% of Concrete Calculator Tools's.

Scentience ships an update monthly, Concrete Calculator Tools every 2 months. The most recent releases landed on October 30, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Scentience | Concrete Calculator Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/scentience/id6741092923/reviews)** | [4.7 (51 ratings)](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557/reviews) |
| Number of ratings | 12 | **51** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1.7 GB | 39 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, Mac | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kordel France](https://appshunter.io/developer/1215137099) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Scentience

[App page](https://appshunter.io/ios/app/scentience/id6741092923)

Visualize and interpret olfactory data from specialized devices. This tool offers real-time scent analysis, AI-powered source localization, and device calibration, all while prioritizing user privacy with offline functionality.

**Highlights:** Real-time olfaction data visualization, AI-powered scent source localization, Automatic device calibration, Offline operation for privacy, Multi-device swarming coordination, Chemical compound identification

**Features:** Vision Pro support

**In-app purchases:** none


### Concrete Calculator Tools

[App page](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557)

This app simplifies concrete volume calculations for professionals and DIYers. It offers flexible unit support and a free rectangular slab calculator, with advanced features available via subscription.

**Highlights:** Flexible unit support (metric/imperial), Rectangular slab calculator (free), Circular slab calculator, Circular column calculator, Post hole calculator, Slab from area calculator

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $3.99 | per 7 days |
| Monthly Pro | $5.99 | per month |
| Annual Pro | $19.99 | per year |
| One-Time Purchase | $85.00 | one-time |


## Frequently asked questions

### Is Scentience free?

Scentience is free to download, with no in-app purchases.

### Is Concrete Calculator Tools free?

Concrete Calculator Tools is free to download, with in-app purchases available.

### Which has better reviews, Scentience or Concrete Calculator Tools?

Scentience is rated higher. Scentience averages 5.0 out of 5 from 12 ratings, while Concrete Calculator Tools averages 4.7 from 51 ratings.

### Do Scentience or Concrete Calculator Tools have ads?

Concrete Calculator Tools shows ads; Scentience does not.

### Which is updated more often, Scentience or Concrete Calculator Tools?

Scentience ships an update monthly, and Concrete Calculator Tools every 2 months. Most recently, Scentience was updated on October 30, 2026 and Concrete Calculator Tools on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*