# AutoTech vs Scrap Science

The clearest difference is price: Scrap Science at Free against AutoTech's $1.99. Scrap Science also leads on update cadence (every 2 weeks vs every 32 months). AutoTech's advantage is in-app purchases (none vs 6). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Scrap Science is free to download; AutoTech costs $1.99 up front. Scrap Science sells 6 in-app purchases, starting at $9.99 per month. AutoTech asks for nothing beyond the download.

AutoTech ships an update every 32 months, Scrap Science every 2 weeks. The most recent releases landed on September 10, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | AutoTech | Scrap Science |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/scrap-science/id6648758210/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 71 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Steven Clarner](https://appshunter.io/developer/410979939) | [TY International LLC](https://appshunter.io/developer/1576465822) |

## What reviewers say

### AutoTech

[App page](https://appshunter.io/ios/app/autotech/id410979934)

This automotive calculator provides quick computations for over 45 formulas across various vehicle systems. It supports both U.S. and metric units, making it a versatile tool for mechanics, technicians, and enthusiasts.

**Highlights:** 45+ automotive formulas, Aerodynamics calculations, Chassis calculations, Drivetrain calculations, Engine calculations, Performance calculations, Suspension calculations, Tire calculations

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

**In-app purchases:** none


### Scrap Science

[App page](https://appshunter.io/ios/app/scrap-science/id6648758210)

This AI-powered app helps U.S. scrap recycling professionals identify scrap categories, assess material content, and impurity levels. It provides real-time pricing for identified materials, enabling profitable decisions on the spot. Streamline your workflow with this fast, easy, and reliable tool.

**Highlights:** AI-powered scrap identification, Material content assessment, Impurity level analysis, Real-time pricing, Workflow streamlining, Patent-authorized innovation

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly auto-subscription | $9.99 | per month |
| Enterprise Package 1 | $79.99 | per month |
| Enterprise Package 2 | $148.99 | per month |
| Enterprise Package 3 | $209.00 | per month |
| Enterprise Package 4 | $590.00 | per month |
| Try it out | $0.99 | one-time |


## Frequently asked questions

### Is AutoTech free?

AutoTech costs $1.99, with no in-app purchases.

### Is Scrap Science free?

Scrap Science is free to download, with in-app purchases available.

### Do AutoTech or Scrap Science have ads?

Neither AutoTech nor Scrap Science shows ads.

### Which is updated more often, AutoTech or Scrap Science?

AutoTech ships an update every 32 months, and Scrap Science every 2 weeks. Most recently, AutoTech was updated on September 10, 2026 and Scrap Science on June 11, 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.*