# Deflection Calculator vs Tool identifier

The clearest difference is in-app purchases: Deflection Calculator at none against Tool identifier's 2. Deflection Calculator also leads on ratings volume (4 vs 1) and device support (3 vs 1). Tool identifier's advantage is update cadence (every 3 weeks vs every 3 months). On price, rating and ads there is nothing between them.

Both are free to download. Tool identifier sells 2 in-app purchases, starting at $4.99 per 7 days. Deflection Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Deflection Calculator against 5.0 for Tool identifier. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Deflection Calculator ships an update every 3 months, Tool identifier every 3 weeks. Both last shipped on September 19, 2026.

## The numbers

| Metric | Deflection Calculator | Tool identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/deflection-calculator/id1528914419/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tool-identifier-toolfind/id6752267645/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 2 MB | 19 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Neill Mclachlan](https://appshunter.io/developer/1527884833) | [Karl Klein](https://appshunter.io/developer/1777618971) |

## What reviewers say

### Deflection Calculator

[App page](https://appshunter.io/ios/app/deflection-calculator/id1528914419)

Calculate tube and roll straightener deflection with this app. Input key parameters like diameter and material properties to get accurate results in inches or millimeters. Access past calculations and machine-specific data.

**Highlights:** Deflection calculation, Input outside diameter, roll center, yield, and Young's modulus, Output in inches or millimeters, Unit selector (imperial/metric), History of past calculations, Pre-set roll center values for over 50 machines, Pre-set Young's modulus for 6 metals

**Features:** macOS Compatibility

**In-app purchases:** none


### Tool identifier

[App page](https://appshunter.io/ios/app/tool-identifier-toolfind/id6752267645)

Instantly identify tools by taking a photo. Explore their purpose, usage tips, and alternative applications. Save identified tools to build a personal guide.

**Highlights:** Instant tool identification via photo, Detailed tool information and usage tips, Smart assistant for tool-related questions, Personal tool log for saved items, Explore alternative tool uses

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly plan | $4.99 | per 7 days |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Deflection Calculator free?

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

### Is Tool identifier free?

Tool identifier is free to download, with in-app purchases available.

### Which has better reviews, Deflection Calculator or Tool identifier?

Deflection Calculator and Tool identifier are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Deflection Calculator or Tool identifier have ads?

Neither Deflection Calculator nor Tool identifier shows ads.

### Which is updated more often, Deflection Calculator or Tool identifier?

Deflection Calculator ships an update every 3 months, and Tool identifier every 3 weeks. Most recently, Deflection Calculator was updated on September 19, 2026 and Tool identifier on September 19, 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.*