# Screw Identifier vs ThreadChaser

The clearest difference is update cadence: ThreadChaser at every 5 days against Screw Identifier's every 5 months. Screw Identifier's advantage is iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Screw Identifier sells 8 in-app purchases, starting at $4.99 per 7 days and ThreadChaser sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

Screw Identifier ships an update every 5 months, ThreadChaser every 5 days. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Screw Identifier | ThreadChaser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (23 ratings)](https://appshunter.io/ios/app/screw-identifier-bolt-id/id6759244718/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 2 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [veysel yesilmen](https://appshunter.io/developer/1801211273) | [JAMIE SAM PARTOVI](https://appshunter.io/developer/1891387720) |

## What reviewers say

### Screw Identifier

[App page](https://appshunter.io/ios/app/screw-identifier-bolt-id/id6759244718)

Instantly identify screws, bolts, nuts, and washers using AI with a photo. Get precise specifications, measurements, and material details. Perfect for DIYers, contractors, and mechanics.

**Highlights:** AI-powered photo identification, Precise measurements and specs, Comprehensive fastener database, Smart size reference with calibration, AI assistant for fastener questions, History and report generation

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $4.99 | per 7 days |
| Get Premium Access | $4.99 | per 7 days |
| Premium Weekly | $4.99 | per 7 days |
| Premium Weekly | $5.99 | per 7 days |
| Get Premium Access | $19.99 | per year |
| Premium Yearly | $29.99 | per year |
| Premium Yearly | $39.99 | per year |
| Lifetime Access | $19.99 | one-time |


### ThreadChaser

[App page](https://appshunter.io/ios/app/threadchaser/id6761772249)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThreadChaser Pro | $2.99 | per year |


## Frequently asked questions

### Is Screw Identifier free?

Screw Identifier is free to download, with in-app purchases available.

### Is ThreadChaser free?

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

### Do Screw Identifier or ThreadChaser have ads?

Neither Screw Identifier nor ThreadChaser shows ads.

### Which is updated more often, Screw Identifier or ThreadChaser?

Screw Identifier ships an update every 5 months, and ThreadChaser every 5 days. Most recently, Screw Identifier was updated on October 15, 2026 and ThreadChaser on October 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.*