# Bolt Thread Identifier vs ScrewFinderAI

The clearest difference is update cadence: ScrewFinderAI at every 4 days against Bolt Thread Identifier's every 11 months. ScrewFinderAI also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bolt Thread Identifier ships an update every 11 months, ScrewFinderAI every 4 days. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Bolt Thread Identifier | ScrewFinderAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/bolt-thread-identifier/id6468966021/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 58 MB | 6 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Geared Design Consulting L.L.C.](https://appshunter.io/developer/1732325276) | [Brandon Horton](https://appshunter.io/developer/1844079517) |

## What reviewers say

### Bolt Thread Identifier

[App page](https://appshunter.io/ios/app/bolt-thread-identifier/id6468966021)

Identify bolt thread pitches by taking a photo. This app uses AI to match SAE-UNC, SAE-UNF, or metric pitches after a simple distance calibration. It's a handy tool for anyone working with fasteners.

**Highlights:** Photo-based thread pitch measurement, AI-driven pitch matching, Supports SAE-UNC, SAE-UNF, and metric threads, Simple distance calibration, Useful for fabricators and mechanics

**Features:** macOS Compatibility

**In-app purchases:** none


### ScrewFinderAI

[App page](https://appshunter.io/ios/app/screwfinderai/id6759080731)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bolt Thread Identifier free?

Bolt Thread Identifier is free to download, with no in-app purchases.

### Is ScrewFinderAI free?

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

### Do Bolt Thread Identifier or ScrewFinderAI have ads?

Neither Bolt Thread Identifier nor ScrewFinderAI shows ads.

### Which is updated more often, Bolt Thread Identifier or ScrewFinderAI?

Bolt Thread Identifier ships an update every 11 months, and ScrewFinderAI every 4 days. Most recently, Bolt Thread Identifier was updated on September 20, 2026 and ScrewFinderAI on September 17, 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.*