# Bolt Reader® vs Screw Identifier

The clearest difference is rating: Bolt Reader® at 5.0 against Screw Identifier's 3.6. Bolt Reader® also leads on monetization model (free vs free with in-app purchases) and update cadence (every 5 weeks vs every 5 months). Screw Identifier's advantage is ratings volume (20 vs 6). On price, ads, in-app purchases and device support there is nothing between them.

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

Bolt Reader® holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 6 and 20 respectively.

Bolt Reader® ships an update every 5 weeks, Screw Identifier every 5 months. The most recent releases landed on September 16, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Bolt Reader® | Screw Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/bolt-reader/id1554066006/reviews)** | [3.6 (20 ratings)](https://appshunter.io/ios/app/screw-identifier-bolt-id/id6759244718/reviews) |
| Number of ratings | 6 | **20** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 52 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Transmission Dynamics](https://appshunter.io/developer/1554066008) | [veysel yesilmen](https://appshunter.io/developer/1801211273) |

## What reviewers say

### Bolt Reader®

[App page](https://appshunter.io/ios/app/bolt-reader/id1554066006)

This application provides users with real-time bolt tension data through intuitive bar graphs. It is specifically designed to work with Bolt-Cap Module devices from Transmission Dynamics, helping users quickly identify screws needing attention.

**Highlights:** Real-time bolt tension information, Bar graph data visualization, Identify screws requiring attention, Designed for Bolt-Cap Module devices, Works with Transmission Dynamics hardware

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $49.99 | one-time |


### 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 |


## Frequently asked questions

### Is Bolt Reader® free?

Bolt Reader® is free to download, with in-app purchases available.

### Is Screw Identifier free?

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

### Which has better reviews, Bolt Reader® or Screw Identifier?

Bolt Reader® is rated higher. Bolt Reader® averages 5.0 out of 5 from 6 ratings, while Screw Identifier averages 3.6 from 20 ratings.

### Do Bolt Reader® or Screw Identifier have ads?

Neither Bolt Reader® nor Screw Identifier shows ads.

### Which is updated more often, Bolt Reader® or Screw Identifier?

Bolt Reader® ships an update every 5 weeks, and Screw Identifier every 5 months. Most recently, Bolt Reader® was updated on September 16, 2026 and Screw Identifier on September 30, 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.*