Comparison

Bolt Reader® vs Screw Identifier

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bolt Reader®

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
Read full description

Thanks to the innovative undertaking of creating the Bolt Reader® application, users have constant access to information on bolt tension. Information is presented in the form of bar graphs, which allows you to quickly spot screws that require attention. This application is specifically designed for Bolt-Cap Module devices produced by Transmission Dynamics. Transmission Dynamics; Redefining the Status Quo

About

Screw Identifier

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
Read full description

Instantly identify screws, bolts, nuts, and washers with just a photo. Screw Identifier uses advanced AI to analyze any fastener and deliver precise specifications in seconds. Whether you are a DIY enthusiast, professional contractor, mechanic, or hardware store employee, this app eliminates the guesswork from fastener identification. INSTANT AI IDENTIFICATION - Snap a photo of any screw, bolt, nut, or washer - Get instant AI-powered identification with high accuracy - Identify multiple fasteners in a single image - Works with both metric and imperial fasteners PRECISE MEASUREMENTS & SPECS - Exact length, diameter, and thread pitch - Head type classification (Phillips, hex, flat, Torx, socket, pan) - Thread standard detection (UNC, UNF, metric coarse, metric fine) - Material and finish identification (stainless steel, zinc, brass) - Drive type recognition COMPREHENSIVE FASTENER DATABASE - Screws: wood screws, machine screws, self-tapping, drywall, deck screws - Bolts: hex bolts, carriage bolts, lag bolts, eye bolts, U-bolts - Nuts: hex nuts, lock nuts, wing nuts, cap nuts, flange nuts - Washers: flat washers, lock washers, fender washers, spring washers - Plus: rivets, anchors, pins, and specialty fasteners SMART SIZE REFERENCE - Use a coin or ruler as reference for accurate measurements - Automatic scale calibration - Size comparison charts included AI ASSISTANT - Ask any question about fasteners and get expert answers - Tool compatibility recommendations - Torque specifications and installation tips - Material selection guidance HISTORY & REPORTS - Save all your scans in organized history - Generate detailed PDF reports - Share specifications with colleagues - Build your fastener collection library PERFECT FOR - DIY home improvement projects - Professional contractors and builders - Auto mechanics and repair shops - Hardware store employees - Plumbers and electricians - Furniture assembly - Industrial maintenance - Engineering and manufacturing SUBSCRIPTION OPTIONS - Weekly subscription with auto-renewal - Lifetime access with one-time purchase Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Privacy Policy: https://sites.google.com/view/screwidentifier-boltsize/ana-sayfa Terms of Use: https://sites.google.com/view/screw-identifier-bolt-size/ana-sayfa

Screenshots

Bolt Reader®4 screens
Screw Identifier4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Bolt Reader® versus Screw Identifier: the parameters behind the verdict, then further details
ParameterBolt Reader®Screw Identifier
PriceFreeFree
Rating5.0 (6 ratings) — better3.6 (20 ratings)
Positive reviews—0.0% of reviews
Number of ratings620 — better
Update frequencyEvery 5 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size24 MB52 MB
Age rating4+4+
DeveloperTransmission Dynamicsveysel yesilmen

Customer experience

Bolt Reader®

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Screw Identifier

All ratings20 ratings
Positive65.0%
Neutral5.0%
Negative30.0%
Written reviews8 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Bolt Reader®

One-time1
  • Full version$49.99
8 purchases

Screw Identifier

Subscriptions7
  • Weekly Access$4.997 Days
  • Get Premium Access7 Days trial$4.997 Days
  • Premium Weekly3 Days trial$4.997 Days
Show 4 more
  • Premium Weekly7 Days trial$5.997 Days
  • Get Premium Access$19.991 Year
  • Premium Yearly3 Days trial$29.991 Year
  • Premium Yearly3 Days trial2 variants$39.991 Year
One-time1
  • Lifetime Access$19.99

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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