Chaptr vs Metal Calculator A1 Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chaptr
Easily create chapter marks for audio productions on your iPhone or Apple Watch. Import audio files, add marks with simple clicks, and export them in various podcast-friendly formats. Adjust mark timing and listening speed for efficient workflow.
- Create chapter marks on iPhone and Apple Watch
- Import audio from cloud services or web
- Add marks with simple earbud clicks
- Edit mark timecodes
- Adjust playback speed
- Export to multiple podcast formats
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Create chapter marks for your audio production with your iPhone on the Go! Import your audio files from all document providing Apps like Dropbox or iCloud Drive or download them directly from the web. Add marks while listening: Click two or three times with your Apple EarPods to add marks while your iPhone is locked. You can also configure your AirPods to work with Chaptr. Chaptr is also available on your Apple Watch! Create marks from your wrist while you listen to your audio productions! Add edit marks at positions where your production needs improvement. Adjust the timecode of already created marks and move them to their exact position. Choose your favorite listening speed to work faster. Export the marks you created to * Podigee * mp4chaps file format (compatible with Reaper, Auphonic) * Reaper specific chapter marks file format (supports mark colors) * Podlove Simple Chapters Supported audio formats: MP3 und M4A
Metal Calculator A1 Pro
This app simplifies metal quantity calculations for various projects. It offers tools for calculating quantities, shapes, joints, and performing material tests. Supports both Imperial and Metric systems, with a wide range of metal types and converters.
- Quantity calculations for pipes, bars, sheets, and beams
- Shape customization for metal bars
- Detailed joint calculations (welded, bolted, riveted)
- Material testing (fatigue, bend, hardness, impact, tensile)
- Unit converters (length, volume, density)
- Support for various metal types and materials
- Detailed reporting and user-friendly interface
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Metal Calculator A1 Pro - the complete metal weight calculator, steel price calculator, fabrication estimator, and welding tool for steel, stainless steel, aluminium, copper, brass, and 100+ metals. Trusted by metal traders, scrap dealers, fabricators, welders, and civil & mechanical engineers to calculate metal weight, price, cutting waste, and fabrication quotes in seconds - no more weight tables or guesswork. --- CALCULATE WEIGHT OF ANY METAL SECTION --- - Round bar, square bar, hex bar, flat bar, angle, channel, I-beam, pipe, square & rectangular tube, sheet & plate - Dimensions in mm, cm, m, ft, in - including feet-inch fractions (like 5 ft 6 1/2 in) - Weight per piece, per metre, per foot & total (kg, t, lb) - Reverse calculation: enter target weight to get required length and pieces - Pipe schedules (Sch 40/80) & sheet gauge presets (SWG/BWG/MSG) --- INSTANT PRICE & TAX QUOTE --- - Live price calculation with your rate per kg - Regional tax presets (GST, VAT, sales tax) in your local currency - Save rate per material with auto-fill - Share formatted quotes on WhatsApp in one tap --- FABRICATION ESTIMATOR --- - 8 products: Gate, Grill, Railing, Fence, Staircase, Shed, Mezzanine, Shutter & Tank - Automatic cut list, weld length, paint area & labour hours - Member schedule with section sizes & PDF estimate sharing --- WELDING CALCULATOR --- - Electrode count, weld metal weight & welding cost - Fillet & groove weld calculations - Weld joint types with technical drawings & symbol guide --- SHEET METAL WORK --- - Flat pattern nesting optimizer to minimize scrap - Cone & elbow development with unfolded blank sizes - Bend allowance (K-factor) calculator for press brake - Template PDF export for workshop fabrication --- CUT OPTIMIZER --- - 1D cutting stock optimizer to minimize offcuts & scrap - Compare optimized vs. sequential cutting - Kerf width and stock length settings with PDF cut plan --- SURFACE TREATMENT --- - Paint area calculator for structural steel sections - Primer, enamel & epoxy coverage with coat count - Hot-dip galvanizing weight estimator --- QUOTATION & INVOICING --- - Professional quotations with client details & line items - Tax breakdown: GST (CGST+SGST/IGST), VAT, or sales tax - Discount, freight & transport charges - Branded PDF with logo, signature & total in words --- 5 ENGINEERING CONVERTERS --- - SWG / BWG / MSG gauge to mm thickness - Weight per length: kg/m to lb/ft - Stress: MPa to psi, ksi, kgf/cm2 - Hardness: Brinell (HB) to Rockwell (HRC) to Vickers (HV) - Grade cross-reference: IS E250 to ASTM A36 to EN S275 to JIS SS400 --- STUDY LIBRARY & CHECKLISTS --- - 30+ engineering guides: Steel grades, SS, Aluminium, Coatings, Welding defects, NDT, IS 800, AISC 360, EN 1993 & Safety - Interactive inspection checklists with YES / NO / N/A audit and color PDF report - 100% offline access - zero data required --- ACCURATE & COMPREHENSIVE --- - Verified densities for 100+ alloys (mild steel, SS 304/316, Al 6061, copper, brass, titanium) - Multi-item projects & material lists (BOQ) - Unit converter & scientific calculator included - 22 languages: English, Hindi, Spanish, Arabic, Portuguese, Russian, French, German, Italian, Turkish, Indonesian, Vietnamese, Thai, Urdu, Persian & Indian regional languages - Metric & imperial units, dark mode, 100% offline support --- PRO SUBSCRIPTION --- Core calculations are free. Upgrade to Pro for unlimited PDF estimates, quotations, projects (BOQ), and an ad-free experience. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Terms of Service: https://binaryandbricks.com/app/termsofservice.html Privacy Policy: https://binaryandbricks.com/app/appsprivacypolicy.html
Screenshots
Verdict
The clearest difference is price: Metal Calculator A1 Pro at Free against Chaptr's $2.99. Metal Calculator A1 Pro also leads on iOS requirement (15.0 vs 26.6). Chaptr's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 4). On rating, ratings volume, ads 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
Metal Calculator A1 Pro is free to download; Chaptr costs $2.99 up front. Metal Calculator A1 Pro sells 4 in-app purchases, starting at $1.99 per month. Chaptr asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for Chaptr against 4.6 for Metal Calculator A1 Pro. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews are what separate them: 100% of Chaptr's written reviews are positive against 60% of Metal Calculator A1 Pro's.
Chaptr ships an update every 6 weeks, Metal Calculator A1 Pro every 6 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Chaptr | Metal Calculator A1 Pro |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.5 (2 ratings) | 4.6 (5 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 60.0% of reviews |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 6 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Trauth | Binary And Bricks Pvt Ltd |
Customer experience
Chaptr
Metal Calculator A1 Pro
In-app purchases
Chaptr
No in-app purchases
Metal Calculator A1 Pro
- Metal Monthly Subscription$1.991 Month
- Metal Yearly Subscription$12.991 Year
- Pro Version$12.99
- Pro version$12.99
Questions
Is Chaptr free?
Is Metal Calculator A1 Pro free?
Which has better reviews, Chaptr or Metal Calculator A1 Pro?
Do Chaptr or Metal Calculator A1 Pro have ads?
Which is updated more often, Chaptr or Metal Calculator A1 Pro?
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