Comparison

Airzone Pro Cloud vs Screw Size Drill Bit Chart

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

Head to head
About

Airzone Pro Cloud

Features
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Airzone Pro Cloud is the professional tool for air conditioning and heating installers, helping you work more independently, efficiently and productively every day. Everything you need for your installations, all in one platform: โ€ข Manage your installations and set up Airzone devices directly from your smartphone or tablet. โ€ข Access technical documentation and self-diagnostic tools, and get the technical support you need for every installation, always at hand. If you have any questions about the app, contact us.

About

Screw Size Drill Bit Chart

Features
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Which drill bit for a #8 screw in hardwood? ScrewGuide answers in two taps โ€” the complete screw, bolt and drill-bit chart with the exact pilot hole for the material in front of you, fully offline. Printed charts give you one number and hope you guessed the material right. ScrewGuide is material-aware: pick a screw, pick softwood, hardwood, MDF/chipboard, drywall, sheet metal or plastic, and it works out the pilot, clearance and countersink diameter for that exact combination โ€” then names the nearest real drill bit you actually own, in millimetres or inches. WHAT YOU GET - The right pilot hole every time, calculated per material, so boards stop splitting and screws stop stripping - 20 screw sizes cross-referenced: metric M2-M12, US gauge #4-#14 and tapered wood screws, with major and minor diameter, thread pitch, TPI, head diameter and typical lengths - A full 68-bit drill chart in one place: metric, fractional, number and letter bits with decimal and millimetre equivalents - Measured something and don't know what it is? Dial in a diameter and get the nearest screw and the nearest drill bit instantly - A metric tap-drill chart, so you can thread a hole without hunting a reference online - Head styles and drive types decoded โ€” Phillips, Pozidriv, Square/Robertson, Torx and hex โ€” plus why pilot holes work at all PERFECT FOR - Woodworkers and carpenters who refuse to split another board - DIYers assembling flat-pack, hanging shelves or mounting a TV - Makers and 3D-printing hobbyists living in M3 and M4 hardware - Trades and hobby mechanics switching between metric and imperial on the same job WHY NOT JUST GOOGLE IT? Because the garage has no signal, your hands are dirty and the search results argue with each other. ScrewGuide keeps every number on the device, opens instantly, and gives one clear answer per material instead of ten forum opinions. Save the sizes you use most and they are one tap away next time. PRIVACY No account, no sign-up, no ads, no tracking, no internet connection required. Your saved sizes and unit preference stay on your iPhone. FULL ACCESS Material-aware pilot, clearance and countersink sizing, the complete drill-bit chart, the tap-drill chart and the size finder unlock with full access. Choose a weekly or yearly subscription, or pay once for lifetime access โ€” one payment, no renewal. Ten common screw sizes stay browsable for free so you can try the reference first. Open ScrewGuide before the drill comes out and get the hole right the first time. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

Screenshots

Airzone Pro Cloud4 screens
Screw Size Drill Bit Chart4 screens

Verdict

The call

The clearest difference is in-app purchases: Airzone Pro Cloud at none against Screw Size Drill Bit Chart's 3. Airzone Pro Cloud also leads on update cadence (every 2 weeks vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Screw Size Drill Bit Chart sells 3 in-app purchases, starting at $2.99 per 7 days. Airzone Pro Cloud asks for nothing beyond the download.

UpkeepUpdate frequency

Airzone Pro Cloud ships an update every 2 weeks, Screw Size Drill Bit Chart monthly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

Scorecard4 real differences ยท 2 level
Airzone Pro Cloud versus Screw Size Drill Bit Chart: the parameters behind the verdict, then further details
ParameterAirzone Pro CloudScrew Size Drill Bit Chart
PriceFreeFree
Update frequencyEvery 2 weeks โ€” betterMonthly
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.5 โ€” better17.0
Further details โ€” not scored
Size48 MB23 MB
Age rating4+4+
DeveloperCorporacion Empresarial Altra SLPhuc Pham

In-app purchases

None

Airzone Pro Cloud

No in-app purchases

3 purchases

Screw Size Drill Bit Chart

Subscriptions2
  • Countersink Pro, Weekly$2.997 Days
  • Thread Finder, Yearly$14.991 Year
One-time1
  • Full Fastener Guide, One-Time$29.99

Questions

Is Airzone Pro Cloud free?
Airzone Pro Cloud is free to download, with no in-app purchases.
Is Screw Size Drill Bit Chart free?
Screw Size Drill Bit Chart is free to download, with in-app purchases available.
Do Airzone Pro Cloud or Screw Size Drill Bit Chart have ads?
Neither Airzone Pro Cloud nor Screw Size Drill Bit Chart shows ads.
Which is updated more often, Airzone Pro Cloud or Screw Size Drill Bit Chart?
Airzone Pro Cloud ships an update every 2 weeks, and Screw Size Drill Bit Chart monthly. Most recently, Airzone Pro Cloud was updated on October 10, 2026 and Screw Size Drill Bit Chart on October 6, 2026.

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