Comparison

Blitz Chess Clock vs PlantCalculator

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

Head to head
About

Blitz Chess Clock

This app provides a clean and intuitive interface for timing chess games. It caters to both casual players and serious competitors, offering a straightforward way to manage game durations.

Highlights
  • Simple chess clock interface
  • Beautiful design
  • Suitable for casual play
  • Supports competitive matches
  • Easy to use
Features
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A simple, beautiful chess clock. Whether you're a casual player who just wants a quick, timed game or a grand master who loves a good 30-minute Bronstein match, Blitz Chess Clock is hands-down the best chess clock on the App Store.

About

PlantCalculator

Features
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The nameplate reads "52.7 kg/cm²G." Your reference is in psi. The formula wants MPa. You can stop doing that conversion in your head. Plant Calculator brings together the calculations used every day in refinery and chemical plant equipment inspection — one app, built for the field. ■ Type the number on the nameplate, as-is Every input field has a unit selector. Enter kg/cm²G, psi or bar exactly as written, and the app does the conversion. If you think in kg/cm², set it as your default in Settings and every screen opens that way. 15 categories, 65 units. ■ Works where there's no signal Inside a vessel, inside a tank — every calculation runs entirely on your device. ■ Enter only what you already know - Pick a nominal size and schedule, and OD and wall are filled in (ASME/JIS, 45 sizes) - Pick a material and temperature, and the allowable stress is interpolated and filled in (9 materials) No more flipping through dimension tables. ■ Main features - Quick Check: from pipe and inspection data, review original wall, required thickness, corrosion rate, remaining life and thickness margin together - Required thickness: minimum wall for piping and pressure vessels under internal pressure (JIS B 8265 / High Pressure Gas (KHK), ASME Sec.VIII Div.1, ASME B31.3; cylinders, heads, straight pipe and elbows) - Corrosion rate & remaining life from previous/current thickness and elapsed years - Metal loss check: average, minimum and variation from readings, with simplified general and local metal-loss checks - Vertical tower check: internal pressure, dead weight, wind and seismic (static seismic coefficient method); checks tension and compression for operating and shutdown cases and shows a reference thickness. Skirt included - External pressure: simplified allowable external pressure check for cylinders - Nozzle reinforcement: area replacement method - Relief valve sizing: required orifice area based on API 520 - Piping: support span, pressure drop and velocity - Vessel: flange, bolt torque, flat plate, cone and support loads - Surface area: outer area of pipe, elbow, head and reducer; add count and insulation thickness for painting/cladding area and a material estimate - Tank / line totals: connect elements to sum area, volume and weight - Thermal expansion from temperature difference - Calculator + equation solver: scientific calculator (trigonometry, logs, powers, roots, memory, EE input, DEG/RAD) that also solves simultaneous equations in x, y and z - Unit conversion: 15 categories, including multiplication and division with units (e.g. 200 mm × 200 mm = 0.04 m²) - Size quick reference: NPS to OD, wall, ID, volume and pipe weight - Pipe dimension lookup: pick a size to see OD and wall per schedule (ASME B36.10M/B36.19M / JIS, physical dimension reference values) - Flange rating check: enter the rated pressure from your standard and compare with design pressure (ASME B16.5, etc.; rating table not bundled) - Material list: temperature-dependent allowable stress reference values (based on High Pressure Gas example standards) - Glossary for inspection and design terms - Calculation history: save, delete and copy as CSV - 8 languages (Japanese, English, Español, Português, 한국어, Deutsch, العربية, Русский), dark mode ■ Important This app is a supporting tool for design and inspection. Formulas are representative, and allowable stresses, dimensions and ratings are approximate reference values. Always verify against the official formulas and latest values of the applicable codes (JIS B 8265 / High Pressure Gas example standards / ASME Sec.II Part D / B16.5 / B36.10M, etc.) before making any decision. Do not rely on this app's results alone.

Screenshots

Blitz Chess Clock4 screens
PlantCalculator4 screens

Verdict

The call

The clearest difference is in-app purchases: PlantCalculator at none against Blitz Chess Clock's 1. Blitz Chess Clock's advantage is ads (none vs shown) and iOS requirement (7.0 vs 13.0). On price 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. Blitz Chess Clock sells 1 one-off in-app purchase. PlantCalculator asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Blitz Chess Clock versus PlantCalculator: the parameters behind the verdict, then further details
ParameterBlitz Chess ClockPlantCalculator
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequency—Every 9 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better13.0
Further details — not scored
Size1 MB25 MB
Age rating4+4+
DeveloperTrevor FountainRyo Iida

In-app purchases

1 purchases

Blitz Chess Clock

One-time1
  • Blitz Pro Upgrade$1.99
None

PlantCalculator

No in-app purchases

Questions

Is Blitz Chess Clock free?
Blitz Chess Clock is free to download, with in-app purchases available.
Is PlantCalculator free?
PlantCalculator is free to download, with no in-app purchases.
Do Blitz Chess Clock or PlantCalculator have ads?
PlantCalculator shows ads; Blitz Chess Clock does not.

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