Comparison

Archium vs Psychro Calc Pro

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

Head to head
About

Archium

Effortlessly scan, organize, and manage your documents with intelligent analysis and automatic filing. Quickly find what you need with powerful search and Siri integration. Streamline workflows using app shortcuts and automation.

Highlights
  • Scan and import documents
  • Automatic document organization
  • Intelligent search and indexing
  • Siri integration for context-aware questions
  • App Intents & Shortcuts for automation
  • Secure on-device storage
Features
Read full description

Archium: scan, organize & manage your documents. • Capture and manage everything effortlessly Import, scan, search, and share documents in seconds; all securely stored on your device. • Stay organized without the work Create smart Collections and let Archium automatically file documents where they belong. • Let automation do the busywork Use App Intents & Shortcuts to import attachments, sort documents, and streamline your workflows automatically. • Find what you need, instantly Intelligent analysis and indexing make every document easy to retrieve. • Ask questions, get answers, right in context Use Siri to ask about the document you’re viewing without leaving the app. • Search once, find everything Instantly search across all documents with powerful in-app search and full Spotlight support.

About

Psychro Calc Pro

Features
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Psychro Calc Pro is a psychrometric calculator for HVAC engineers and technicians. Calculate dry bulb, wet bulb, dew point, relative humidity, humidity ratio, enthalpy and air density from any two independent properties, at altitudes from −500 m to 11 000 m. CALCULATION ENGINE Saturation pressure over water and ice from the Hyland–Wexler equations (ASHRAE Handbook—Fundamentals, Ch. 1), Greenspan (1976) enhancement factor, and the ASHRAE wet bulb equation. Valid from −100 °C to +200 °C. PSYCHROMETRIC CHART IN PDF REPORTS Relative humidity, enthalpy, wet bulb and specific volume lines, with automatic Standard, Low Temp and Industrial Drying modes. REPORTS & HISTORY SI and IP (Imperial) units throughout — results, chart, PDF reports and history — plus your company logo on PDF reports. FREE TRIAL, ONE-TIME PURCHASE Free to download. Try every feature free for 3 days — no payment, no sign-up. After the trial, unlock everything with a one-time purchase. No subscription, no recurring fees. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://iklimet-lab.com/privacy-policy/

Screenshots

Archium4 screens
Psychro Calc Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Archium at none against Psychro Calc Pro's 2. Psychro Calc Pro's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.0 vs 18.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Psychro Calc Pro sells 2 in-app purchases, starting at $3.99 per month. Archium asks for nothing beyond the download.

UpkeepUpdate frequency

Archium ships an update every 3 weeks, Psychro Calc Pro every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Archium versus Psychro Calc Pro: the parameters behind the verdict, then further details
ParameterArchiumPsychro Calc Pro
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size21 MB23 MB
Age rating4+4+
DeveloperDaniel BazzaniMehmet Karakas

In-app purchases

None

Archium

No in-app purchases

2 purchases

Psychro Calc Pro

Subscriptions1
  • Monthly Premium3 Days trial$3.991 Month
One-time1
  • Lifetime Premium$9.99

Questions

Is Archium free?
Archium is free to download, with no in-app purchases.
Is Psychro Calc Pro free?
Psychro Calc Pro is free to download, with in-app purchases available.
Do Archium or Psychro Calc Pro have ads?
Neither Archium nor Psychro Calc Pro shows ads.
Which is updated more often, Archium or Psychro Calc Pro?
Archium ships an update every 3 weeks, and Psychro Calc Pro every 4 days. Most recently, Archium was updated on November 3, 2026 and Psychro Calc Pro on October 31, 2026.

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