Comparison

Mastowatch vs Process Engineer Calc

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

Head to head
About

Mastowatch

Discover and explore Mastodon servers with this utility app. Get detailed statistics, view trending content, and check server rules and limitations without needing to log in.

Highlights
  • Find Mastodon servers
  • Inspect server details
  • View user and post counts
  • See trending links and posts
  • Check blocked domains
  • Discover custom emoji
  • Review server rules
Features
Read full description

Hi! I’m Mastowatch and I can help you find and inspect Mastodon servers. Whether you're new to Mastodon and just need help finding the perfect instance or you want to look up details and statistics about your favorites, Mastowatch can help you find anything you might need to know about a particular Mastodon server without ever logging in! Features: * User and post counts * Trending links and posts * Blocked domains * Custom emoji * Rules * Supported languages * Supported upload types and sizes * Character limits * And more! Let Mastowatch help you find your home on Mastodon, the decentralized social network of the future with no ads and no tracking!

About

Process Engineer Calc

Features
Read full description

ProcessCalc is an ad-free, offline-ready utility app designed specifically for chemical engineers, extraction technicians, and laboratory researchers. Whether you are scaling up a synthesis from bench to pilot scale, optimizing solvent recovery, or sizing a chiller for your jacketed reactor, this app provides 10 specialized engineering calculators to streamline your daily workflow. Key Calculators Included: • Solvent Recovery: Estimate evaporation rates and recovery times. • Chiller Sizing: Calculate required cooling capacity (kW) and tonnage. • Biomass Capacity & Yield: Optimize loading and predict expected yields. • Scale-up Predictor: Lab to production volume and flow rate scaling. • Condenser Area: Determine required heat transfer area. • Vapor Velocity: Avoid flooding in vacuum systems with min-ID calculations. • Pump Flow Rate: Quick displacement to LPM/LPH conversions. • Scaling Risk Predictor: Assess system scaling and maintenance needs. • Vacuum Diagnostic: Calculate rate-of-rise and system leak rates. • Compliance Map: Quick reference for global hemp/CBD regulations. App Features: Zero Ads: No pop-ups, no tracking, no subscriptions. Offline First: Works instantly in the lab or extraction facility where internet might be spotty. Favorites: Star your most-used tools for one-tap access. Practical: Built around real-world formulas used in extraction and chemical processing facilities. Designed by engineers, for engineers.

Screenshots

Mastowatch4 screens
Process Engineer Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Process Engineer Calc at none against Mastowatch's 4. Process Engineer Calc also leads on update cadence (every 10 days vs monthly) and iOS requirement (17.0 vs 26.0). Mastowatch's advantage is device support (3 vs 1). On price and ads 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. Mastowatch sells 4 one-off in-app purchases. Process Engineer Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Mastowatch ships an update monthly, Process Engineer Calc every 10 days. The most recent releases landed on June 1, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 6 level
Mastowatch versus Process Engineer Calc: the parameters behind the verdict, then further details
ParameterMastowatchProcess Engineer Calc
PriceFreeFree
Rating4.8 (16 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings16 — better—
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size40 MB11 MB
Age rating17+4+
DeveloperJustin Ferrell冯泰 蔡

In-app purchases

4 purchases

Mastowatch

One-time4
  • Small Tip$0.99
  • Mastowatch Pro$3.99
  • Medium tip$4.99
Show 1 more
  • Large Tip$9.99
None

Process Engineer Calc

No in-app purchases

Questions

Is Mastowatch free?
Mastowatch is free to download, with in-app purchases available.
Is Process Engineer Calc free?
Process Engineer Calc is free to download, with no in-app purchases.
Do Mastowatch or Process Engineer Calc have ads?
Neither Mastowatch nor Process Engineer Calc shows ads.
Which is updated more often, Mastowatch or Process Engineer Calc?
Mastowatch ships an update monthly, and Process Engineer Calc every 10 days. Most recently, Mastowatch was updated on June 1, 2026 and Process Engineer Calc on September 12, 2026.

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