Comparison

Fomcal vs Info Marina

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

Head to head
About

Fomcal

This app allows you to create and save custom calculation formulas for daily use. It supports complex functions, logical operations, and parameter studies, with options to export results as CSV. An optional numeric pad enhances input efficiency.

Highlights
  • Save and reuse custom formulas
  • Support for logical and comparison functions
  • Parameter study for variable analysis
  • Export results as CSV
  • Optional enhanced numeric pad
  • Extended syntax for branching and iteration
Features
Read full description

Fomcal is a calculator to calculate quickly with formula inputted already. Since you can register formulas used in daily routine by yourself, there is no need to search or to develop the dedicated calc app. Moreover, Fomcal can be also available as a general function calculator pad (option). Registered formula can be utilized as a function in the other formula or on the calcpad. And constants or variables can be used in these. Fomcal can show descriptions and a figure, about formulas and variables. In addition to the numeric functions such as trigonometric functions, you can also use the logical or comparison functions. By describing separated multiple of a formula with a semicolon';', you will be able to calculate these at the same time. Temporary variables are available in formula definition as followings. exp) x=1;x+2 result) 3 You can try a parameter study with specifying an initial value, a incrementation and a repeat number. The result can be exported as CSV data. Following formulas are preset as samples. ・Hypotenuse of Right Triangle - Geometry ・Cross-sectional Performance of Rectangle - Mechanics of materials ・Roots of quadratic equation - Mathematics ・Compound interest calculation - Business ・Number of years to become N times with compound interest calculation After purchase of "Enhancements (former Restriction Release)" with In-App purchase, you will be able to following functions. ・Export/import of formula data. ・A special numeric pad will be utilized for efficient inputting. ・Function calculator pad. ・Parameter study. From Ver.3.3, "Extended Syntax" feature is available. With $IF, $FOR, $WHILE or etc., branch or iterative operation is easily specified.

About

Info Marina

Read full description

Info Marina is a ticker-type RSS reader with contents viewer. You can enjoy laying out your RSS collection like a newspaper. It supports effective skimming and scanning of information you need. You can feel free to cherry-pick articles without fear of stacks of UNREADs. --- YOUR INFORMATION MAP - Easily organize RSS feeds layout by drag and drop. - Quickly add RSS feed by drag and drop URL. EFFECTIVE SKIMMING AND SCANNING - RSS feeds keep updating at same location in lists, which helps effective skimming. - Web viewer includes built-in ad-blocker. - Web search by multiple search engines. SYNC EVERYWHERE - iCloud sync enables keeping up-to-date on all your devices. - macOS version is confortable with large screen, and iOS version is more portable.

Screenshots

Fomcal4 screens
Info Marina2 screens

Verdict

The call

The clearest difference is price: Info Marina at Free against Fomcal's $1.99. Info Marina also leads on in-app purchases (none vs 1). Fomcal's advantage is update cadence (every 3 months vs every 8 months) and iOS requirement (12.0 vs 15.0). On 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

Info Marina is free to download; Fomcal costs $1.99 up front. Fomcal sells 1 one-off in-app purchase. Info Marina asks for nothing beyond the download.

UpkeepUpdate frequency

Fomcal ships an update every 3 months, Info Marina every 8 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 4 level
Fomcal versus Info Marina: the parameters behind the verdict, then further details
ParameterFomcalInfo Marina
Price$1.99Free — better
Positive reviews75.0% of reviews—
Update frequencyEvery 3 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better15.0
Further details — not scored
Size6 MB5 MB
Age rating4+17+
DeveloperNOBORU IMAIKiyoaki Kato

In-app purchases

1 purchases

Fomcal

One-time1
  • Enhancements$1.99
None

Info Marina

No in-app purchases

Questions

Is Fomcal free?
Fomcal costs $1.99, and also offers in-app purchases.
Is Info Marina free?
Info Marina is free to download, with no in-app purchases.
Do Fomcal or Info Marina have ads?
Neither Fomcal nor Info Marina shows ads.
Which is updated more often, Fomcal or Info Marina?
Fomcal ships an update every 3 months, and Info Marina every 8 months. Most recently, Fomcal was updated on October 13, 2026 and Info Marina on October 3, 2026.

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