Comparison

Fomcal vs CalMemo Stadio

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

CalMemo Stadio

Features
Read full description

【Calculate. Remember. Reuse. CalMemo does it all.】 "I wish I could redo that calculation." "Typing the same formula over and over is tedious." "I want to save my calculations with notes." CalMemo solves all of these problems. ---------------------------------------- ▼ What CalMemo Can Do ---------------------------------------- 【Auto-Save Calculation History】 Every calculation is automatically saved. Revisit past results, copy values, and continue where you left off. 【Formula Studio – Create Your Own Formulas】 Save your frequently used formulas and recall them with a single tap. Tax calculations, discounts, BMI, loan interest... build your own personalized calculator. 【Equation Solver】 Need to find the value of x? Just enter your equation and let CalMemo solve it. From linear equations to systems of equations, get instant answers. 【Structural Lab - Structural Calculation for Architecture & Civil Engineering】 Supports structural analysis of beams (horizontal) and columns (vertical). Considers not only concentrated and distributed loads but also the self-weight of members to instantly calculate and graph bending moments, shear forces, deflection, and more. Strongly supports everything from quick on-site checks to learning. 【Notes + Calculator in One】 Insert calculation results directly into your notes. Perfect for estimates, budgets, travel expense splits, and more. 【Unit & Currency Converter】 Convert length, weight, temperature, and currencies in real-time. Essential for international shopping and travel. 【Home Screen Widget】 Calculate without even opening the app. The fastest way to crunch numbers. ---------------------------------------- ▼ Perfect For ---------------------------------------- ・Anyone who wants to save calculation history ・Users who repeat the same calculations often ・Students and professionals solving equations ・People tired of switching between notes and calculator ・Anyone who wants instant calculations from Home Screen ---------------------------------------- ▼ CalMemo Premium ---------------------------------------- Unlock the full experience: ・Ad-free for distraction-free calculating ・Full access to Formula Studio & Equation Solver ・Calculator Widget for Home Screen ・Expanded keyboard customization slots ---------------------------------------- Calculating isn't just a task. With CalMemo, make it smarter. Make it yours. Download now and experience a new way to calculate. ---------------------------------------- Terms of Use: https://www.notion.so/Terms-of-Use-End-User-License-Agreement-2f45c1eb92a480069955e6d1b3adeb53?source=copy_link

Screenshots

Fomcal4 screens
CalMemo Stadio4 screens

Verdict

The call

The clearest difference is price: CalMemo Stadio at Free against Fomcal's $1.99. Fomcal's advantage is ads (none vs shown) and iOS requirement (12.0 vs 16.6). On update cadence, in-app purchases 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

CalMemo Stadio is free to download; Fomcal costs $1.99 up front. Fomcal sells 1 one-off in-app purchase and CalMemo Stadio sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fomcal ships an update every 3 months, CalMemo Stadio every 6 weeks. The most recent releases landed on October 13, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 5 level
Fomcal versus CalMemo Stadio: the parameters behind the verdict, then further details
ParameterFomcalCalMemo Stadio
Price$1.99Free — better
Positive reviews75.0% of reviews—
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.6
Further details — not scored
Size6 MB115 MB
Age rating4+4+
DeveloperNOBORU IMAIUdagagwa Rie

In-app purchases

1 purchases

Fomcal

One-time1
  • Enhancements$1.99
2 purchases

CalMemo Stadio

Subscriptions2
  • CalMemo Premium (Monthly)1 Month trial$2.991 Month
  • CalMemo Premium (Yearly)1 Month trial$14.991 Year

Questions

Is Fomcal free?
Fomcal costs $1.99, and also offers in-app purchases.
Is CalMemo Stadio free?
CalMemo Stadio is free to download, with in-app purchases available.
Do Fomcal or CalMemo Stadio have ads?
CalMemo Stadio shows ads; Fomcal does not.
Which is updated more often, Fomcal or CalMemo Stadio?
Fomcal ships an update every 3 months, and CalMemo Stadio every 6 weeks. Most recently, Fomcal was updated on October 13, 2026 and CalMemo Stadio on October 21, 2026.

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