Comparison

STORADIO vs Graph Calc Plus

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

Head to head
About

STORADIO

This application provides pilots and dispatchers with essential information to find the correct frequency for reaching STORADIO. It offers up-to-date propagation charts and tactical assistance, with online updates ensuring the latest data is available before going offline.

Highlights
  • Frequency finder for STORADIO
  • Up-to-date propagation charts
  • Tactical assistance
  • Online information updates
  • Designed for pilots and dispatchers
Features
Read full description

STORADIO HF RADIO app is maninly designed for pilots and dispatchers. It will help you bring information “up in the air” in order to easier find the right frequency to reach STORADIO. When the app is online it will update with latest information, such as the various Propagation charts; Make sure to update before you go offline. In the app you will also find tactical help.

About

Graph Calc Plus

Features
Read full description

Graph Calculator define the graph of [f] to be the graph of the equation y = f(x). So, the graph of a function if a special case of the graph of an equation. Features: ∙ Set individual line color. ∙ Show/Hide individual mathematical expression. ∙ Pinch to Zoom in/out Graph View. ∙ Pan to reposition Graph View. ∙ Add up to 22 mathematical expressions. ∙ Full screen preview. Graph Features: ∙ Custom background color for Graph. ∙ Custom grid color for Graph. ∙ Show/Hide Grid Lines/Minor Grid Lines. ∙ Show/Hide Axis Number. ∙ Show/Hide X-Axis. ∙ Show/Hide Y-Axis. ∙ Set Graph Line Width range from 0.5~5.0. Some of the most commonly used functions: y = mx + b y = x**2 [x²] y = x**3 [x³] y = sqrt(x) [√x] y = ln(x) y = log(x) y = sin(x) y = cos(x) y = tan(x) Standard Operators: + - addition and unary positive - - subtraction and negation * - multiplication / - division ! - factorial ** - pow, exponentiation sqrt(x) - square root cuberoot(x) - cubic root Standard parameters (constant): phi - returns the value of ϕ (the Golden Ratio). Also recognized as ϕ() pi - returns the value of π. Also recognized as π() pi_2 - returns the value of π/2 pi_4 - returns the value of π/4 tau - returns the value of τ. Also recognized as τ() sqrt2 - returns the value of the square root of 2 e - returns the value of e log2e - returns the value of the log base 2 of e log10e - returns the value of the log base 10 of e ln2 - returns the value of the log base e of 2 ln10 - returns the value of the log base e of 10 Standard Functions that take 1 parameter: sqrt() - returns the square root of the passed parameter log() - returns the base 10 log of the passed parameter ln() - returns the base e log of the passed parameter log2() - returns the base 2 log of the passed parameter ceil() - returns the passed parameter rounded up floor() - returns the passed parameter rounded down Trigonometric functions: sin(), cos(), tan() Their inverses (asin, acos, atan, atan2) Their reciprocals (csc, sec, cotan) The reciprocals of the inverses (acsc, asec, acotan) The hyperbolic variations of all the above functions (sinh, cosh, tanh, asinh, acosh, atanh, csch, sech, cotanh, acsch, asech, acotanh) The versine functions (versin, vercosin, coversin, covercosin, haversin, havercosin, hacoversin, hacovercosin, exsec, excsc, crd) dtor() - converts the passed parameter from degrees to radians rtod() - converts the passed parameter from radians to degrees Quick Start: 1. Tap on [+] button. 2. Change the equation of the line to y=3x+1 and see graphed. 3. You can also enter equations that are not solved for x e.g. x=2y+2 About Graph Calculator In mathematics, the graph of a function f is the set of ordered pairs (x,y), where f(x)=y. In the common case where x and f(x) are real numbers, these pairs are Cartesian coordinates of points in two-dimensional space and thus form a subset of this plane. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

STORADIO4 screens
Graph Calc Plus4 screens

Verdict

The call

The clearest difference is price: STORADIO at Free against Graph Calc Plus's $2.99. On update cadence, ads, 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

STORADIO is free to download; Graph Calc Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

STORADIO ships an update every 43 months, Graph Calc Plus every 39 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
STORADIO versus Graph Calc Plus: the parameters behind the verdict, then further details
ParameterSTORADIOGraph Calc Plus
PriceFree — better$2.99
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 43 monthsEvery 39 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.114.0 — better
Further details — not scored
Size23 MB1 MB
Age rating4+4+
DeveloperSTORADIO AERO ABHeng Jia Liang

In-app purchases

None

STORADIO

No in-app purchases

None

Graph Calc Plus

No in-app purchases

Questions

Is STORADIO free?
STORADIO is free to download, with no in-app purchases.
Is Graph Calc Plus free?
Graph Calc Plus costs $2.99, with no in-app purchases.
Do STORADIO or Graph Calc Plus have ads?
Neither STORADIO nor Graph Calc Plus shows ads.
Which is updated more often, STORADIO or Graph Calc Plus?
STORADIO ships an update every 43 months, and Graph Calc Plus every 39 months. Most recently, STORADIO was updated on October 3, 2026 and Graph Calc Plus on October 7, 2026.

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