Comparison

iformula pro vs Circuit

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

Head to head
About

iformula pro

This comprehensive math learning platform offers over 4000 equations and functions across various advanced topics. It features a powerful search, a scientific calculator, note-taking, and bookmarking capabilities to aid academic study and professional reference.

Highlights
  • Over 4000 math equations
  • Full-featured equation search
  • New scientific calculator
  • Notes system
  • Bookmarking for favorite equations
  • Dual language support (English & German)
Features
Read full description

iformula pro is much more than a simple math equation library app like other apps, it is a math productive learning platform and has become a standard for higher math education at schools and universities ! iformula pro was specially developed for academic students, engineers, high school students, math course students and for math home schooling and distance learning, as well as a refresher for scientist with higher mathematics skills and all people, who are interested in math. Failing an exam or can't go on with your calculations, because not knowing an equation, belong to the past ! iformula pro app includes the following functions: ► Math equation topics, more than 4000 of math equations included: * Areas, Planes * Analysis * Binomials * Bodies * Complex Numbers * Constants * Derive * Differential Equation * Fractions * Geometric Constructions * Geometry * Graphic Functions * Greek Alphabet * Integration * Logarithm * La Place * Power * Probability * Quadratic Equations * Roots * Series, Sequences * Trigonometry * Units * Statistical distributions * Distribution tables * and much more ► App functions: * Full featured equation and math topics search functionality (search for thousands of math topics) * New Scientific calculator (re-engineered) * Notes system for important equation notes * Bookmarking system for your favorite equations ! * Full app dual language support: English & German * Search for all topics and categories All math formulas and functions are included in the app no, need to download anything ! There is no need of carrying around heavy paper mathematics library books anymore - iformula is your right choice ! This app does not include any annoying advertisement !! That powerful validation, and our reputation for safety, durability, reliability, and ease of use, has also driven our consumer dedication further than ever anticipated. Moving forward, our commitment to "Perfection" remains steadfast: We will never compromise quality. We will continue to invest tremendous resources in the technology and talent necessary to improve our products wherever possible; and we will always strive to deliver maximum customer satisfaction! Exclusion of liability ! Exclusion of warranty and guarantee !

About

Circuit

Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, resistor calculations, and network conversions. Learn simplification steps graphically and study key electrical laws.

Highlights
  • Design and analyze electrical circuits
  • Solve resistor, capacitor, and inductor networks
  • Simplify complex circuit diagrams step-by-step
  • Convert between delta and wye networks
  • Convert between current and voltage sources
  • Design or find resistor values
  • Study electrical laws and formulas
Features
Read full description

The CircuitDesign is a feature rich app designed by an engineer. This app allows the creative smart people like you to design, draw, analyse, simplify and solve electrical circuits. You can design, draw, solve and simplify resistor-network, solve capacitor-network, solve inductor-circuit. You can design, draw, solve and simplify parallell circuit diagrams, series circuit diagrams, delta/wye circuit diagrams and any combinations of these. You can convert delta to wye and wye - delta network You can convert current source to voltage source or voltage source to current source You can design your own resistor (3,4,5 or 6 band resistor) or find the value for existing resistor You can even share your creativity with other people. Save the diagram locally. Do you have a complex network involving any combinations of parallell network, series network, delta/wye network? Fantastic. You can simplify this network and see how its done step by step so you can learn how to simplify networks. You can go back all the way to original network to see how the simplification was done. Simply stated, view simplification steps graphically. Keeps the historical diagram so that you can go back and verify each step. You can also share the simplification steps or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort of drawing diagrams and simplifying/solving it will not be lost. Are you a high school student learning electricity? This is the app for you. Are you a university student learning electrical engineering? This is the app for you. There is also a page to help you study. This study tab teaches you some very important laws of electricity and important formula. Like Ohm, law, Kirchhoff's volgate law, Kirchhoff's current law, There is also a page to help you learn now to use this app. This is a perfect app for a creative smart individual like you. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Screenshots

iformula pro4 screens
Circuit4 screens

Verdict

The call

The clearest difference is review sentiment: iformula pro at 56% against Circuit's 0%. iformula pro also leads on price ($2.99 vs $5.99). Circuit's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 4 months). On ads, monetization model 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

iformula pro costs $2.99 and Circuit $5.99 up front. iformula pro sells 1 one-off in-app purchase. Circuit asks for nothing beyond the download.

UpkeepUpdate frequency

iformula pro ships an update every 4 months, Circuit every 5 weeks. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

Scorecard5 real differences · 5 level
iformula pro versus Circuit: the parameters behind the verdict, then further details
Parameteriformula proCircuit
Price$2.99 — better$5.99
Rating3.0 (2 ratings) — better—
Positive reviews55.6% of reviews — better0.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size88 MB31 MB
Age rating17+4+
DeveloperTobias WernerOm Prakash Chapagain

Customer experience

iformula pro

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews18 reviews
Positive55.6%
Neutral11.1%
Negative33.3%

Circuit

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

iformula pro

One-time1
  • draw function graph$0.99
None

Circuit

No in-app purchases

Questions

Is iformula pro free?
iformula pro costs $2.99, and also offers in-app purchases.
Is Circuit free?
Circuit costs $5.99, with no in-app purchases.
Do iformula pro or Circuit have ads?
Neither iformula pro nor Circuit shows ads.
Which is updated more often, iformula pro or Circuit?
iformula pro ships an update every 4 months, and Circuit every 5 weeks. Most recently, iformula pro was updated on September 11, 2026 and Circuit on September 8, 2026.

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