Function Calc vs Circuit Planner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Function Calc
This app offers a powerful, programmable scientific calculator with graphing capabilities. It allows users to create custom functions, store equations, and perform complex calculations with ease. The interface features a visible tape display and supports dictation for statistical analysis.
- Programmable custom functions
- Graphing capabilities
- Tape display with edit/undo
- Unit conversions (120+)
- Dictate calculations
- Export graphs (PDF, PNG)
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A full-function, programmable, graphing scientific calculator designed to be very quick and easy to use, but with the added power of customisation. Tape display is visible while you type, and a swipe away from full screen view. Select and directly input any number from tape, undo or edit calculations. Easily create and use custom functions, store equations and useful numbers, use complex functions with multiple variables - fully programmable. Plot functions on a zoomable graph, export a high-resolution pdf copy. Dictate calculations and numbers for statistical analysis, with instant results. Completely free. • no adverts, no in-app purchases. • full set of scientific functions, unlimited nested brackets. • swipe to undo, step by step. • easily edit calculations and re-calculate. • optionally enter and edit calculations in standard maths format, rather than calculator order. • visible memory store. • tape output shows all calculations – swipe for full screen. • never type the same number twice – direct input from tape. • instantly convert between more than 120 different units. • zoomable text for easy reading and editing. • fully editable useful numbers page – store constants, conversion factors, commonly used numbers, tappable URLs or email addresses, or any text. • create, store and use functions for unit conversions or calculations, as simple as copy and paste. • dictate calculations, or lists of numbers for statistical analysis, get instant results. • create, edit and use complex functions with up to ten inputs or outputs – solve quadratic and cubic equations, calculate mortgage payments, compound interest, body mass index, triangles, the day of the week for any date, sunrise and sunset times and direction for any date and place, statistics (including normal, Student's T, Chi Square and F cumulative probability functions) and more – create or keep exactly what is useful, edit or delete what isn’t. 50 functions included. • fully zoomable graphing capability, plot one or two functions on a graph. Export PNG or high-resolution large pdf copies. • ideal for complex or repetitive tasks – custom functions reduce errors. • full help included.
Circuit Planner
Design professional IEC circuit diagrams with a user-friendly interface. Access a vast library of symbols, utilize automatic connection features, and export your plans in PDF format. Ideal for electrical engineering projects.
- User-friendly interface for circuit diagram creation
- 1056 integrated IEC circuit diagram symbols
- Automatic connection system for precise wiring
- Export diagrams in PDF format
- Supports A4, A3, A2 formats with up to 20 drawing sheets
- Automatic backup of project data
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Circuit Planner is the intuitive and creative App to design IEC circuit diagrams for electrical engineering: • Uncomplicated handling and fast results close the gap between conventional drawing programs and complex CAD applications. • Numerous circuit diagram symbols, divided into categories, cover a wide range of applications in absolutely high-quality visualization. • All planning results can be exported in pdf format and printed out if required. The features in detail: • User-friendly, uncomplicated application for creating circuit diagrams for electrical engineering • 1070 integrated objects such as IEC circuit diagram symbols, text fields and geometries • Detailed IEC circuit diagram symbols, stored in categories, such as batteries, brakes, capacitors, conductors/cables, connections/terminals, control technology, converters, cross-references, devices, digital technology, fuses, generators, inductors, installation plans, integrated circuits / ICs, light sources, measuring instruments, motors, optical fibre cables, overvoltage protection, photovoltaic, plugs/sockets, protective devices, relays/contactors, reporting/signal devices, resistors, semiconductors, starters, switches/contacts, terminal strips, transformers and voltage sources • Reliable snap function for precise arrangement of objects on the drawing sheet • The automatic connection system ensures the correct electrical connection to immediately adjacent circuit diagram symbols at the starting point and end point of conductors • Automatically updated cross-references • Circuit diagrams in A4, A3 and A2 formats, each in landscape or portrait format with up to 20 drawing sheets • Drawing sheets with title block in two sizes for project details, date and name • Drawing sheets with column and row labelling and optional drawing grid • Print and export function for the circuit diagram in pdf format • Export and import options for scpData - project files • Clear and understandable explanations on how to use • Demo projects from the fields of energy technology, control technology and electronics • Save, load and sort function for project files • Automatic backup of project data when closing the application • App language: English and German Circuit Planner - A professional tool without annoying adverts, requires no internet connection and no in-app purchases.
Screenshots
Verdict
The clearest difference is price: Function Calc at Free against Circuit Planner's $2.99. Function Calc also leads on review sentiment (80% vs 60%). Circuit Planner's advantage is chart position (#187 vs unranked) and device support (3 vs 1). On update cadence, ads and in-app purchases 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
Function Calc is free to download; Circuit Planner costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Function Calc ships an update monthly, Circuit Planner every 2 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.
| Parameter | Function Calc | Circuit Planner |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 80.0% of reviews — better | 60.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #187 — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15 — better |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Hugh Pelham | Axel Hauschild |
Customer experience
Function Calc
Circuit Planner
In-app purchases
Function Calc
No in-app purchases
Circuit Planner
No in-app purchases
Questions
Is Function Calc free?
Is Circuit Planner free?
Do Function Calc or Circuit Planner have ads?
Which is updated more often, Function Calc or Circuit Planner?
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