Comparison

iCircuit vs Day Progress Time

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

Head to head
About

iCircuit

Design and simulate analog and digital electronic circuits in real-time. This app offers a comprehensive component library, built-in test equipment, and the ability to create custom elements. It's ideal for learning, prototyping, and validating designs without physical components.

Highlights
  • Real-time circuit simulation
  • Extensive component library (300+)
  • Built-in test equipment (multimeter, oscilloscope)
  • Programmable Arduino and PIC microcontroller support
  • Custom element creation and sharing
  • Audio simulation
Features
Read full description

iCircuit is the premier iPhone and iPad app for designing, simulating, and learning analog and digital electronics. Its advanced simulation engine provides real-time, always-on analysis so your circuits stay powered and live, just like working with real components. Use it like a CAD tool: add components, wire them up, and set their properties. But iCircuit is unlike typical CAD apps because it is always simulating. You do not stop to take a measurement or spend time configuring reports. Instead, you just play with the circuit as you normally would, with the power on. Build circuits with over 300 components, from simple resistors and LEDs to programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32), PIC microcontrollers, and 60 4000/7400-series digital ICs (more available with Pro). Connect elements, adjust values, and instantly see the results. BUILT-IN TEST EQUIPMENT • Multimeter: Probe any point to read voltage, current, and power • Oscilloscope: Track multiple signals with touch-controlled time scale, stacked/unstacked views, FFT analysis, and Bode plots • Gauges: Visualize voltages, currents, and frequencies directly in your circuit • Signal generators and configurable sources EXTENSIVE COMPONENT LIBRARY • Programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32) • Programmable PIC microcontrollers (assembly and HEX files, more available with Pro) • Power: Voltage regulators (78xx, LM317), sources, dependent sources, power jacks, and simulated antennas • Analog: Resistors, capacitors, inductors, diodes, BJTs, MOSFETs, thermistors, triodes, and tetrodes • Digital: Logic gates (AND, OR, NAND, NOR, XOR), JK and D flip-flops, and 60 4000/7400-series ICs (180+ available with Pro) • ADCs and DACs • Sensors and displays: LEDs, 7-segment, NeoPixels, matrix displays, thermistors • Electromechanical: Motors, servos, SPST/SPDT and DPST/DPDT switches, push buttons, relays, and speakers CREATE CUSTOM ELEMENTS Build sub-circuits and custom elements to componentize your designs and create reusable modules. Share your custom elements with others via the iCircuit Gallery. AUDIO SIMULATION Hear your circuits. Speakers, buzzers, and microphones produce real audio output. Perfect for students learning electronics, hobbyists prototyping projects, and engineers validating designs, all without burning out a single component. ABOUT ICIRCUIT PRO (OPTIONAL) iCircuit is a complete app with a one-time purchase. iCircuit Pro is optional and adds extra components (including more PICs and a larger 4000/7400 IC library) and helps fund ongoing development. Pro is not required for core simulation or everyday circuit design. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Day Progress Time

Features
Read full description

Define time blocks for work, meals, relaxation, or anything else, and watch your progress come to life through elegant, customizable widgets on your lock or home screen. Create your own rhythm with flexible scheduling and visual feedback designed to keep you aware, balanced, and on track. Key Features: • Create daily or recurring time blocks for any activity • Automatically track your current time block based on day and time • Choose between circular or linear progress indicators • Customize text, colors, backgrounds, and widget layouts • Display elapsed or remaining time with optional messages • Works beautifully on lock and home screens, with all widget sizes supported • Preloaded examples to help you get started instantly • Cloudkit sync accross all your devices Day Progress combines structure with design freedom — making time management not just useful, but visually satisfying.

Screenshots

iCircuit4 screens
Day Progress Time4 screens

Verdict

The call

The clearest difference is price: Day Progress Time at $3.99 against iCircuit's $12.99. Day Progress Time also leads on in-app purchases (none vs 2) and update cadence (daily vs every 3 weeks). iCircuit's advantage is iOS requirement (12.2 vs 18.6). On ads, chart position 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

iCircuit costs $12.99 and Day Progress Time $3.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. Day Progress Time asks for nothing beyond the download.

UpkeepUpdate frequency

iCircuit ships an update every 3 weeks, Day Progress Time daily. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

Scorecard4 real differences · 7 level
iCircuit versus Day Progress Time: the parameters behind the verdict, then further details
ParameteriCircuitDay Progress Time
Price$12.99$3.99 — better
Rating3.8 (134 ratings) — better—
Positive reviews61.1% of reviews—
Number of ratings134 — better—
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
Best chart rank#148 — better#192
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.2 — better18.6
Further details — not scored
Size126 MB9 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.Pierre Stanislas

Bugs and requests

iCircuit

Reported bugs

4 issues
  • Oscilloscope and meter functions not working properly
  • Saving and loading circuits can be unreliable
  • Inconsistent behavior when rotating/flipping components
  • Crashes when working with larger or more complex circuits

Requested features

5 requests
  • More components (e.g. transformers, triodes, MOSFETs)
  • Ability to create custom components
  • Frequency domain analysis (Bode plots, FFT)
  • Improved wiring and component placement controls
  • Better support for AC circuits and motors

Day Progress Time

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

iCircuit

Subscriptions2
  • iCircuit Pro (Monthly)$1.991 Month
  • iCircuit Pro (Yearly)$14.991 Year
None

Day Progress Time

No in-app purchases

Questions

Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Is Day Progress Time free?
Day Progress Time costs $3.99, with no in-app purchases.
Do iCircuit or Day Progress Time have ads?
Neither iCircuit nor Day Progress Time shows ads.
Which is updated more often, iCircuit or Day Progress Time?
iCircuit ships an update every 3 weeks, and Day Progress Time daily. Most recently, iCircuit was updated on September 24, 2026 and Day Progress Time on September 8, 2026.
Which is more popular, iCircuit or Day Progress Time?
iCircuit currently peaks at #148 in the App Store charts, and Day Progress Time at #192. Chart position reflects recent download velocity rather than total install base.

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