Comparison

Voltage Regulator vs iRobbie

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

Head to head
About

Voltage Regulator

Calculate resistor combinations for adjustable voltage regulators. This tool helps electronics hobbyists and professionals determine desired output voltages and resistor values. Results can be exported and shared easily.

Highlights
  • Adjustable voltage regulator support
  • Calculate resistor combinations
  • Determine resistor values
  • Export results to CSV
  • Share CSV via iCloud/AirDrop
Features
Read full description

This app is a voltage regulator calculator. It is is suitable for electronics hobbyist, electronic engineers or professionals. Features * Support 3-terminals adjustable voltage regulators * To find out combinations of 2 resistors making a desired output voltage * Calculate resistor values / output voltage * Export results to CSV file * Share CSV file to iCloud Drive (For iOS8 or later) * Share CSV file via AirDrop (For iOS7 or later) Feature in PRO only * Calculate thermal resistance of heatsink * Selectable 1%, 5% resistors * No ads * No limitations

About

iRobbie

Enhance robotic projects with smartphone capabilities. Connect to Arduino, ESP32-CAM, or ESP8266 boards via Bluetooth or WiFi. Utilize object recognition, tracking, and voice control for interactive robot experiences.

Highlights
  • Object recognition and tracking
  • ESP32-CAM video surveillance
  • Voice and remote control
  • Touch screen joystick
  • Music playback (Xylophone)
Read full description

iRobbie is the revolutionary app that brings a smartphone power to your robotic projects. iRobbie connects via Bluetooth or WiFi to the Arduino, ESP32-CAM or ESP8266 boards. Use the iPhone camera and play with object recognition, object tracking and more. Start learning computer vision and neural networks with iRobbie App! With iRobbie your Arduino robot can recognize and track over 60 objects, get a responsive touch screen joystick and even allow you to play music! With ESP32-CAM you can build your own video surveillance robot and control it through the Internet. For example, with the iRobbie-A app you can send the robot to the kitchen to check if you accidentally left the kettle on the stove! Features: o ESP32-CAM – build your own video surveillance car! o Object Tracker – tap and drag over the object you want to track and your iRobbie robot will follow the object. o iFinder – just tell iRobbie what you want him to find. iRobbie is able to recognize over 60 objects and he will start tracking the object after recognizing it. o Voice Control – you can control your iRobbie robot by telling him here to go. o Remote Control – a responsive touch screen joystick on your iPhone to control the iRobbie robot. o Xylophone – play music with your iRobbie robot. Arduino compatible boards, parts and kits are sold separately. Visit our web-site to find detailed instructions on to build the robots. Arduino is Trademark of Arduino AG, which does not sponsor, authorize or endorse this product.

Screenshots

Voltage Regulator4 screens
iRobbie4 screens

Verdict

The call

The clearest difference is review sentiment: Voltage Regulator at 100% against iRobbie's 0%. Voltage Regulator also leads on price (Free vs $5.99) and rating (4.8 vs 3.0). iRobbie's advantage is in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 9 months). On ads, device support and iOS requirement 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

Voltage Regulator is free to download; iRobbie costs $5.99 up front. Voltage Regulator sells 1 one-off in-app purchase. iRobbie asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Voltage Regulator holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Voltage Regulator has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Voltage Regulator's written reviews are positive against 0% of iRobbie's.

UpkeepUpdate frequency

Voltage Regulator ships an update every 9 months, iRobbie every 6 weeks. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

Scorecard7 real differences · 3 level
Voltage Regulator versus iRobbie: the parameters behind the verdict, then further details
ParameterVoltage RegulatoriRobbie
PriceFree — better$5.99
Rating4.8 (5 ratings) — better3.0 (1 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings5 — better1
Update frequencyEvery 9 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better12.1
Further details — not scored
Size3 MB395 MB
Age rating4+4+
DeveloperSiu Yuen HoMCV Palo Alto LLC

Customer experience

Voltage Regulator

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

iRobbie

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

1 purchases

Voltage Regulator

One-time1
  • Unlock Pro features$1.99
None

iRobbie

No in-app purchases

Questions

Is Voltage Regulator free?
Voltage Regulator is free to download, with in-app purchases available.
Is iRobbie free?
iRobbie costs $5.99, with no in-app purchases.
Which has better reviews, Voltage Regulator or iRobbie?
Voltage Regulator is rated higher. Voltage Regulator averages 4.8 out of 5 from 5 ratings, while iRobbie averages 3.0 from 1 ratings.
Do Voltage Regulator or iRobbie have ads?
Neither Voltage Regulator nor iRobbie shows ads.
Which is updated more often, Voltage Regulator or iRobbie?
Voltage Regulator ships an update every 9 months, and iRobbie every 6 weeks. Most recently, Voltage Regulator was updated on October 24, 2026 and iRobbie on October 6, 2026.

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