Comparison

Voltage Drop Pro vs BareBolus

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

Head to head
About

Voltage Drop Pro

Features
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Voltage Drop Calc is a fast, easy way to create a schedule of voltage drop calculations for any size of job or just to perform a single calculation on the fly. Put your pencil down and start making professional, consistent calculation today. - Universal app allows use on both iPad, and iPhone/iPod with single purchase. - Create an unlimited list of calculations that automatically save. - Export your results to a spreadsheet for formatting or printing. - Solve for distance in feet or meters. - Solve for voltage drop in either voltage or percentage. - Solve for wire size including derating. - Built in construction calculator allows intermediate calculations to be performed within the app.

About

BareBolus

Features
Read full description

This calculator displays a list of any blood sugar values to the left - and the corresponding insulin to the right. Drag the blue apple to set your carb estimate. Easily edit your favourite personal factors in the settings and choose between them from the main screen. It is a simple and convenient tool without hidden mathematics or advanced algorithms. Once you know your blood sugar, you can look up your insulin with a glance at the screen. Designed by the father of a diabetic who refused to wear a pump. It turns out to be very useful for all people with diabetes. Seek a doctor's advice in addition to using this app and before making any medical decisions.

Screenshots

Voltage Drop Pro4 screens
BareBolus4 screens

Verdict

The call

The clearest difference is price: BareBolus at Free against Voltage Drop Pro's $3.99. BareBolus also leads on iOS requirement (15.6 vs 17.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

BareBolus is free to download; Voltage Drop Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 5, 2026.

Scorecard2 real differences ยท 4 level
Voltage Drop Pro versus BareBolus: the parameters behind the verdict, then further details
ParameterVoltage Drop ProBareBolus
Price$3.99Free โ€” better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.515.6 โ€” better
Further details โ€” not scored
Size15 MB11 MB
Age rating4+4+
DeveloperSnappy Appz Inc.DiaBolus AS

In-app purchases

None

Voltage Drop Pro

No in-app purchases

None

BareBolus

No in-app purchases

Questions

Is Voltage Drop Pro free?
Voltage Drop Pro costs $3.99, with no in-app purchases.
Is BareBolus free?
BareBolus is free to download, with no in-app purchases.
Do Voltage Drop Pro or BareBolus have ads?
Neither Voltage Drop Pro nor BareBolus shows ads.
Which is updated more often, Voltage Drop Pro or BareBolus?
Voltage Drop Pro ships an update every 2 months, and BareBolus every 2 months. Most recently, Voltage Drop Pro was updated on October 5, 2026 and BareBolus on October 5, 2026.

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