Comparison

VBusTouch vs Tank Volume & Capacity

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

Head to head
About

VBusTouch

Monitor your solar system's performance worldwide with detailed temperature charts and yield balances. This app provides real-time system status updates directly on your iPad.

Highlights
  • View detailed temperature charts
  • Generate yield balances
  • Monitor system status
  • Worldwide access
  • iPad optimized
Features
Read full description

The new RESOL app for the Apple iPad makes your solar yield palpable – worldwide. A touch of your finger is all you need to view detailed temperature charts, generate yield balances and monitor your system‘s status. The basic version of the VBus®Touch app is available for download free of charge in the App Store. More features and extensions are under way. To visualise your individual system with VBus®Touch, a RESOL controller with VBus® data interface (e. g. DeltaSol® BX Plus), connected to the Internet via a DL2 or DL3 datalogger, is required.

About

Tank Volume & Capacity

Estimate the total and filled volumes of various tank shapes, including rectangular, cylindrical, and those with conical or spherical bottoms. Calculates liquid volume and weight based on filling level, providing an estimate for oil and water tanks.

Highlights
  • Estimate total and filled tank volumes
  • Calculates liquid volume and weight
  • Supports rectangular tanks
  • Supports horizontal cylindrical tanks
  • Supports vertical cylindrical tanks
  • Supports tanks with conical or spherical bottoms
Features
Read full description

Calculate the volume, capacity, and storage size of almost any tank with precision. Whether you work with water tanks, fuel tanks, chemical containers, aquariums, agricultural storage, or industrial vessels, this app provides fast and accurate calculations. Designed for engineers, contractors, plumbers, facility managers, students, farmers, and DIY users. The application calculates the volume and weight of a liquid by its filling level, empty and total volume. Calculations are performed for: - Rectangular tank - Horizontal cylindrical tank - Vertical cylindrical tank - Cylindrical tank with conical bottom - Cylindrical tank with truncated conical bottom - Cylindrical tank with spherical bottom Download Tank Volume Calculator today and accurately determine tank capacity, liquid volume, and storage requirements in seconds. Privacy Policy : https://docs.google.com/document/d/1bxkh1xGMoaLt3LQxm-MRT12aN7a8f2Bx1yQY_PpDdYI/edit?usp=sharing Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Tank Volume & Capacity4 screens

Verdict

The call

The clearest difference is review sentiment: VBusTouch at 44% against Tank Volume & Capacity's 0%. VBusTouch also leads on rating (3.0 vs 1.3) and in-app purchases (none vs 3). Tank Volume & Capacity's advantage is ratings volume (6 vs 1) and device support (3 vs 1). On price, update cadence and ads 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

Both are free to download. Tank Volume & Capacity sells 3 in-app purchases, starting at $4.99 per 7 days. VBusTouch asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VBusTouch holds the better App Store score, 3.0 against 1.3. That said, the two scores are not equally well evidenced: Tank Volume & Capacity has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 44% of VBusTouch's written reviews are positive against 0% of Tank Volume & Capacity's.

UpkeepUpdate frequency

VBusTouch ships an update every 28 months, Tank Volume & Capacity every 50 months. The most recent releases landed on October 7, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
VBusTouch versus Tank Volume & Capacity: the parameters behind the verdict, then further details
ParameterVBusTouchTank Volume & Capacity
PriceFreeFree
Rating3.0 (1 ratings) — better1.3 (6 ratings)
Positive reviews44.4% of reviews — better0.0% of reviews
Number of ratings16 — better
Update frequencyEvery 28 months — betterEvery 50 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS7.0 — better13.0
Further details — not scored
Size6 MB59 MB
Age rating4+4+
DeveloperRESOL GmbHGorasiya Vishal Nanjibhai

Customer experience

VBusTouch

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews9 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

Tank Volume & Capacity

All ratings6 ratings
Positive0.0%
Neutral16.7%
Negative83.3%
Written reviews8 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

In-app purchases

None

VBusTouch

No in-app purchases

3 purchases

Tank Volume & Capacity

Subscriptions2
  • Weekly$4.997 Days
  • Yearly$29.991 Year
One-time1
  • Lifetime$49.99

Questions

Is VBusTouch free?
VBusTouch is free to download, with no in-app purchases.
Is Tank Volume & Capacity free?
Tank Volume & Capacity is free to download, with in-app purchases available.
Which has better reviews, VBusTouch or Tank Volume & Capacity?
VBusTouch is rated higher. VBusTouch averages 3.0 out of 5 from 1 ratings, while Tank Volume & Capacity averages 1.3 from 6 ratings.
Do VBusTouch or Tank Volume & Capacity have ads?
Neither VBusTouch nor Tank Volume & Capacity shows ads.
Which is updated more often, VBusTouch or Tank Volume & Capacity?
VBusTouch ships an update every 28 months, and Tank Volume & Capacity every 50 months. Most recently, VBusTouch was updated on October 7, 2026 and Tank Volume & Capacity on September 23, 2026.

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