Comparison

Hole Volumes vs Combine Fluids

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

Head to head
About

Hole Volumes

This app calculates various oilfield volumes, including hole, annular, tubing, and displacement. Users input depth, casing, and tubing sizes to get quick results. It supports both metric and standard units and allows for custom pipe sizes.

Highlights
  • Calculate hole volumes
  • Calculate annular volumes
  • Calculate tubing volumes
  • Calculate displacement volumes
  • Supports metric and standard units
  • Custom pipe size entry
Features
Read full description

Oilfield Tubing Volumes allows you to easily calculate hole, annular, tubing, and displacement volumes. Just enter the depth, casing, and tubing size and the app will do the rest! -Made specifically for oilfield/service rig applications. -Easily figure out hole volumes by putting in the hole depth and selecting the pipe and casing size. -Change from metric to standard depths and sizes -Enter custom pipe sizes *These numbers will be very close, but due to pipe weights and make, volumes may be slightly off.

About

Combine Fluids

This utility app helps oil and gas professionals quickly calculate fluid volume combinations. It allows users to input various fluid types and density requirements, saving different mix possibilities for specific wells.

Highlights
  • Combine up to 10 fluid types
  • Save fluid mix possibilities per well
  • Calculate volume combinations
  • Input mud density requirements
  • Supports volume limitations or not
Features
Read full description

Combine Fluids The creators of the top-rated app, Oilfield Calendar, offer a solution to another oilfield problem. Combine Fluids is designed to provide fast answers for everyday calculations. Combine Fluids, a simple to use calculator for the oil and gas professional. • Combine up to 10 different fluid types. • Save different mix possibilities for different wells. • From Mud Men to Derrick Men, anyone combining fluids will have a new favorite app. • Built by Oilfield guys for Oilfield user’s, putting out the best productivity apps in the industry. How to use Combine Fluids • Select weather you have volume limitations or not. • Enter your current or desired mud density, the mixing requirements will then be displayed for that information. • Save your parameters and create more volume combinations as needed. You’ve got your hardhat, steal toes, and safety glasses, now add Combine Fluids to the essential tools you need when working in the patch. Make your calculations easy, keep your life turning to the right. ** Feel free to drop us a line! We’re always listening to your suggestions and strive to improve our apps! If you have any feedback just contact us, support@archimedesworkshop.co ** ** Are you happy with the Combine Fluids app? We’d love to hear about it! Please take a moment to leave us a nice review, it truly helps us continue creating great tools for the industry! ** While you’re in the sharing mood, go ahead and post about it on Facebook too, Be Good!

Screenshots

Hole Volumes3 screens
Combine Fluids4 screens

Verdict

The call

The clearest difference is review sentiment: Combine Fluids at 67% against Hole Volumes's 0%. Combine Fluids also leads on update cadence (monthly vs every 5 months) and iOS requirement (10.0 vs 17.0). Hole Volumes's advantage is price (Free vs $0.99) and rating (4.0 vs 3.7). On ratings volume, ads, in-app purchases 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

Hole Volumes is free to download; Combine Fluids costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hole Volumes holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 0% of Hole Volumes's written reviews are positive against 67% of Combine Fluids's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Hole Volumes ships an update every 5 months, Combine Fluids monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Hole Volumes versus Combine Fluids: the parameters behind the verdict, then further details
ParameterHole VolumesCombine Fluids
PriceFree — better$0.99
Rating4.0 (3 ratings) — better3.7 (3 ratings)
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings33
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhoneiPhone, iPod — better
Requires iOS17.010.0 — better
Further details — not scored
Size4 MB85 MB
Age rating4+4+
DeveloperAsh Point Ltd.GoodStamp

Customer experience

Hole Volumes

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Combine Fluids

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Hole Volumes

No in-app purchases

None

Combine Fluids

No in-app purchases

Questions

Is Hole Volumes free?
Hole Volumes is free to download, with no in-app purchases.
Is Combine Fluids free?
Combine Fluids costs $0.99, with no in-app purchases.
Which has better reviews, Hole Volumes or Combine Fluids?
Hole Volumes is rated higher. Hole Volumes averages 4.0 out of 5 from 3 ratings, while Combine Fluids averages 3.7 from 3 ratings.
Do Hole Volumes or Combine Fluids have ads?
Neither Hole Volumes nor Combine Fluids shows ads.
Which is updated more often, Hole Volumes or Combine Fluids?
Hole Volumes ships an update every 5 months, and Combine Fluids monthly. Most recently, Hole Volumes was updated on November 1, 2026 and Combine Fluids on November 3, 2026.

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