Comparison

MMM Calc vs Pipe Slope Invert Planner

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

Head to head
About

MMM Calc

This application helps users quickly calculate their concrete, aggregate, ready-mix, and asphalt needs. It serves as a straightforward tool for material estimation in construction and related projects.

Highlights
  • Concrete calculation
  • Aggregate estimation
  • Ready-mix calculation
  • Asphalt needs
  • Material estimation tool
Features
Read full description

MMM Calc - The Product Calculator. A quick and easy tool to help you calculate your concrete needs and more, including aggregates, ready-mix, and asphalt.

About

Pipe Slope Invert Planner

Features
Read full description

Pipe Slope Invert Planner helps drainage installers, site utility crews, excavation contractors, landscape drainage crews, plumbers, and serious DIY users check a pipe run before trench work starts. Turn run length, start invert, target slope or end invert, station spacing, pipe waste, and bedding depth into a clear field sheet you can review before digging. Use it to: - solve from slope percent, total fall, or target end invert - generate station distance, fall, and invert elevation rows - check planned slope against a user-set minimum before layout - estimate pipe order length with waste - estimate bedding volume and rough gravel cost from trench dimensions - save pipe runs locally and share a plain-text station sheet Why people buy Pipe Slope Invert Planner: - a bad trench grade can mean rework after excavation starts - missed invert drops and short material orders can cost more than the app - station tables are faster to hand off than one-line slope math - pipe length, bedding volume, and rough cost belong in the same pickup sheet - saved runs help compare a side-yard drain, utility sleeve, or tie-in before layout - the app works offline with no account, ads, subscription, tracking, cloud sync, or live supplier pricing Important: Pipe Slope Invert Planner is a field math and material estimating aid. It does not provide engineering certification, code approval, drainage guarantees, permit advice, soil analysis, or site-specific installation approval. Always verify final layout, local requirements, product specifications, site conditions, and professional requirements before digging or installing.

Screenshots

MMM Calc3 screens
Pipe Slope Invert Planner4 screens

Verdict

The call

The clearest difference is price: MMM Calc at Free against Pipe Slope Invert Planner's $4.99. MMM Calc also leads on iOS requirement (12.0 vs 17.0). Pipe Slope Invert Planner's advantage is update cadence (fortnightly vs every 4 months). On 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

MMM Calc is free to download; Pipe Slope Invert Planner costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MMM Calc ships an update every 4 months, Pipe Slope Invert Planner fortnightly. The most recent releases landed on November 1, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
MMM Calc versus Pipe Slope Invert Planner: the parameters behind the verdict, then further details
ParameterMMM CalcPipe Slope Invert Planner
PriceFree — better$4.99
Rating4.3 (3 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings3 — better—
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size13 MB1 MB
Age rating4+4+
DeveloperMartin Marietta Materials Inc光 杨

In-app purchases

None

MMM Calc

No in-app purchases

None

Pipe Slope Invert Planner

No in-app purchases

Questions

Is MMM Calc free?
MMM Calc is free to download, with no in-app purchases.
Is Pipe Slope Invert Planner free?
Pipe Slope Invert Planner costs $4.99, with no in-app purchases.
Do MMM Calc or Pipe Slope Invert Planner have ads?
Neither MMM Calc nor Pipe Slope Invert Planner shows ads.
Which is updated more often, MMM Calc or Pipe Slope Invert Planner?
MMM Calc ships an update every 4 months, and Pipe Slope Invert Planner fortnightly. Most recently, MMM Calc was updated on November 1, 2026 and Pipe Slope Invert Planner on October 6, 2026.

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