Comparison

Drill Bit Converter vs Material Removal Rate

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

Head to head
About

Drill Bit Converter

Features
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If you have ever had to try to figure out which Fractional or Decimal bit is close enough to a particular Metric size, this is the app for you. Drill Bit Converter performs rapid conversions between Inch Fractional, Inch Decimal, Metric, and Gauge Drill Sizes. Simply select the unit of interest, type in a value, and the nearest equivalent of all other unis will be instantly displayed. When conversions to Inch Fractional or Gauge sizes are not exact, the app will display the amount of error. You can then easily tell if you have an alternative drill bit on hand that is close enough for your project. The app also includes a help display to explain the key features of the app, and it includes several pdf files containing helpful reference charts for drill and tap conversions and selections. You can email or print these charts. Printing requires an Air Print Connection. We welcome your feedback and suggestions for improvement. Thanks for considering our offering.

About

Material Removal Rate

Features
Read full description

Boost throughput and cut guesswork with the Material Removal Rate Calculator—your quick, reliable way to quantify MRR and tune cutting parameters for real-world results. Material removal rate is the volume removed per unit time and a direct indicator of cutting efficiency, cycle time, and profitability. Built for production decisions Get fast, consistent answers when you are comparing setups and tooling, verifying CAM programs on the floor, estimating cycle time and machine load, and balancing productivity versus tool life. What’s inside MRR calculators for Turning, Milling, Drilling, Grinding, and Grooving—enter depth and width of cut and feed to compute removal volume instantly. Spindle Speed and Feed Rate helpers turn SFM, RPM, IPT, and IPM into actionable machine settings. Chip Load (Feed per Tooth) guidance helps you hit proper chip thickness per edge and avoid rubbing or overload. Make better trade-offs Finding the sweet spot between speed and feed protects tool life while keeping parts moving. The app helps you understand those levers so you can push feed where it matters, trim cutting speed when heat is climbing, and keep surface finish on spec. Why it matters Faster setup validation by quantifying removal rates when you change cutters, holders, or offsets. Repeatable results by standardizing shop math across shifts and machines. Less waste and more parts by reducing trial and error and moving toward predictable cycle times. Whether you are roughing aluminum, profiling stainless, drilling deep holes, or grinding to finish, this calculator brings proven shop math to your pocket so you can decide with data, not hunches.

Screenshots

Drill Bit Converter4 screens
Material Removal Rate4 screens

Verdict

The call

The clearest difference is ads: Drill Bit Converter at none against Material Removal Rate's shown. Drill Bit Converter also leads on price ($0.99 vs $1.99) and iOS requirement (13.0 vs 16.2). Material Removal Rate's advantage is update cadence (every 8 months vs every 54 months). On 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

Drill Bit Converter costs $0.99 and Material Removal Rate $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Drill Bit Converter ships an update every 54 months, Material Removal Rate every 8 months. The most recent releases landed on September 21, 2026 and June 24, 2026 respectively.

Scorecard4 real differences · 2 level
Drill Bit Converter versus Material Removal Rate: the parameters behind the verdict, then further details
ParameterDrill Bit ConverterMaterial Removal Rate
Price$0.99 — better$1.99
Update frequencyEvery 54 monthsEvery 8 months — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.2
Further details — not scored
Size2 MB3 MB
Age rating4+4+
DeveloperDohmann Engineering ServicesVladislav Zhirnov

In-app purchases

None

Drill Bit Converter

No in-app purchases

None

Material Removal Rate

No in-app purchases

Questions

Is Drill Bit Converter free?
Drill Bit Converter costs $0.99, with no in-app purchases.
Is Material Removal Rate free?
Material Removal Rate costs $1.99, with no in-app purchases.
Do Drill Bit Converter or Material Removal Rate have ads?
Material Removal Rate shows ads; Drill Bit Converter does not.
Which is updated more often, Drill Bit Converter or Material Removal Rate?
Drill Bit Converter ships an update every 54 months, and Material Removal Rate every 8 months. Most recently, Drill Bit Converter was updated on September 21, 2026 and Material Removal Rate on June 24, 2026.

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