Comparison

ShiftPower vs Starrettcalc

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

Head to head
About

ShiftPower

Enhance your driving experience with customizable acceleration modes for sportier and safer performance. Control your vehicle's safety with dedicated Lock and Valet modes, offering over 300 acceleration response maps for a personalized feel.

Highlights
  • Four customizable driving modes
  • Lock and Valet safety modes
  • Over 300 acceleration response maps
  • Sportier and safer overtaking
  • Plug-and-Play installation
Features
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Eliminate acceleration delay with four customizable quick access driving modes (Dynamic, Sport, Super Sport and Race). Control your car's safety with Lock and Valet modes. Enjoy the pleasure of driving in a sportier and safer way when overtaking. Over 300 acceleration response maps. Easy installation. Plug-and-Play connections. Here begins the experience of driving a new car, yours.

About

Starrettcalc

Features
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The StarrettCalc app will help you choose the best saw option for any type of cut. You can explore the Band Saw, Hole Saw, Reciprocating Saw, and Jig Saw lines to find the most suitable saw, along with the best practices and cutting parameters for your work. It’s the ideal solution for making smart choices, boosting productivity, and extending the tool’s lifespan.

Screenshots

ShiftPower4 screens
Starrettcalc4 screens

Verdict

The call

The clearest difference is ads: Starrettcalc at none against ShiftPower's shown. ShiftPower's advantage is device support (4 vs 2) and iOS requirement (15.1 vs 17.5). On price, update cadence and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ShiftPower ships an update every 2 weeks, Starrettcalc fortnightly. The most recent releases landed on September 22, 2026 and June 5, 2026 respectively.

Scorecard3 real differences · 7 level
ShiftPower versus Starrettcalc: the parameters behind the verdict, then further details
ParameterShiftPowerStarrettcalc
PriceFreeFree
Rating4.8 (316 ratings) — better—
Positive reviews71.4% of reviews—
Number of ratings316 — better—
Update frequencyEvery 2 weeks — betterFortnightly
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.1 — better17.5
Further details — not scored
Size109 MB50 MB
Age rating+44+
DeveloperFaaftech Tecnologia LtdaStarrett

In-app purchases

None

ShiftPower

No in-app purchases

None

Starrettcalc

No in-app purchases

Questions

Is ShiftPower free?
ShiftPower is free to download, with no in-app purchases.
Is Starrettcalc free?
Starrettcalc is free to download, with no in-app purchases.
Do ShiftPower or Starrettcalc have ads?
ShiftPower shows ads; Starrettcalc does not.
Which is updated more often, ShiftPower or Starrettcalc?
ShiftPower ships an update every 2 weeks, and Starrettcalc fortnightly. Most recently, ShiftPower was updated on September 22, 2026 and Starrettcalc on June 5, 2026.

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