ShiftPower vs Starrettcalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Four customizable driving modes
- Lock and Valet safety modes
- Over 300 acceleration response maps
- Sportier and safer overtaking
- Plug-and-Play installation
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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.
Starrettcalc
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ShiftPower ships an update every 2 weeks, Starrettcalc fortnightly. The most recent releases landed on September 22, 2026 and June 5, 2026 respectively.
| Parameter | ShiftPower | Starrettcalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (316 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 316 — better | — |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.5 |
| Further details — not scored | ||
| Size | 109 MB | 50 MB |
| Age rating | +4 | 4+ |
| Developer | Faaftech Tecnologia Ltda | Starrett |
In-app purchases
ShiftPower
No in-app purchases
Starrettcalc
No in-app purchases
