Comparison

PerfectPower vs Gpace App

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

Head to head
About

PerfectPower

This app provides professional-grade automotive power and performance measurements using your smartphone's sensors. It offers unparalleled accuracy and a wide range of features for measuring acceleration, speed, power, and torque, all without external equipment.

Highlights
  • Measure engine power (DIN, CEE, SAE, JIS, ISO)
  • Measure performance (accelerations, speed, braking)
  • Simulate performance metrics
  • Calculate gearbox ratios
  • Measure lap times on track
  • High accuracy sensor combination
Read full description

PerfectPower is, in the form of a revolutionary smartphone application, the automotive reference on-board system in power and performance measurements, the one with the best price / reliability of results / variety of features / operational independence ratio! Indeed: 1) Exceptional and unprecedented results reliability for a smartphone application, comparable to that of professional equipments, since it measures acceleration, speed, and distance with an accuracy of +- 0.5%, and power and torque with an accuracy of +- 1%! For information, a friendly challenge of 10,000 euros & dollars was launched on this subject on May 1, 2024, which is still waiting to be taken up… Note: Such accuracy is made possible by the accurate, permanent, and clever combination of the information of the accelerometer and the GPS of the phone, knowing how to take the best of both sensors while eliminating the specific disadvantages when used individually. 2) Unprecedented features variety not only for a smartphone application but also all equipments combined, since it allows to: - Measure the standardized engine power (DIN, CEE, SAE, JIS, ISO) - Measure the performance (accelerations, runs flying start, max speed, braking -soon available-) - Simulate the performance (accelerations, runs flying start, max speed, ideal max revs) - Calculate gearbox ratios by rev calibration (as on chassis dynamometer) (soon available) - Measure freewheeling losses (soon available) - Measure lap times on track Of course, as its name suggests, PerfectPower specialized in power measurements, which are the most interesting measurements of all in Automotive Physics! 3) Total operational independence, since it requires absolutely no connection to any external equipment (external GPS, car ECU, etc), which allows it to operate on 100% of the cars produced on the planet, and with only your smartphone as a measuring instrument! This does not prevent it from accepting communication via Bluetooth with certain high-performance external GPS in order to further optimize its results accuracy! 4) It only costs… 33 euros & dollars (27 currently), when: - a chassis dynamometer (professional power measurement tool) costs between 30,000 and 120,000 euros & dollars! - a simple pass on such equipment is charged 50 to 120 euros & dollars (without guarantee of maximum reliability!) - an optical reading system (professional performance measurement tool) costs around 15,000 euros & dollars! Of course, there are a certain number of rules to follow to achieve optimally accurate measurements (the most important being to perform measurements in both directions of the road -and on the same portion- and to ask PerfectPower to average them in order to eliminate the effects of road slope and wind), but when these rules are well followed, PerfectPower has proven that: - It was as accurate for power measurements as the best chassis dynamometers (Rotronics -France-, Maha -Germany-, DynoJet -USA-) - It was as accurate for acceleration measurements as the best external GPS, the RaceBox Mini - It was significantly more accurate than any other smartphone application in the field All information about this awesome application on its official website www.perfectpower.pro

About

Gpace App

This app enhances track driving by collecting real-time performance data through seamless Bluetooth integration with specific hardware. It provides instant drag information, lap time analysis, and customizable vehicle tracking to help drivers refine their skills and save memorable sessions.

Highlights
  • Bluetooth integration with VT-1 hardware
  • Real-time 25Hz performance metrics
  • Instant drag data (1/4 mile, 0-100, 100-200)
  • Lap time comparison for skill refinement
  • Customizable vehicle specifications
  • Session history saving
  • Flexible unit switching (km/h, mph, meters, miles)
Features
Read full description

Note: The app requires additional VT-1 hardware and does not function as a standalone product. Transform your driving experience with Gpace, the all-in-one app that turns every track ride into an adventure. • Seamless Integration: Connect effortlessly to VT-1 via Bluetooth for enhanced data collection. • Real-Time Performance Metrics: Access 25Hz data from VT-1 for precise measurements. • Instant Drag Data: Get immediate drag info like 1/4 mile, 0-100, 100-200 acceleration stats. • Track Analysis: Compare lap times to refine your racing skills. • Customization: Add and save your vehicle specs for personalized tracking. • Session History: Never lose a memorable drive with our session saving feature. • Flexible Units: Switch between km/h - mph and meters - miles effortlessly. • Custom Drag Ranges: Set your own speed and distance parameters for drag measurements. Download Gpace now and elevate your driving experience. Because with Gpace, every ride is an opportunity to become a better track driver.

Screenshots

PerfectPower4 screens
Gpace App4 screens

Verdict

The call

The clearest difference is price: Gpace App at Free against PerfectPower's $33.00. Gpace App also leads on update cadence (every 2 weeks vs every 2 months). PerfectPower's advantage is iOS requirement (12.0 vs 14.0). On review sentiment, 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

Gpace App is free to download; PerfectPower costs $33.00 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PerfectPower ships an update every 2 months, Gpace App every 2 weeks. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

Scorecard4 real differences · 6 level
PerfectPower versus Gpace App: the parameters behind the verdict, then further details
ParameterPerfectPowerGpace App
Price$33.00Free — better
Rating—5.0 (2 ratings) — better
Positive reviews95.0% of reviews — better88.9% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better14.0
Further details — not scored
Size3 MB81 MB
Age rating4+4+
DeveloperLa maison de SpinozaGPACE TEKNOLOJI ITHALAT IHRACAT TICARET VE SANAYI ANONIM SIRKETI

Customer experience

PerfectPower

Written reviews20 reviews
Positive95.0%
Neutral0.0%
Negative5.0%

Gpace App

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

In-app purchases

None

PerfectPower

No in-app purchases

None

Gpace App

No in-app purchases

Questions

Is PerfectPower free?
PerfectPower costs $33.00, with no in-app purchases.
Is Gpace App free?
Gpace App is free to download, with no in-app purchases.
Do PerfectPower or Gpace App have ads?
Neither PerfectPower nor Gpace App shows ads.
Which is updated more often, PerfectPower or Gpace App?
PerfectPower ships an update every 2 months, and Gpace App every 2 weeks. Most recently, PerfectPower was updated on September 21, 2026 and Gpace App on June 1, 2026.

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