Comparison

Aroma Core vs Spark Plug Reader

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

Head to head
About

Aroma Core

Effortlessly customize and control your scenting experience with this app, designed exclusively for Aroma Core machines. Manage your environment's aroma with just a few taps.

Highlights
  • Customize scent experience
  • Control scenting machines
  • Effortless operation
  • Intuitive interface
Features
Read full description

Elevate your environment with the Aroma Core app, designed exclusively for Aroma Core machines. Effortlessly customize and control your scenting experience with just a few taps

About

Spark Plug Reader

Features
Read full description

Plug Read turns a spark plug into a diagnosis, and now it torques the replacement in correctly too. MATCHED BY EYE, NOT BY PART NUMBER Eight appearances, drawn as they come out of an engine. Tap the match and you get what it means and what to check, in the order worth checking it. INSTALL TORQUE, BY THREAD AND SEAT Pick the thread size and seat type, the head material, and get the torque range in both ft-lb and Nm, plus the hand-tight-and-turn fallback for when you do not have a torque wrench. Cross a plug wrong and you either strip the threads or leave it loose enough to blow out under compression, and the difference between right and wrong can be as little as five foot-pounds. THE PLUG IS THE CHEAPEST WINDOW INTO AN ENGINE Five minutes with a plug spanner tells you more about mixture, timing and oil control than an hour of guessing. NO PART NUMBERS, NO DATABASE Nothing here goes out of date, because it works from the plug in your hand and the thread you are installing into rather than a list of engine models. WORKS OFFLINE No account, no signal. The torque table is a published general reference cross-checked across several independent sources, not a measured specification for any specific engine. Manufacturer torque specification always takes precedence.

Screenshots

Aroma Core4 screens
Spark Plug Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: Aroma Core at none against Spark Plug Reader's 1. Aroma Core also leads on iOS requirement (12.0 vs 16.4). Spark Plug Reader's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads 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

Both are free to download. Spark Plug Reader sells 1 one-off in-app purchase. Aroma Core asks for nothing beyond the download.

UpkeepUpdate frequency

Aroma Core ships an update every 3 weeks, Spark Plug Reader every 2 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Aroma Core versus Spark Plug Reader: the parameters behind the verdict, then further details
ParameterAroma CoreSpark Plug Reader
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.4
Further details — not scored
Size59 MB37 MB
Age rating4+4+
Developer可汗 罗EVREN YUCEBAS

In-app purchases

None

Aroma Core

No in-app purchases

1 purchases

Spark Plug Reader

One-time1
  • Full Version$4.99

Questions

Is Aroma Core free?
Aroma Core is free to download, with no in-app purchases.
Is Spark Plug Reader free?
Spark Plug Reader is free to download, with in-app purchases available.
Do Aroma Core or Spark Plug Reader have ads?
Neither Aroma Core nor Spark Plug Reader shows ads.
Which is updated more often, Aroma Core or Spark Plug Reader?
Aroma Core ships an update every 3 weeks, and Spark Plug Reader every 2 days. Most recently, Aroma Core was updated on October 16, 2026 and Spark Plug Reader on October 6, 2026.

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