Comparison

Simple_Clock vs Engine Builder Pro

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

Head to head
About

Simple_Clock

A minimalist analog clock designed with a classic Apple iPad aesthetic. It offers the unique ability to integrate calendar events and reminders as clock hands for enhanced time management.

Highlights
  • Classic Apple iPad style analog clock
  • Optional calendar integration as clock needles
  • Optional reminders integration as clock needles
  • Minimalist design
Features
Read full description

Classic Apple iPad style clock. Feature • Add Calendar and Reminders as clock needles (optional) Support: vibecoder.company@gmail.com

About

Engine Builder Pro

Features
Read full description

Engine Builder Pro brings engine build records and practical workshop calculators together in one place. Create detailed customer build sheets, store measurements and component specifications, attach build photos, generate PDF reports and keep portable backups. Calculators can use values from the current job, reducing repeated entry and helping keep calculations connected to the build being assembled. Workshop tools include: • Static and dynamic compression calculations • Target compression and engine stack-up solving • Piston-to-valve clearance visualisation • Cam degree and valve-train setup tools • Carburettor sizing with camshaft inputs • Ring-gap, rod-ratio, head-porting and measurement calculators • Job-linked build checks and missing-input guidance • PDF build sheets, photos and portable backups Cam-card details are entered manually, keeping the recorded figures under the builder's direct control. Engine Builder Pro is intended as a recordkeeping and calculation aid for knowledgeable engine builders. Users remain responsible for checking measurements, inputs, component instructions and final assembly decisions.

Screenshots

Simple_Clock2 screens
Engine Builder Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Engine Builder Pro at none against Simple_Clock's 1. Engine Builder Pro also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). On price 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. Simple_Clock sells 1 one-off in-app purchase. Engine Builder Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Simple_Clock ships an update weekly, Engine Builder Pro every 2 days. The most recent releases landed on October 30, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Simple_Clock versus Engine Builder Pro: the parameters behind the verdict, then further details
ParameterSimple_ClockEngine Builder Pro
PriceFreeFree
Rating4.7 (146 ratings) — better—
Positive reviews70.6% of reviews—
Number of ratings146 — better—
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size91 MB22 MB
Age rating4+4+
DeveloperSeung-Un HamGemma Beames

In-app purchases

1 purchases

Simple_Clock

One-time1
  • Remove Ads (Lifetime)$4.99
None

Engine Builder Pro

No in-app purchases

Questions

Is Simple_Clock free?
Simple_Clock is free to download, with in-app purchases available.
Is Engine Builder Pro free?
Engine Builder Pro is free to download, with no in-app purchases.
Do Simple_Clock or Engine Builder Pro have ads?
Simple_Clock shows ads; Engine Builder Pro does not.
Which is updated more often, Simple_Clock or Engine Builder Pro?
Simple_Clock ships an update weekly, and Engine Builder Pro every 2 days. Most recently, Simple_Clock was updated on October 30, 2026 and Engine Builder Pro on October 5, 2026.

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