Comparison

Physics Formulas Lite vs Sharp Eye

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

Head to head
About

Physics Formulas Lite

Quickly access and reference physics formulas for study and work. Features include calculation tools, multi-language support, a favorites folder, and formula sharing. Search and add custom formulas and tools.

Highlights
  • Formula reference by category
  • In-app calculation tools
  • Multi-language support
  • Favorites folder for quick access
  • Formula sharing functionality
  • Searchable formula database
  • Add custom formulas and tools
Features
Read full description

From the success of Maths Formulas app, Physics Formulas has been developed and released to help users quickly refer to any Physics formulas for their study and work. This app displays most popular formulas in seven categories: - Mechanics - Electricity - Thermal physics - Periodic motion - Optics - Atomic physics - Constants This app has all functions to help users use the app conveniently - Tools: users can input data and the app will calculate some popular physics problems. - Supporting multiple languages: it's the best to read in your mother language as well as in English to expand your language skills. This app supports English, Vietnamese, Chinese (Trad/Simp), Turkish, Spanish, German, French, Portuguese, Russian, Indonesian, Persian, Italian, Hindi and Arabic. More languages to come soon. - Favorite folder: save frequently used formulas in a favorite folder to quickly access to them. - Sharing: touch and share a formula to friends via message, email or Facebook. - Searching: users can type key words in top of the screen to quickly find a formula. - Add your own formulas or notes in "Favorite" section. - Add your own customized tools in "Tools" section (unlimited number of formulas and variables for Full version). This is the essential app for everybody especially students, engineers and scientists.

About

Sharp Eye

Features
Read full description

Sharp Eyes is a simple yet increasingly challenging mobile game that puts your focus and memory to the test. As you progress, every correct answer raises the difficulty level — only those with the sharpest eyes and strongest concentration will reach the top scores! The gameplay is easy to grasp but tough to master. You’ll be shown pairs of shapes inside semi-transparent white squares. Your task? Decide quickly whether their shape and color are the same — but act fast, because you’re racing against the clock. After each answer, the figures slide to the left, revealing the next pair. Here's the twist: with every round, fewer figures remain visible, and your time gets shorter. That means you’ll need to remember the earlier figures to make the right calls. When only one figure is left on the screen, the real challenge begins — and so does the fun! Give Sharp Eyes a try and see how far your concentration can take you. It’s quick to learn, fun to play, and perfect for sharpening your focus anytime, anywhere. Thank you for your interest! Subscriptions Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Physics Formulas Lite4 screens
Sharp Eye3 screens

Verdict

The call

The clearest difference is in-app purchases: Physics Formulas Lite at none against Sharp Eye's 3. Physics Formulas Lite also leads on ads (none vs shown). Sharp Eye's advantage is update cadence (monthly vs every 4 months) and iOS requirement (13.0 vs 15.1). 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. Sharp Eye sells 3 in-app purchases, starting at $0.99 per month. Physics Formulas Lite asks for nothing beyond the download.

UpkeepUpdate frequency

Physics Formulas Lite ships an update every 4 months, Sharp Eye monthly. The most recent releases landed on September 23, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Physics Formulas Lite versus Sharp Eye: the parameters behind the verdict, then further details
ParameterPhysics Formulas LiteSharp Eye
PriceFreeFree
Rating4.6 (60 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings60 — better—
Update frequencyEvery 4 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size43 MB28 MB
Age rating4+4+
DeveloperNSC CO. PTY LTDIvan Gastilovic

In-app purchases

None

Physics Formulas Lite

No in-app purchases

3 purchases

Sharp Eye

Subscriptions3
  • 1 Month No Ads Subscription$0.991 Month
  • 6 Months No Ads Subscription$4.996 Months
  • 1 Year No Ads Subscription$8.991 Year

Questions

Is Physics Formulas Lite free?
Physics Formulas Lite is free to download, with no in-app purchases.
Is Sharp Eye free?
Sharp Eye is free to download, with in-app purchases available.
Do Physics Formulas Lite or Sharp Eye have ads?
Sharp Eye shows ads; Physics Formulas Lite does not.
Which is updated more often, Physics Formulas Lite or Sharp Eye?
Physics Formulas Lite ships an update every 4 months, and Sharp Eye monthly. Most recently, Physics Formulas Lite was updated on September 23, 2026 and Sharp Eye on October 6, 2026.

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