Comparison

Optix C2 vs ReCalc

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

Head to head

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About

Optix C2

Features

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Welcome to OPTIX C2 – your ultimate tool for enhancing your military-grade optic instrument experience. With OPTIX C2, accessing live views, reviewing video clips, and fine-tuning your device is now simpler than ever, all from the convenience of your smartphone. Immerse yourself in real-time visual data with our live view feature, providing crystal-clear imagery in any environment. Whether you're on a covert mission or wildlife observation, OPTIX C2 ensures you capture every detail with precision. Easily review recorded video clips to relive your adventures or analyze critical moments. Take control of your OPTIX C2 instrument with intuitive adjustments, allowing you to tailor settings to your exact needs effortlessly. Our user-friendly interface guarantees seamless navigation, so you can focus on the task at hand without any distractions. Rest assured, your privacy and security are our top priorities. OPTIX C2 employs advanced encryption to safeguard your data, ensuring your peace of mind during every operation. Experience the convenience and power of OPTIX C2. Download now and elevate your optic instrument experience to new heights.

About

ReCalc

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ReCalc (Receipt Calculator) scans the receipt and recognize prices so you can select yours. It's very useful when you are with friends in a restaurant. 1. Take a picture of a receipt (scan). 2. Tap on a price to select/deselect… 3. …or slide right to multiply, left to divide (one or more times). 4. Long press on the price to correct it, if needed. ReCalc is built by Trayangle Labs. trayangle.com

Screenshots

Optix C24 screens

ReCalc4 screens

Verdict

The call

The clearest difference is update cadence: ReCalc at every 5 days against Optix C2's every 2 months. Optix C2's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Optix C2 ships an update every 2 months, ReCalc every 5 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 3 level

Optix C2 versus ReCalc: the parameters behind the verdict, then further details
Parameter	Optix C2	ReCalc
Price	Free	Free
Update frequency	Every 2 months	Every 5 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	11.0 — better	16.0
Further details — not scored
Size	264 MB	1 MB
Age rating	4+	4+
Developer	Nitehog	TRAYAN ATANASOV MOMKOV

In-app purchases

None

Optix C2

No in-app purchases

None

ReCalc

No in-app purchases

Questions

Is Optix C2 free?

Optix C2 is free to download, with no in-app purchases.

Is ReCalc free?

ReCalc is free to download, with no in-app purchases.

Do Optix C2 or ReCalc have ads?

Neither Optix C2 nor ReCalc shows ads.

Which is updated more often, Optix C2 or ReCalc?

Optix C2 ships an update every 2 months, and ReCalc every 5 days. Most recently, Optix C2 was updated on October 7, 2026 and ReCalc on October 10, 2026.