Comparison

Optris calculator vs Save For Later

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

Head to head
About

Optris calculator

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The Optris Calculator app combines the spot size calculator of the IR pyrometers and the optics calculator of the IR cameras from Optris. For each distance, the spot size of the respective device is calculated. For a correct temperature measurement with pyrometers, it is important that the spot size is not larger than the object to be measured. In the case of the cameras, the measuring area on the object surface to be analyzed is precisely determined. Based on lens information and the distance to the target, field of view dimensions, pixel size (IFOV), and MFOV (from 2x2 pixels to 4x4 pixels depending on product type) are precisely calculated. Thus, the thermal imaging camera can be optimally positioned, and measurement errors avoided. The Optris Calculator is a very helpful tool for selecting the appropriate optics fitting to the respective application. The right choice of optics is needed. App features: • Calculates the spot size of each device for each distance • Always up to date through regular updates

About

Save For Later

Effortlessly save, organize, and consume web content. Convert articles to audio, translate languages, and export to PDF. Enjoy a distraction-free reading experience with automatic tagging and powerful search.

Highlights
  • Save articles and web pages via URL
  • Smart search and filtering
  • Automatic tagging of saved items
  • Distraction-free reading mode
  • Export content as PDF
  • Convert articles to MP3 audio
  • Multilingual translation
Features
Read full description

Save For Later is your ultimate reading companion—perfect for anyone who wants to save, organize, and enjoy web content anytime, anywhere. Inspired by the beloved getpocket.app, Save For Later lets you effortlessly save articles, links, and web pages with just a URL. No account required—simply open the app and start building your personal reading list. Key Features: Save Anything Instantly: Paste any URL to save articles, blog posts, or web pages for later reading. Smart Search: Quickly find saved items with powerful search and filtering options. Auto-Tagging: The app automatically tags your saved items with relevant topics, making organization and discovery a breeze. Read Your Way: Enjoy distraction-free reading in the app or open items in your web browser. Export as PDF: Turn your saved items into PDFs for offline access or sharing. Listen On-the-Go: Convert articles and saved items to MP3 audio files for easy listening during commutes, workouts, or relaxation. Multilingual Translation: Instantly translate articles into English, French, German, Spanish, Portuguese, Croatian, Italian, or Polish. Bulk Actions: Delete all saved items in one tap—perfect for a fresh start. Privacy First: No sign-up or account required. Your data stays on your device for maximum privacy. Perfect for: Students and researchers who want to save and organize reference materials Busy professionals who need to read or listen to articles on the go Language learners seeking to translate and consume content in multiple languages Anyone who wants to declutter their browser bookmarks and keep their reading list organized Why Save For Later? No Sign-Up Hassle: Start using instantly—no login or registration required. Stay Organized: Auto-tagging and search keep your saved items easy to find. Flexible Export Options: Take your reading offline as PDFs or listen hands-free with MP3 export. Multilingual Support: Break language barriers with built-in translation. User-Friendly Design: Clean, intuitive interface for a seamless reading experience. Whether you want to save articles for later, listen to your reading list, or translate web content, Save For Later is the all-in-one solution for managing your digital reading life. Download now and never lose track of great content again! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Optris calculator3 screens
Save For Later4 screens

Verdict

The call

The clearest difference is in-app purchases: Optris calculator at none against Save For Later's 2. Save For Later's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. Save For Later sells 2 in-app purchases, starting at $0.99 per month. Optris calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Optris calculator ships an update every 2 months, Save For Later every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 7 level
Optris calculator versus Save For Later: the parameters behind the verdict, then further details
ParameterOptris calculatorSave For Later
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size31 MB104 MB
Age rating4+17+
DeveloperOptris GmbHPleme PTY LTD.

In-app purchases

None

Optris calculator

No in-app purchases

2 purchases

Save For Later

Subscriptions2
  • Save For Later Premium Monthly1 Month trial$0.991 Month
  • Save For Later Premium Yearly.1 Month trial$9.991 Year

Questions

Is Optris calculator free?
Optris calculator is free to download, with no in-app purchases.
Is Save For Later free?
Save For Later is free to download, with in-app purchases available.
Do Optris calculator or Save For Later have ads?
Neither Optris calculator nor Save For Later shows ads.
Which is updated more often, Optris calculator or Save For Later?
Optris calculator ships an update every 2 months, and Save For Later every 3 weeks. Most recently, Optris calculator was updated on October 27, 2026 and Save For Later on October 28, 2026.

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