Comparison

OSpectrometer vs BatchOptimize

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

Head to head
About

OSpectrometer

This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.

Highlights
  • Visible light spectrum analysis
  • RGB color value mapping
  • Wavelength selection and scanning
  • Front camera reflection sensing
  • Save and share results
  • Offline functionality
Features
Read full description

Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research. OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs. - Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values - A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen) - The whole spectrum or a specific part of the spectrum can be selected and scanned - Front camera is used to sense the reflection from the target object - Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum - The result can be saved and shared - Works offline, no need to connect to any network or internet Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

BatchOptimize

This app offers high-performance media and document compression for Apple devices. It can reduce file sizes by up to 90% while preserving quality, supporting various image, video, PDF, and audio formats. Automation features allow for quick processing and integration with other applications.

Highlights
  • Compress images, videos, and PDFs
  • Convert between multiple formats (WebP, AVIF, HEIC, MP4, MOV, GIF, PDF)
  • Resize images and videos
  • Add text watermarks
  • Extract audio from videos
  • Automate tasks with Apple Shortcuts
  • Merge images into PDFs
Features
Read full description

BatchOptimize is the ultimate high-performance media and document compression powerhouse engineered exclusively for macOS, iOS, and iPadOS. Built from the ground up for Apple Silicon with Metal, VideoToolbox, and CoreGraphics hardware acceleration, BatchOptimize lets you crush massive file sizes by up to 90% while preserving crisp pixel fidelity. KEY CAPABILITIES: • IMAGES & GRAPHICS: • Next-Gen Formats: Convert & compress to WebP, AVIF, HEIC, JPEG, PNG, and TIFF. • Text Watermarking: Add customizable copyright overlays with position and opacity controls. • Vector Minification: Clean and strip redundant SVG code tables and metadata. • Smart Scaling: Resize to exact bounding boxes or percentage steps. • Lossless Master: 100% bit-perfect stream cleanup with zero pixel degradation. • VIDEOS & CLIPS: • Multi-Codec: Transcode between MP4 (H.264 & HEVC/H.265), Apple ProRes MOV, WebM, and GIF. • Animated GIF & WebP: Convert video clips into smooth looping animations for Discord and web. • Audio Extraction: Demux soundtracks directly to standalone MP3, M4A, FLAC, or WAV. • Target Size Caps: Constrain video exports to strict limits (Under 25 MB Discord, Under 10 MB WhatsApp). • Fast Web Start: Place MP4 MOOV atom at start for instant online streaming. • Audio Muting: Strip unwanted audio tracks to reduce clip sizes. • PDF DOCUMENTS: • Resolution Downsampling: Choose between 72 DPI (Web), 150 DPI (Email), or 300 DPI (Print). • Merge Images to PDF: Combine photos, receipts, or scans into a single compressed PDF booklet. • Page Rotation & Alignment: Rotate pages (90° CW, 180°, 90° CCW) or auto-align (Force Portrait/Landscape). • Image Compression Levels: Choose High Quality (85%), Compact (65%), Max (45%), or Lossless (100%). • Watermark Stamps: Apply copyright and security stamps across 5 positions. • Fast Web View: Linearize PDF document structure for instant browser streaming. • Privacy Sanitization: Strip author names, editing software, and hardware serials. • AUDIO TRACKS: • Multi-Format Transcoder: Reduce bitrates for MP3 (LAME Engine), M4A (AAC with Cover Art), FLAC, and WAV. • Loudness Normalization: Standardize volume to Podcast Speech (-16 LUFS) or Music (-14 LUFS). • Smooth Fades: Apply 1s to 5s volume fade-in and fade-out to prevent clicks. • Pitch-Preserved Speed: Change playback speed (0.8x to 2.0x) with zero pitch distortion. • Channel Mixing: Convert stereo audio to mono for an instant 50% size reduction. • PRODUCTION & AUTOMATION: • Apple Shortcuts & Siri: Native AppIntents to automate bulk optimization, format conversion, and image-to-PDF merging via voice or Finder Quick Actions. • Direct Drag-Out: Drag completed files directly into Finder, Slack, Discord, Mail, Figma, or Photoshop. • Clipboard Quick Optimizer (Cmd+Shift+V): Instant 1-click import and compression for copied screenshots. • Visual Diff & Loupe: Inspect before-and-after image and PDF results side-by-side at 120 FPS. • CSV Summary Reports: Export detailed spreadsheets with byte savings and compression ratios for Excel & Numbers. • 72 Tailored Presets & iCloud Sync: One-click optimization for Shopify, Instagram, Discord, Email, and Podcasts. Custom presets sync automatically across your Mac, iPhone, and iPad via iCloud. • 100% Offline & Private: No cloud uploads, no server delays, and zero data collection.

Screenshots

OSpectrometer4 screens
BatchOptimize4 screens

Verdict

The call

The clearest difference is rating: BatchOptimize at 5.0 against OSpectrometer's 2.0. BatchOptimize also leads on update cadence (weekly vs every 2 weeks). OSpectrometer's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model 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. OSpectrometer sells 2 in-app purchases, starting at $2.99 per month and BatchOptimize sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

BatchOptimize holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

OSpectrometer ships an update every 2 weeks, BatchOptimize weekly. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
OSpectrometer versus BatchOptimize: the parameters behind the verdict, then further details
ParameterOSpectrometerBatchOptimize
PriceFreeFree
Rating2.0 (4 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.1 — better16.0
Further details — not scored
Size71 MB14 MB
Age rating4+4+
DeveloperNANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETILei Feng

Customer experience

OSpectrometer

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

BatchOptimize

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

OSpectrometer

Subscriptions2
  • month3 Days trial$2.991 Month
  • year3 Days trial$9.991 Year
6 purchases

BatchOptimize

One-time6
  • All Features Upgrade Promo 50% OFF$4.99
  • Images & WebP Pack$4.99
  • PDF & Documents Pack$4.99
Show 3 more
  • Video Optimizer Pack$4.99
  • Audio Transcoder Pack$4.99
  • All Features Bundle (50% Off)$9.99

Questions

Is OSpectrometer free?
OSpectrometer is free to download, with in-app purchases available.
Is BatchOptimize free?
BatchOptimize is free to download, with in-app purchases available.
Which has better reviews, OSpectrometer or BatchOptimize?
BatchOptimize is rated higher. OSpectrometer averages 2.0 out of 5 from 4 ratings, while BatchOptimize averages 5.0 from 1 ratings.
Do OSpectrometer or BatchOptimize have ads?
Neither OSpectrometer nor BatchOptimize shows ads.
Which is updated more often, OSpectrometer or BatchOptimize?
OSpectrometer ships an update every 2 weeks, and BatchOptimize weekly. Most recently, OSpectrometer was updated on September 10, 2026 and BatchOptimize on September 18, 2026.

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