FastStone Image Viewer vs ApolloOne

FastStone Image Viewer9.1Visit ApolloOne7.4Visit

Higher score FastStone Image Viewer #2 in Photo Viewer Software 9.1/10 Free plan Free plan✓ 5 of 5 features Visit FastStone

vs

ApolloOne #13 in Photo Viewer Software 7.4/10 Free plan · 14-day trial Free planFree trial✓ 5 of 5 features Visit ApolloOne

• FastStone Image Viewer fits best

  Windows users wanting a free all-round viewer

• ApolloOne fits best

  Mac photographers needing advanced metadata tools

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Side by side

Feature	FastStone Image Viewer 9.1/10 Visit ↗	ApolloOne 7.4/10 Visit ↗
At a glance
Editor score	9.1	7.4
Ranking	#2 in Photo Viewer Software	#13 in Photo Viewer Software
Best for	Windows users wanting a free all-round viewer	Mac photographers needing advanced metadata tools
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	—
Free plan	✓	✓
Free trial	—	14 days
Deployment	Desktop	Desktop
Platforms	Windows	macOS
Support	Email, Docs	Docs
Built for	Solo, Small business, Enterprise	Solo, Small business, Mid-market
Features FastStone Image Viewer 5/5 · ApolloOne 5/5
RAW image support	✓	✓
Side-by-side compare	✓	✓
Contact sheets	✓	✓
Color management	✓	✓
Metadata viewer	✓	✓
Specs
Supported platforms	Windows	macOS
Our review
Pros	Supports camera RAW formats and EXIF metadata viewing Compares up to four images and creates configurable contact sheets Adds batch conversion, renaming, scanning, editing, slideshows, and portability	Detailed EXIF, XMP/IPTC, Makernotes, GPS, and AI metadata tools Split View, contact sheets, RAW viewing, and side-by-side comparison Batch renaming, resizing, conversion, export, and memory-card import
Cons	Commercial use requires a paid lifetime license Available for Windows rather than multiple desktop platforms Its broad toolset may be more than casual viewers need	Available only for macOS Not designed as a proprietary photo catalog manager Pro subscription pricing appears with two listed 1-year prices
Our verdict	FastStone Image Viewer is a Windows desktop application for browsing, viewing, organizing, comparing, editing, converting, and presenting digital images. It suits Windows users who want more than a basic viewer, particularly photographers… Read the review →	ApolloOne is a macOS photo and video viewer for photographers who want to browse folders, inspect and edit metadata, review RAW files, cull images, and make practical adjustments without importing files into a proprietary catalog. Its… Read the review →

Strengths and trade-offs

• FastStone Image Viewer — where it wins

  • Supports camera RAW formats and EXIF metadata viewing
  • Compares up to four images and creates configurable contact sheets
  • Adds batch conversion, renaming, scanning, editing, slideshows, and portability

  Where it doesn't

  • Commercial use requires a paid lifetime license
  • Available for Windows rather than multiple desktop platforms
  • Its broad toolset may be more than casual viewers need

• ApolloOne — where it wins

  • Detailed EXIF, XMP/IPTC, Makernotes, GPS, and AI metadata tools
  • Split View, contact sheets, RAW viewing, and side-by-side comparison
  • Batch renaming, resizing, conversion, export, and memory-card import

  Where it doesn't

  • Available only for macOS
  • Not designed as a proprietary photo catalog manager
  • Pro subscription pricing appears with two listed 1-year prices

• FastStone Image Viewer9.1/10 · Free plan

  A free Windows viewer with RAW support, comparison, batch tools, editing, and scanning.

  Visit FastStoneFull verdict →
• ApolloOne7.4/10 · Free plan · 14-day trial

  A focused macOS viewer for RAW browsing, metadata work, culling, and batch processing.

  Visit ApolloOneFull verdict →