Head-to-head · Photo Viewer Software
ImageGlass vs ApolloOne
ImageGlass leads on 0 checks, ApolloOne on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreImageGlass · 7.6/10
- Free planboth
- Free trialboth
- Most featuresApolloOne · 5 of 5
ImageGlass scores higher on our rubric for photo viewer software: 7.6 against 7.4 out of 10; our editors rank them #11 and #13.
ApolloOne offers side-by-side compare; ImageGlass doesn't.
ImageGlass is the better fit for free multi-platform format coverage. ApolloOne is the better fit for mac photographers needing advanced metadata tools.
- ImageGlass fits best
Free multi-platform format coverage
- ApolloOne fits best
Mac photographers needing advanced metadata tools
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Side by side
| Feature | ImageGlass 7.6/10 Visit ↗ | ApolloOne 7.4/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.6 | 7.4 |
| Ranking | #11 in Photo Viewer Software | #13 in Photo Viewer Software |
| Best for | Free multi-platform format coverage | Mac photographers needing advanced metadata tools |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | $99/seat/yr | — |
| Free plan | ✓ | ✓ |
| Free trial | 14 days | 14 days |
| Free trial length | 14 days | 14 days |
| Deployment | Desktop | Desktop |
| Platforms | Windows, macOS, Linux | macOS |
| Support | Email, Community, Docs, Tickets | Docs |
| Integrations | 1 integrations | 6 integrations |
| Built for | Solo, Small business, Mid-market, Enterprise | Solo, Small business, Mid-market |
| Features ImageGlass 3/5 · ApolloOne 5/5 | ||
| RAW image support | ✓ | ✓ |
| Side-by-side compare | — | ✓ (best) |
| Contact sheets | Not checked yet | ✓ (best) |
| Color management | ✓ | ✓ |
| Metadata viewer | ✓ | ✓ |
| Specs | ||
| Supported platforms | Windows, macOS, Linux | macOS |
| Our review | ||
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| Cons |
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| Our verdict | ImageGlass is a desktop image viewer for people who need broad file-format coverage across Windows, macOS, and Linux. It opens more than 90 formats, including SVG, HEIC, WEBP, animated images, HDR formats, and camera RAW files. The feature… 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
ImageGlass — where it wins
- Opens more than 90 formats, including RAW, SVG, HEIC, and WEBP
- Free Classic plan is open source under GPLv3
- Color management, metadata viewing, plugins, and basic editing tools
Where it doesn't
- Side-by-side A/B comparison is still in development
- Basic HDR support may not meet advanced imaging workflows
- Pro purchases are final and non-refundable
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
- ImageGlass7.6/10 · Free plan · 14-day trial
A capable free viewer for broad format coverage across Windows, macOS, and Linux.
Visit ImageGlassFull 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 →
All photo viewer software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update