f/ Tools vs Nebulis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
f/ Tools
This photography tool offers a suite of calculators for concepts like depth of field, print resolution, and flash exposure. It helps users visually grasp complex photographic principles with integrated help and a glossary. The app also includes a camera bag feature with lens limits.
- Graphic depth of field calculator
- Graphic Airy disc calculator
- Graphic format calculator
- Motion freeze calculator
- Graphic blur size calculator
- Graphic flash exposure calculator
- Camera bag with lens limits
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f/Tools is a set of tools for digital and analog photography. Explore sensor sharpness, depth of field, print resolution, bokeh size, flash exposure, and more — all in one place. Designed to help you visually understand complex photographic concepts, with built-in help and a glossary. Features: • Graphic depth of field calculator • Graphic Airy disc calculator • Graphic format (scene/print) calculator • Motion freeze calculator • Graphic blur size calculator • Graphic flash exposure calculator • Camera bag with lens limits • Quick setup with popular camera brands included
Nebulis
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Nebulis is the companion app for your Nebulis astrophotography server. Browse your entire deep-sky image library from your iPhone or iPad, plan your next observation session, and dive deep into the objects you've captured. Your Library, Your Way Browse hundreds of images organized by object, date, and type. Filter by galaxies, nebulae, or star clusters. Mark favorites, swipe through full-screen previews with pinch-to-zoom, and edit your captures right on your device. Plan Your Next Session The built-in planner shows you what's worth imaging tonight based on your location — with altitude charts, object details, and a curated "best tonight" list so you spend less time planning and more time imaging. Sky Forecast Check local sky conditions before you haul out the gear. Seeing and transparency forecasts help you decide if it's worth setting up. Explore Without a Server New to Nebulis? Browse a curated sample gallery of deep-sky objects to see what the app can do before connecting your own library. Privacy First Nebulis connects directly to your own server on your local network. Requires a Nebulis server (free) running on your local network or accessible via your home connection. Get Nebulis here -> https://nebulis.app
Screenshots
Verdict
The clearest difference is price: f/ Tools at $3.99 against Nebulis's $4.99. f/ Tools also leads on iOS requirement (15.5 vs 17.0). On update cadence, ads, in-app purchases and device support 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
f/ Tools costs $3.99 and Nebulis $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on October 1, 2026.
| Parameter | f/ Tools | Nebulis |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 3.7 (6 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple TV — better |
| Requires iOS | 15.5 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | David Quiles | Brentley Catoe |
In-app purchases
f/ Tools
No in-app purchases
Nebulis
No in-app purchases
