Comparison

Fio Cam :Zero vs Puro

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

Head to head
About

Fio Cam :Zero

Capture authentic, film-like photos with classic tones and organic detail. This app offers two distinct modes: algorithm-free for natural shots and computational for enhanced imaging. It provides advanced color grading, digital filter emulations, and precise focus controls.

Highlights
  • Algorithm-free film photography mode
  • Computational photography mode
  • 22 classic film-based color grading presets
  • Four digital filter emulations
  • Three focusing modes (Autofocus, Manual, Macro)
  • 10-bit HEIF and RAW file support
  • Non-destructive RAW editing
Features
Read full description

Shoot Simply!  We championship "nature and zero", resist “overprocessing and complex edits”. One tap delivers high quality film-like photos with classic tones and organic detail. Fio elevates iPhone photography by countering overprocessed computational imaging, helping you reclaim the authentic joy of shooting. Fio provides two photography modes: • 「ZERO」 algorithm-free film photography mode | 2「PRD」 computational photography mode. In 「ZERO」 mode, you can capture true, natural, unsharpened photos with organic grain, authentic noise, rich light sensation, and film-like texture – all completely free from algorithms. Fio offers 22 classic film-based color grading presets to help you capture photos rich with humanistic tones and authentic emotions. This isn't superficial filtering - it's sensor-level color science. By analyzing real photo samples from vintage cameras and films, we've faithfully recreated their signature color science. Carefully crafted presets replicate iconic color styles from Fujifilm, Leica, Ricoh, Kodak, and more. Fio features four digital filter emulations: • Diffusion | Black Mist (HDF) | White Mist | Star Glow Stepless intensity control allows pixel-perfect effect tuning during capture. Fio offers three focusing modes: • Autofocus | Manual Focus | Macro Focus Seamlessly toggle between modes via the tactile scroll wheel, achieving optimal balance between speed and precision. Fio employs state-of-the-art imaging technology. Built on Apple's Metal framework and calibrated with CMOS sensor data, it delivers ultra-fast processing speeds and refined details through minimalistic operation. Supporting the Display P3 wide color gamut, it ensures higher color accuracy and richer tonal gradations. Photos can be saved in 10-bit HEIF format with combined HEIF+RAW storage, enabling lossless post-capture adjustments to white balance, exposure, tone, digital filters, and film simulations Fio Camera will keep getting better film-like photo features. Stay tuned for updates! When capturing Photos, Fio Camera also support the following features: - 5 Photo Paper Styles - Lightleaks Effects - Exposure control - White balance & Tint control - Lens switching / Preset focal lengths / Free focal control - Full-screen focus adjustment & Viewfinder frame focus adjustment - Camera Control button operation (iPhone 16 series only) - Volume button shutter - Composition grids - Built-in level - Timed preview shooting - Focus peaking - Aspect ratio adjustment - Photo formats: 10-bit HEIF, 8-bit JPG, RAW files - Color spaces: Display P3 wide gamut & sRGB - Location data storage - Album previews HEIF/JPG results or RAW files - Album reads EXIF metadata - Non-destructive RAW editing & reprocessing - Hardware specs display: Camera module and sensor parameters When sharing your photos on social media, use hashtags #Fio相机 #Fio #FioCam #FioCam. Our editors may select outstanding shots for our featured gallery. For questions or suggestions: 1. Tap "Feedback bugs and suggestions" in the settings. 2. Email us at Service@PhotonPoet.LTD

About

Puro

This app offers two distinct shooting modes: one that captures raw, unedited images directly from the sensor, and another that utilizes computational photography features. It provides extensive manual controls for ISO, shutter speed, white balance, and exposure, along with live metering and composition tools.

Highlights
  • Zero AI single-exposure RAW DNG capture
  • Standard mode with Apple's computational pipeline
  • DSLR-style manual controls (ISO, shutter, WB, EV)
  • Live metering with histogram and level indicator
  • Zero Studio for non-destructive RAW re-development
  • Dual output: RAW DNG and developed image
  • Grid overlays and aspect ratio control
Read full description

Finally, a camera that doesn't lie to you. Puro Camera was built on a single rule: capture what is there, deliver exactly that, stop. No invisible AI. No Smart HDR rewrites. No Deep Fusion surprises. Just two honest ways to shoot — and full manual control over both. — TWO MODES, ONE TAP APART — ZERO AI Single-exposure RAW DNG, straight from the sensor. No multi-frame stacking, no computational re-painting, no hidden noise reduction. What your iPhone's sensor recorded is exactly what lands on your roll — plus a developed image, every shot. STANDARD Apple's full computational pipeline when you want it. Smart HDR, Deep Fusion, ProRAW — all available, all under your control. — DSLR-STYLE MANUAL CONTROLS — • ISO 100–6400, locked or auto • Shutter 1/8000s to 1 second • White balance: manual Kelvin (2500K–9000K) + Daylight, Cloudy, Shade, Tungsten, Fluorescent presets • EV compensation ±3 stops, fine-grained • Tap-to-focus with AE/AF lock (long press) • Switch instantly between ultra-wide, wide, telephoto, and front cameras — LIVE METERING & COMPOSITION — • Real-time 12-bin histogram • Level indicator • Six grid overlays: Rule of Thirds, 4×4, Golden Ratio, Crosshair, Diagonal, Off • Aspect ratio control: 4:3, 16:9, 1:1 — ZERO STUDIO: RE-DEVELOP YOUR RAWs — Nailed the composition but blew the exposure? Open the DNG in Zero Studio and re-develop it at any exposure, ±3 stops, non-destructively. Your original RAW stays untouched. Pure single-exposure development — no AI, no fakery, no reshoot. — BUILT FOR HOW YOU SHOOT — • 48MP RAW DNG on supported iPhones • Dual output: every shot writes both a RAW DNG and a developed image • Volume buttons as a shutter trigger • Self-timer: 3, 5, 10 seconds • Silent shooting (where the law allows) • Full EXIF metadata viewer • Optional geotagging • Smart gallery: filter by RAW, by favorites, by today, by week • Siri shortcuts: "Shoot with Puro Camera" — FREE OR PRO, YOUR CHOICE — Free includes manual controls, the histogram, the level, and 15 Zero AI captures per month. Pro unlocks: • Unlimited Zero AI captures • 48MP RAW DNG • Every lens, every camera • Zero Studio re-development Subscribe monthly, yearly, or buy once for life — no recurring fee, no upsell, you own it. — REQUIREMENTS — iOS 18 or later. RAW DNG capture requires an iPhone with a Bayer sensor (iPhone 12 and newer). Apple ProRAW where supported by your device. Puro Camera. RAW truth. Manual control. Yours forever, if you choose. — MORE — Privacy Policy: https://purocamera.com/privacy Terms of Use: https://purocamera.com/terms

Screenshots

Fio Cam :Zero4 screens
Puro3 screens

Verdict

The call

The clearest difference is rating: Fio Cam :Zero at 4.9 against Puro's 1.0. Fio Cam :Zero also leads on ratings volume (24 vs 1) and iOS requirement (16.0 vs 18.0). 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. Fio Cam :Zero sells 3 in-app purchases, starting at $3.99 per year and Puro sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fio Cam :Zero holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Fio Cam :Zero has 24 ratings behind it against 1, so its average is the more settled of the two.

Scorecard3 real differences · 7 level
Fio Cam :Zero versus Puro: the parameters behind the verdict, then further details
ParameterFio Cam :ZeroPuro
PriceFreeFree
Rating4.9 (24 ratings) — better1.0 (1 ratings)
Positive reviews88.2% of reviews—
Number of ratings24 — better1
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size161 MB5 MB
Age rating4+4+
DeveloperPhotonPoet Co., LtdAnderson Marques Oliveira

In-app purchases

3 purchases

Fio Cam :Zero

Subscriptions1
  • Annual Fio PRO$3.991 Year
One-time2
  • Buy Out for EARLY BIRD$4.99
  • Buy Out$9.99
3 purchases

Puro

Subscriptions2
  • Puro Premium Monthly7 Days trial$1.991 Month
  • Puro Premium Yearly7 Days trial$12.991 Year
One-time1
  • Puro Premium Lifetime$29.99

Questions

Is Fio Cam :Zero free?
Fio Cam :Zero is free to download, with in-app purchases available.
Is Puro free?
Puro is free to download, with in-app purchases available.
Which has better reviews, Fio Cam :Zero or Puro?
Fio Cam :Zero is rated higher. Fio Cam :Zero averages 4.9 out of 5 from 24 ratings, while Puro averages 1.0 from 1 ratings.
Do Fio Cam :Zero or Puro have ads?
Neither Fio Cam :Zero nor Puro shows ads.

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