Comparison

CalibratorVS vs Lento

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

Head to head
About

CalibratorVS

Read full description

This application has been designed to be used with a Colorimeter or a Spectroradiometer. It is used for: (1) measuring gamma curves from RGB channels. This is a professional app for users of other apps from www.test-eye.com. We do not recommend to download this App if you have not previously contacted with www.test.eye.com and you know the specific use.

About

Lento

Capture stunning long exposures and light trails in real-time without special equipment. Achieve silky smooth water, eliminate moving objects, and gain precise manual control over your shots. Export in high-quality formats like RAW DNG.

Highlights
  • Real-time long exposure stacking
  • Light trail capture
  • Automatic ghost removal
  • Manual camera controls (ISO, focus, exposure)
  • RAW DNG and HEIF export
  • Live preview of exposure build
Features
Read full description

Lento stacks camera frames in real-time to create long exposures on iPhone. Silky waterfalls, streaking car lights, empty landmarks. No ND filter, no guesswork. SMOOTH Blur water and clouds into silk. Point at a waterfall, tap the shutter, and watch it smooth out frame by frame. LIGHT TRAIL Capture every streak of light. Car headlights, neon signs, star trails - the brightest pixel wins. GHOST REMOVE Tourists keep walking through your shot? Lento removes them. The static scene stays, moving objects vanish. MANUAL CONTROLS ISO, focus, exposure duration, self-timer. Live readouts update as you shoot. Built for photographers who want precision, not presets. PRO EXPORT RAW DNG (16-bit), HEIF, or JPEG. 8 megapixels with EXIF metadata - ISO, aperture, focal length, GPS coordinates. REAL-TIME PREVIEW Watch the exposure build live. What you see on screen is what you get in the file. BUILT FOR IPHONE GPU-accelerated. No lag. No stutter. Dark interface that stays out of your way. Free: Smooth + Light Trail, HEIF, up to 5s. One watermarked export in total. Pro: All modes, RAW DNG, manual controls, unlimited duration, no watermark, unlimited exports. Privacy Policy: https://github.com/heocoi/privacy-policy/blob/main/lento.md Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CalibratorVS3 screens
Lento4 screens

Verdict

The call

The clearest difference is in-app purchases: CalibratorVS at none against Lento's 2. CalibratorVS also leads on device support (3 vs 1) and iOS requirement (11.3 vs 17.0). Lento's advantage is update cadence (every 11 days vs every 22 months). On price and ads there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Lento sells 2 in-app purchases, starting at $9.99 per year. CalibratorVS asks for nothing beyond the download.

UpkeepUpdate frequency

CalibratorVS ships an update every 22 months, Lento every 11 days. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard4 real differences Β· 3 level
CalibratorVS versus Lento: the parameters behind the verdict, then further details
ParameterCalibratorVSLento
PriceFreeFree
Update frequencyEvery 22 monthsEvery 11 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
Monetizationβ€”Freemium
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS11.3 β€” better17.0
Further details β€” not scored
Size9 MB14 MB
Age rating4+4+
DeveloperQvision, Departamento de OftalmologΓ­aAnh Phong

In-app purchases

None

CalibratorVS

No in-app purchases

2 purchases

Lento

Subscriptions1
  • Lento Pro7 Days trial$9.991 Year
One-time1
  • Lento Pro$29.99

Questions

Is CalibratorVS free?
CalibratorVS is free to download, with no in-app purchases.
Is Lento free?
Lento is free to download, with in-app purchases available.
Do CalibratorVS or Lento have ads?
Neither CalibratorVS nor Lento shows ads.
Which is updated more often, CalibratorVS or Lento?
CalibratorVS ships an update every 22 months, and Lento every 11 days. Most recently, CalibratorVS was updated on October 19, 2026 and Lento on October 7, 2026.

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