CalibratorVS vs Lento
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalibratorVS
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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.
Lento
Create stunning long exposure photos in real-time without needing special filters. Achieve silky smooth water, capture light trails, and remove moving objects from your shots. Offers manual controls and professional export options.
- Real-time long exposure stacking
- Silky smooth water and cloud effects
- Light trail capture
- Ghost removal for moving objects
- Manual camera controls (ISO, focus, exposure)
- RAW DNG and HEIF export
- Live exposure preview
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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 fades them out. The static scene stays, and people who keep moving disappear. 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 is optional (off by default) and saved in HEIF/JPEG only. REAL-TIME PREVIEW Watch the exposure build live, so you know when to stop. 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, exposures up to 60s plus Bulb, 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
Verdict
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 6 days vs every 22 months). On price and ads 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
Both are free to download. Lento sells 2 in-app purchases, starting at $14.99 per year. CalibratorVS asks for nothing beyond the download.
CalibratorVS ships an update every 22 months, Lento every 6 days. The most recent releases landed on November 13, 2026 and November 15, 2026 respectively.
| Parameter | CalibratorVS | Lento |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 22 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Qvision, Departamento de Oftalmología | Anh Phong |
In-app purchases
CalibratorVS
No in-app purchases
Lento
- Lento Pro7 Days trial$14.991 Year
- Lento Pro$29.99
