Rollei Action one vs ND Filter Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rollei Action one
Control your action camera remotely with this app. Review, download, edit, and share photos and videos directly from your phone without needing a computer. Supports various shooting modes like time-lapse and slow motion.
- Remote camera operation via WiFi
- Image and video review
- Direct download to phone
- In-app editing
- Time-lapse and slow motion modes
- Continuous shooting
- Loop recording
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The integrated WiFi function of your Action one allows you to operate it effortlessly via app. The app of the same name supports all the functions your camera is capable of. So you don't have to connect your camera to your computer and copy the photos after shooting, you can easily review the images via the app, download them from the camera and edit and use them directly on your phone. - Single images - Continuous shooting - Photo time-lapse - Video - Loop - Time Lapse - Slow Motion - Video + Photo
ND Filter Calc
This tool helps photographers calculate neutral density filter effects on their camera's exposure. It includes a countdown timer for long exposures, simplifying the process of achieving desired results.
- Neutral density filter calculation
- Exposure compensation
- Long exposure timer
- Countdown for shutter speeds > 3 seconds
- Simple interface
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A simple neutral density filter calculator for photographers. Has a count-down timer for shutter speeds of 3 seconds and above.
Screenshots
Verdict
The clearest difference is review sentiment: ND Filter Calc at 100% against Rollei Action one's 50%. ND Filter Calc also leads on update cadence (every 6 days vs every 8 months). Rollei Action one's advantage is iOS requirement (9.0 vs 15.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rollei Action one ships an update every 8 months, ND Filter Calc every 6 days. Both last shipped on November 3, 2026.
| Parameter | Rollei Action one | ND Filter Calc |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Update frequency | Every 8 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 209 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Rollei GmbH & Co. KG | Jerry Watson |
Customer experience
Rollei Action one
ND Filter Calc
In-app purchases
Rollei Action one
No in-app purchases
ND Filter Calc
No in-app purchases
Questions
Is Rollei Action one free?
Is ND Filter Calc free?
Do Rollei Action one or ND Filter Calc have ads?
Which is updated more often, Rollei Action one or ND Filter Calc?
Other comparisons
