X vs Fujifilm Exposure Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
X
Calculate radiography shot times for industrial radiographers using radioactive materials. Quickly determine exposure time by inputting curies, steel thickness, and source-to-film distance.
- Calculate radiography shot times
- Supports Iridium and Cobalt sources
- Input curies, thickness, and distance
- Field-tested for accuracy
- Replaces slide rule calculations
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Updated for iOS10. Only Useful for Industrial Radiographers! This is an application to replace the aggravating usage of slide rules to calculate radiography shot times. It is applicable to Industrial Radiographers working with radioactive materials (not x-ray machines). It works with both Iridium and Cobalt sources. This app has been tested in the field with working radiography crews and the response has be great. Just set the number of curies, the thickness of the steel (inches), and the source to film distance (in inches). Hit the calculate button and you will have the exposure time.
Fujifilm Exposure Calculator
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Exposure time calculator for use with Fujifilm DynamIx HR2 systems for radiographic inspection of corrosion and deposits in pipes by Gamma rays in accordance with EN 16407-1/2.
Screenshots
Verdict
The clearest difference is iOS requirement: X at 8.0 against Fujifilm Exposure Calculator's 16.6. On price, update cadence, ads and in-app purchases 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.
X ships an update every 13 months, Fujifilm Exposure Calculator every 24 months. The most recent releases landed on November 1, 2026 and October 6, 2026 respectively.
| Parameter | X | Fujifilm Exposure Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (9 ratings) — better | — |
| Positive reviews | 75.8% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 13 months — better | Every 24 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 0 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Lance Henderson | nautavis |
Bugs and requests
X
Reported bugs
5 issues- Crashes if 2 or more fields have a period in it on iOS 10
- App stopped working after recent iOS update
- Shot times are way off when shooting large pipes
- App does not work, inconsistent results with different units or conversions
- Exposure time not correct
Requested features
22 requests- Save recent calculations
- Memory feature for recent calculations
- Add feature for double/single wall application
- Show density climbing on countdown
- Add wire type selection
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- Add option for film type (e.g., 50 or 80)
- Determine restricted/radiation areas
- Add timer
- Add material type
- Add R-factor calculator (film type/grade - density)
- Add Film Load (double, triple, etc.)
- Conversion to mm
- Info on film factors or calculation basis
- Option for stainless steel or carbon steel
- Metric input support
- Option for metric measurements (mm)
- Option to choose density and film type
- Input pipe size and schedule
- Barricade calculator
- App for film developing
- Add more sources
- Email address for developer
Fujifilm Exposure Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
X
No in-app purchases
Fujifilm Exposure Calculator
No in-app purchases
Questions
Is X free?
Is Fujifilm Exposure Calculator free?
Do X or Fujifilm Exposure Calculator have ads?
Which is updated more often, X or Fujifilm Exposure Calculator?
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