TDF Calc vs ESTRO 2026
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TDF Calc
This app calculates the biologically effective dose (BED) for radiation therapy fractionation regimens. It allows for comparisons of different treatment schedules and helps determine dose per fraction based on desired treatment duration.
- Linear-quadratic (LQ) method implementation
- Biologically effective dose (BED) calculation
- External beam radiation therapy (EBRT) fractionation
- Low dose rate (LDR) brachytherapy
- Permanent implant brachytherapy
- Dose per fraction calculation
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TDFCalc is an application which implements the linear-quadratic (LQ) method for comparing the biologically effective dose (BED) of external beam radiation therapy (EBRT) fractionation regimens as well as low dose rate (LDR) and permanent implant brachytherapy treatments. It calculates BED for a given alpha/beta ratio as a function of the dose per fraction and number of fractions for EBRT, and initial dose rate for brachytherapy. For a predetermined BED, the app solves the quadratic equation to calculate dose per fraction as a function of the number of fractions desired. This enables quick comparison of modified fractionation regimens (e.g. hypofractionation or compensating for missing treatment fractions) vs a conventional and/or originally intended regimen.
ESTRO 2026
Access the full program, engage during sessions, and view posters for a leading radiation oncology congress. This app facilitates learning, collaboration, and connection within the medical community.
- Access congress program
- Interact during sessions
- Watch session replays
- View posters
- Connect with community
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It is my great pleasure to invite you to ESTRO 2026, taking place in Stockholm, Sweden from 15 to 19 May and to introduce this year’s congress theme: “Innovating Radiation Oncology, Together”. The theme will be reflected throughout the programme. Exciting keynote speakers will surprise us, more patients than ever will provide their perspectives and reflections, and interaction between chairs, speakers and the participants will be further increased, to maximise the learning experience.
Screenshots
Verdict
The clearest difference is review sentiment: TDF Calc at 100% against ESTRO 2026's 0%. TDF Calc also leads on iOS requirement (13.2 vs 15.5). ESTRO 2026's advantage is update cadence (weekly vs every 67 months). 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.
TDF Calc ships an update every 67 months, ESTRO 2026 weekly. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.
| Parameter | TDF Calc | ESTRO 2026 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 67 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.2 — better | 15.5 |
| Further details — not scored | ||
| Size | 2 MB | 100 MB |
| Age rating | 4+ | 17+ |
| Developer | Eye Physics | CYIM |
Customer experience
TDF Calc
ESTRO 2026
In-app purchases
TDF Calc
No in-app purchases
ESTRO 2026
No in-app purchases
