Cullen Chart Digital vs EP Recorder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cullen Chart Digital
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This app is based on a previously validated paper chart (the Cullen chart) and used to assess visual fields. It is intended for use by a trained clinician and has been designed specifically for pituitary and parasellar pathology. The chart tests the central 25 degrees of the visual field. 30 years ago, a paper chart was developed in Edinburgh by Cullen et al. and validated as a swift, supplementary method for perimetric evaluation of visual fields. We have re-developed this concept in digital form (on smartphone screen) and assessed its sensitivity and specificity in detecting visual field loss, by comparison with formal machine-based perimetry. DISCLAIMER: For use by clinicians only. This app does not provide any medical advice. Support & Contact: https://www.eosurgical.com/pages/contact-us Read more about our terms and conditions and privacy policy here - https://www.eosurgical.com/pages/terms-and-conditions
EP Recorder
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Use in combination with Eye Precision Animations Automatically stop and start recording together with the eye movement animation Set light level and frame rate View a preview before starting recording to make sure the eyes are clearly visible Works with the EP Animations app, or with the related website
Screenshots
Verdict
The clearest difference is price: Cullen Chart Digital at Free against EP Recorder's $11.99. Cullen Chart Digital also leads on iOS requirement (13.0 vs 17.6). EP Recorder's advantage is update cadence (monthly vs every 5 months). On ads, in-app purchases and device support 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
Cullen Chart Digital is free to download; EP Recorder costs $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Cullen Chart Digital ships an update every 5 months, EP Recorder monthly. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.
| Parameter | Cullen Chart Digital | EP Recorder |
|---|---|---|
| Price | Free — better | $11.99 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 32 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Hughes | Robert Correll |
In-app purchases
Cullen Chart Digital
No in-app purchases
EP Recorder
No in-app purchases
Questions
Is Cullen Chart Digital free?
Is EP Recorder free?
Do Cullen Chart Digital or EP Recorder have ads?
Which is updated more often, Cullen Chart Digital or EP Recorder?
Other comparisons
