Capption vs. ReBokeh
ReBokeh is a visual experience inclusion app—a customizable live video filter that helps low-vision users enhance what they see in real time. We took it into a real museum with real low-vision testers and came away with a clear picture of what it does, what it doesn't, and where Capption fits.
At a glance
Visual magnification app—ReBokeh
ReBokeh is a digital magnifying glass for iOS—a customizable live video filter that helps low-vision users see better in real time. It enhances what visitors can already see. It is iOS-only, requires registration, and offers free and subscription tiers with geofenced institutional access.
Accessible exhibit information—Capption
Capption delivers exhibit content in multiple formats to multiple visitor groups—any phone-using visitor, regardless of vision, language, mobility, or device. One NFC tap surfaces accessible, screen-reader-ready, translatable content. No account, no subscription, no setup required.
Zooming in on a problem
As someone living with oculocutaneous albinism, Rebecca Rosenberg built the tool she wished she'd had. Her insight is one we've also repeatedly emphasized: visual disability isn't binary—blind vs. sighted. 90% of visually-impaired people retain some level of functional sight. For most, assistance means enhancement, not replacement.
Smartphone cameras have made four major leaps in about ten years:
- Croppy quality (2000s–mid 2010s). Single fixed wide-angle lens. "Zoom" was just cropping and stretching.
- Multiple lenses (mid 2010s). Dedicated telephoto lenses (iPhone 7 Plus) enabled real optical zoom.
- Periscope depth (late 2010s). Folded lens technology bent incoming light 90 degrees, enabling true 5–10× zoom in the Samsung Galaxy S20 Ultra and iPhone 15 Pro Max.
- Computational zoom (present). AI combined with 200-megapixel sensors synthesizes zoom with 50× and beyond—filling in missing details, merging frames, cropping without loss.
All this capability also enabled increased accessibility for people with visual impairments. ReBokeh exists because of it.
ReBokeh: enhancing existing vision
ReBokeh acts as a digital magnifying glass—a customizable live video filter. Users enhance their visual capability in real time by adjusting: color inversion, contrast, exposure, image freeze, and zoom stabilization.
Like Capption, ReBokeh is discrete and portable and does not require institutions to make special accommodations for every visually-impaired person every time they arrive. That's a meaningful design principle—one we share.
The ReBokeh museum trial
Capption staff and our low-vision friends tested ReBokeh on a real museum visit. Here's what we found.
In theory (3 steps)
- Open the ReBokeh app
- ReBokeh grabs camera access and applies its improvements
- Adjust the live image to suit you
In reality
- Open the Apple App Store (iOS only—no Android version)
- Search "ReBokeh"
- Download the app
- Register an account
- Choose between paid (subscription) and free tiers
- If physically present at a partner site, the geofence may unlock premium features
- If purchasing, navigate standard iOS transaction and security prompts
Once through these steps—in our group's case, standing in the museum lobby—testers were genuinely rewarded. They took an immediate liking to: running the flashlight with the camera on, sliding anywhere on screen to zoom in, freezing the frame, and saving their adjustment presets for next time.
For a typical museum visit, our test group felt the free version sufficed. Saving altered images to the camera roll requires the paid version.
First-use challenges
- Slow activation. Requires learning and configuring ahead of time. Using it on the fly in the museum was undignified.
- Requires some acuity. Users' vision has to be better than bad just to set ReBokeh up. Buttons spread across the screen presented a hard tap target for testers with limited visual fields.
- Navigation and mobility burden. Reading through ReBokeh requires a direct line of sight in a narrow field when zoomed. Other visitors easily interrupted this, throwing testers off target.
- Prompt annoyance. "If that doesn't end soon I'd delete it"—ReBokeh prompts the user before they can use it (newsletter suggestions, notification requests).
- Technologically intrusive. ReBokeh's appetite for permissions bothered our most technical tester. "Why does a magnifying glass app want my location?"
- Low-light barrier. Performance drops noticeably when light dips below some unmeasured threshold.
- Stabilization fatigue. Holding a phone steady enough for prolonged reading causes fatigue—a real issue for older or mobility-challenged visitors.
Would they use ReBokeh again?
- Two testers were shut out—Android phones. No access at all.
- One tester couldn't use it—she is fully blind; ReBokeh serves a different need.
- Two testers might use it—both habitually carry magnifying glasses, which serve a similar purpose at lower friction.
- One tester will keep it installed—ReBokeh is "hard better" than the magnifying app he already had, and he'll use it situationally.
Our testers found ReBokeh a great use of mobile technology as an assistive device. But ReBokeh diminishes its own core utility in its attempts to be feature-rich and enforce its business model. The Android wall alone cuts off a significant share of the visitors who need it most.
What Capption gives guests that ReBokeh doesn't
- Learn in any language. Capption translates content into 136 languages—machine-generated, human-edited, or fully human-authored.
- Accessibility with any mobile device. Any NFC-capable Android and any iPhone since 2016. ReBokeh is iOS only.
- Zero searching. One NFC tap activates the specific exhibit content requested from any other open app. No searching, no focusing, no crashing.
- Inherited adaptation. Capption leverages a user's pre-existing, tailored accessibility settings automatically.
- Screen reader support. Built for VoiceOver and TalkBack from the ground up—not easy or fast with a shaky camera.
- Multimedia content. Institutions can embed images, audio, and video. Revisions roll out automatically—no reprints.
- Convenience, not annoyance. Capption has no in-app pop-ups. No newsletter prompts, no notification requests, no permission nags.
- No location tracking or transactions. No geofencing, no subscription prompts, no location permissions required.
- Full experiential control. Rather than reading labels through a phone with a direct line of sight, Capption lets visitors carry content to a place of comfort.
- Exhibit history. One tap gives Capption content to a visitor permanently—they can revisit any exhibit they tapped, anytime.
They work together. One tester quickly found that she could examine an exhibit with ReBokeh and learn about it with Capption—physically without blocking anyone. She wouldn't feel like she was making her disability someone else's problem. In practice, each app complements the other.
Pricing
ReBokeh's institutional pricing isn't public. What we can speak to is its mechanism: ReBokeh uses geofencing to unlock premium features for users who enter a participating institution's boundary. This makes for an awkward usability challenge—visitors downloading and configuring ReBokeh on site hit permissions prompts asking why a magnifying glass needs their location.
Capption's pricing starts small and increases based on institution visitor volume. No geofencing. No permission theater.
How to decide
There's only one axis of comparison here: reach.
- ReBokeh: Do you want to help iPhone-equipped, low-vision visitors see better?
- Capption: Do you want to help any phone-using low-vision, non-native-speaking, socially-anxious, mobility-impaired, or senior visitor—without software access hurdles?
If option two appeals more, connect with us.
Ready to make your exhibits truly accessible?
Magnifiers will undoubtedly help some visitors—but not all. Capption makes life easier for everyone, and measurably better for many.