Comparison

RLD Viewer vs OneOpen

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

RLD Viewer

Read full description

The RLD Viewer is a companion app to the RLD Database Platform.

About

OneOpen

Features
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OneOpen opens the files you receive from Files, Mail, and other apps. Everyday viewing stays free and local. FREE FILE VIEWING Open HTML and ZIP website packages as isolated mini apps. Read Markdown, PDF, Office and iWork documents, common images, audio, video, JSON, YAML, XML, CSV, source code, and text. Search and edit common text formats in a separate copy; your original remains untouched. Recents and widgets put your files within reach. ADVANCED FORMATS Advanced Access unlocks specialized previews: 3D models, RAW and design images, fonts, certificates, property lists, email, subtitles, contacts, calendars, specialist archives and data, CAD and circuit files, and the binary inspector. Choose an annual subscription or a one-time lifetime purchase; both unlock the same features. PRIVACY AND HTML SAFETY OneOpen has no account, ads, analytics, or document uploads. Non-HTML previews stay offline. Imported HTML and ZIP websites may run JavaScript and connect to HTTPS/WSS servers in an isolated WebKit store. Switch to offline mode or Safe Preview at any time; HTTP, embedded frames, unexpected navigation, and access to other local files remain blocked. Webpage code may contact third-party servers when you allow network access. Terms of Use: https://oneapps.studio/terms Privacy Policy: https://oneapps.studio/privacy Advanced Access includes STEP/STP, IGES, BREP, DXF, STL, OBJ and PLY geometry previews. Unsupported drawing entities are disclosed; external OBJ materials and textures are not loaded. This is a viewer, without CAD editing or engineering measurements.

Screenshots

RLD Viewer4 screens
OneOpen4 screens

Verdict

The call

The clearest difference is update cadence: OneOpen at every 9 days against RLD Viewer's every 13 months. RLD Viewer's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RLD Viewer ships an update every 13 months, OneOpen every 9 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard2 real differences ยท 4 level
RLD Viewer versus OneOpen: the parameters behind the verdict, then further details
ParameterRLD ViewerOneOpen
PriceFreeFree
Update frequencyEvery 13 monthsEvery 9 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size0 MB21 MB
Age rating4+4+
DeveloperReal Life Data, Inc.Freedom Dimension (shenzhen) Technology Co., Ltd

In-app purchases

None

RLD Viewer

No in-app purchases

None

OneOpen

No in-app purchases

Questions

Is RLD Viewer free?
RLD Viewer is free to download, with no in-app purchases.
Is OneOpen free?
OneOpen is free to download, with no in-app purchases.
Do RLD Viewer or OneOpen have ads?
Neither RLD Viewer nor OneOpen shows ads.
Which is updated more often, RLD Viewer or OneOpen?
RLD Viewer ships an update every 13 months, and OneOpen every 9 days. Most recently, RLD Viewer was updated on October 7, 2026 and OneOpen on October 13, 2026.

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