CalliFactory vs Open Docs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalliFactory
Easily add custom calligraphy and filters to your photos. Create personalized messages and share them with friends and family. No internet or sign-up required, just use your gallery images.
- Edit photos
- Apply photo filters
- Change calligraphy color
- Share to social media
- Offline use
- No sign-up required
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Overlay calligraphy&text onto photos, videos, or GIFs, and share with loved ones. * Major Functions : - Calligraphy with image - Text with image - Change colors - Photo filters - Share Photo to SNS * Description : Overlay your own calligraphy and lettering onto beautiful backgrounds — photos, GIFs, or videos — and create heartfelt works of art. Use our curated emotional backgrounds or photos from your gallery to make something beautiful in seconds. Share what you create with others, and build new connections along the way :) With CalliFactory, put your warm feelings into words and share them with your family and friends.
Open Docs
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OpenDocs is a clean, local-first document viewer for the files you already have. Open PDFs, EPUB, MOBI, AZW3, Word, Excel, Markdown, text, CSV, JSON, XML, and RTF files from Files or other apps, then return to them with saved reading history. • Browse recent files by name, format, and favorites. • Read EPUB, MOBI, and AZW3 e-books with saved reading progress and adjustable text presentation. • Read text, Markdown, CSV, JSON, XML, and RTF in a focused viewer. • View PDFs with zoom and efficient page loading. • Preview DOCX and XLSX while keeping the native full-fidelity viewer path available. • Share documents or open them in another compatible app. • Choose light, dark, or system appearance, text size, wrapping, and resume position. OpenDocs does not require an account and includes no ads, analytics, or tracking SDKs. Document references and reading history stay on-device; document contents are not uploaded to OpenDocs or a remote conversion service. The optional Support the author screen loads a QR image from VietQR. Open your files simply, privately, and right when you need them.
Screenshots
Verdict
The clearest difference is update cadence: Open Docs at every 3 weeks against CalliFactory's every 3 months. CalliFactory's advantage is iOS requirement (15.0 vs 18.2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CalliFactory ships an update every 3 months, Open Docs every 3 weeks. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.
| Parameter | CalliFactory | Open Docs |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 28 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Sooyoung Choi | Ho Dung |
In-app purchases
CalliFactory
No in-app purchases
Open Docs
No in-app purchases
Questions
Is CalliFactory free?
Is Open Docs free?
Do CalliFactory or Open Docs have ads?
Which is updated more often, CalliFactory or Open Docs?
Other comparisons
