Lumin vs Forma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lumin
Edit, share, and collaborate on PDF documents in the cloud. This app offers a suite of tools for annotating, organizing, and signing PDFs, with seamless integration for cloud storage and real-time collaboration.
- Seamless document management
- Cloud integration and auto-save
- Versatile editing and annotation tools
- Document organization and conversion
- Pre-designed templates
- Real-time collaboration
- eSignatures and form filling
- Scanning to PDF
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Lumin for iOS allows you to edit and sync to your Google documents in seconds. Collaborate with colleagues in real-time with a diverse set of editing tools. Lumin auto-saves your changes and syncs them to all your devices. Connect your Google account and stay on top of your documents. You can effortlessly view and share files with anybody via email or shareable links. TRUSTED BY MILLIONS Join over 100 million Lumin users worldwide who use our app to edit, share, and collaborate in the cloud. From note-taking and project management to client onboarding and legal document review, Lumin empowers you across industries. KEY FEATURES - Seamless document management: Import from your favorite storage (Dropbox, Google Drive, OneDrive), edit, and share PDFs effortlessly. - Cloud integration: Automatically save changes and sync across devices. - Versatile editing tools: Highlight, annotate, draw on PDFs and more. - Document organization: Organize, extract pages, merge files, convert to/from PDF,... - Pre-designed templates: Choose from various templates for various purposes and industries, such as real estate, education, job application, etc. - Collaboration: Share files and receive real-time notifications. - eSignatures: Sign and fill out forms with ease. - Scanning: Convert paper documents into portable PDFs. LUMIN IN THE REVIEWS “I use Lumin to mark up PDF drawings and send them to my subcontractors. In my role, time is of the essence. Lumin provides me with a tool to make collaboration and feedback easy.” – Construction site manager, US “We have been using Lumin for a little over two years, and it's been amazing. Using Lumin on-the-go and in-office allows us better turnaround time for our patients' care.” – Director of Services and Operations, US “It s very useful and handful for studying and I feel like they make good improvements with each upgrade. I use it for studying, it's cool that I can connect my university Google Drive to the Lumin account and I can edit, draw, write, highlight and add comments and they always get saved.” – Individual user “Too loud. You can open and edit texts from any device, everything is saved automatically, quickly. Access is very fast. The options for editing documents are diverse.” – Individual user Terms & conditions: https://www.luminpdf.com/terms-of-use/
Forma
This AI-powered app allows users to edit, fill, sign, scan, and convert PDF documents. It offers features like text editing, form filling, e-signatures, OCR scanning, and file conversion. An AI assistant can summarize, rewrite, or generate content, and users can create invoices and resumes.
- AI-powered PDF editing
- Fill and e-sign forms
- Built-in OCR scanner
- Convert PDFs to various formats
- AI assistant for content generation
- Create and send invoices
- Resume builder
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Meet Forma—your AI-powered PDF editor that lets you fill, sign, scan, and edit documents. Contracts to sign, forms to fill, files to convert—and no laptop in sight. With Forma, all you need is your phone: edit text, fill out forms, add your signature, scan paper, and convert between formats without disrupting the layout. When a document needs more than editing—a summary, a rewrite, a draft from scratch—the built-in AI assistant will take care of that too. From the creators of iScanner, trusted by 145M+ users. With Forma, you get: • A clean interface that keeps PDF work intuitive. • A built-in scanner with OCR that turns paper into searchable, editable files. • An AI assistant that summarizes, catches mistakes, and generates content. • Secure cloud storage synced across iPhone, iPad, and web. Here's what that looks like: EDIT PDFs WITHOUT LOSING THE LAYOUT Need to update a figure in a proposal or fix a heading before a deadline? Tap any text to edit it—Forma auto-matches fonts so the document looks untouched. You can also highlight sections, add notes, insert images, and split or merge files. VIBE EDIT PDFs WITH A TEXT OR VOICE PROMPT Instead of manually editing PDFs, let the app do the work. Tell Vibe Edit what you want to change by typing a message or recording a voice command, and get your updated PDF right away. FILL & SIGN FORMS WITHOUT PRINTING Tax form, lease, job application—complete any form right in the app. With autofill, you can speed through repetitive fields. Draw or type your electronic signature once, save it, and apply it whenever you need. TURN PAPER DOCS INTO FILES Not every document starts digital. Unlike most PDF editors, Forma has a full scanner built in—point your camera at an agreement, a receipt, or a note, and it becomes a clean, searchable PDF with OCR. CONVERT FILES BETWEEN FORMATS Client needs your PDF as a Word document? Professor wants the assignment in a different format? Convert seamlessly between PDF, Word, Excel, PowerPoint, JPG, and TXT in both directions. LET AI DO THE HEAVY LIFTING Long contract before a meeting? Email that needs a different tone? Summarize lengthy documents, rewrite and polish text, or catch grammar and logic mistakes. Plus, generate cover letters, emails, and more with ready-made templates. CREATE AND SEND INVOICES ON THE GO Project done, time to get paid. Add line items, taxes, and terms, then share with a link or export as a PDF—built for freelancers and remote workers who invoice on the go. BUILD A RESUME THAT STANDS OUT Enter your details and career goals—the AI handles layout, formatting, and design. Whether you're a student entering the job market or making a career move, the result is a professional CV ready to send in minutes. KEEP YOUR FILES SAFE AND SYNCED Store documents securely in the cloud and access them across every Apple device. Blur confidential information before sharing, add watermarks to protect your work, and lock folders with a PIN for added peace of mind. Edit, sign, fill, scan, and convert—Forma is the PDF editor that turns your phone into a document workspace. Download it today. FAQ Q: Can I use Forma offline? A: Yes. Editing, form filling, and signing all work without a connection. Cloud sync and AI features require an internet connection. Q: Who can see my documents? A: Only you. Files are encrypted in cloud storage and never shared with third parties. Q: Can I use Forma on both iPhone and iPad? A: Yes. Your files sync automatically between devices through secure cloud storage. Forma PRO – Subscribe to get Pro access to all features. You will be charged after the purchase confirmation. – Subscriptions auto-renew 24 hours before the expiration date. You can manage them in your Account Settings on the App Store. Privacy Policy: http://bpmob.com/forma/privacy/en/ Terms of Use: http://bpmob.com/forma/terms/en/ For any questions or inquiries about Forma, our PDF reader, contact us at http://bpmob.com/forma/support.
Screenshots
Verdict
The clearest difference is review sentiment: Forma at 69% against Lumin's 32%. Forma also leads on ratings volume (26K vs 916) and rating (4.7 vs 4.5). Lumin's advantage is in-app purchases (none vs 20) and update cadence (every 8 days vs monthly). On price, ads, monetization model 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. Forma sells 17 in-app purchases, starting at $3.99 per 7 days. Lumin asks for nothing beyond the download.
Forma holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Forma has 26K ratings behind it against 916, so its average is the more settled of the two. Written reviews point the same way: 32% of Lumin's written reviews are positive against 69% of Forma's.
Lumin ships an update every 8 days, Forma monthly. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.
| Parameter | Lumin | Forma |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (916 ratings) | 4.7 (26K ratings) — better |
| Positive reviews | 32.5% of reviews | 69.3% of reviews — better |
| Number of ratings | 916 | 26K — better |
| Update frequency | Every 8 days — better | Monthly |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | — | #105 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 269 MB | 201 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrolabs Limited | BPMobile |
Customer experience
Lumin
Forma
User reviews
Lumin
From 916 App Store ratingsWhat we love
- 🚀 Smooth performance
- 👍 Easy to use
- 💡 Useful annotation tools
- 🚀 Fast PDF rendering
Room to improve
- 🐛 Crashes and freezes
- 🔒 Unreliable data sync
- 💰 Expensive subscription
- 🐛 Buggy app experience
Forma
From 26K App Store ratingsWhat we love
- 🚀 Fast and efficient
- 👍 Easy to use
- 💡 Useful features like autofill and cloud sync
- 🚀 Seamless document management
Room to improve
- 🐛 Crashes and glitches
- 💰 Expensive subscription
- 🔒 Difficult to cancel subscription
- 🚫 Limited editing capabilities
Bugs and requests
Lumin
Reported bugs
4 issues- Lost work and unsaved changes
- Inability to open/access files
- Frequent login issues
- Compatibility problems on mobile
Requested features
4 requests- Offline mode support
- Split-screen functionality
- Improved highlight/annotation tools
- Better Google Drive integration
Forma
Reported bugs
3 issues- Incorrect document formatting after editing
- Inability to load or edit pre-existing documents
- Unexpected charges and billing issues
Requested features
4 requests- Undo/redo functionality
- Ability to edit existing text in documents
- Support for more file formats
- Stylus support for precise editing
In-app purchases
Lumin
No in-app purchases
Forma
- Forma Pro3 Days trial$3.997 Days
- Forma Pro$4.997 Days
- Forma Pro3 Days trial2 variants$4.997 Days
Show 14 moreShow fewer
- Forma Pro$5.997 Days
- Forma Pro3 Days trial$5.997 Days
- Forma Pro$6.997 Days
- Forma Pro3 Days trial2 variants$6.997 Days
- Forma Pro3 Days trial$9.991 Month
- 1 month Pro 100Gb storage3 Days trial$10.991 Month
- 1 year Pro 10Gb storage$19.991 Year
- Forma Pro$20.991 Year
- 1 year Pro 100Gb storage$24.991 Year
- Forma Pro$24.991 Year
- Forma Pro$29.991 Year
- Forma Pro$39.991 Year
- Forma Pro3 Days trial$39.991 Year
- Forma Pro3 Days trial$59.991 Year







