Underlay vs PassSnap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Underlay
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Underlay makes it easy to recreate any photo with precision. Keep your original visible while you shoot, align every detail, and capture a better match in less time. • Use a reference photo beside the camera or as a live overlay • Fine-tune opacity, position, scale, and rotation • Match framing, angle, composition, and subject size • Edit your result with crop and filters • Save and share before-and-after photos Perfect for travel recreations, pose matching, product photography, and progress shots. FREE 3-DAY TRIAL, THEN WEEKLY Enjoy unlimited photo saves and sharing with Underlay. After the 3-day free trial, your subscription renews automatically every week unless canceled at least 24 hours before the end of the trial or current billing period. Manage or cancel anytime in your iPhone Settings. MONTHLY PLAN Get unlimited photo saves and sharing with Underlay. Your subscription renews automatically each month unless canceled at least 24 hours before the end of the current billing period. Manage or cancel anytime in your iPhone Settings. Subscribe for unlimited access to Underlay features. Choose between weekly, or monthly payment plans. By using Underlay, you agree to our Privacy Policy and Terms of Use: https://sites.google.com/view/underlay-privacy-policy/home https://sites.google.com/view/underlay-terms-of-use/home
PassSnap
Easily create official passport, visa, and ID photos from your iPhone. Get digital uploads, single photos, print layouts, and instructions. Supports multiple countries and document types with optional AI enhancements.
- Guided photo capture
- Official digital upload JPEGs
- Single-photo exports
- 4x6 inch print layouts
- Print instructions PDF
- AI white-background
- AI beautification
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PassSnap helps you create official-size passport, visa, immigration, and ID-style photo packages from your iPhone. Choose a supported photo type, follow the guided camera frame, and PassSnap prepares the required digital upload JPEG, single photo, 4 x 6 print layout, and print instructions when supported by that document type. PassSnap 2.0 supports photo packages for selected United States, Hong Kong SAR, Canada, United Kingdom, Australia, and New Zealand document workflows, including passport, visa, immigration, citizenship, PR card, and applicant-supplied photo formats where supported. Core features: - Guided capture for supported ID photo types. - Official-size digital upload JPEGs where applicable. - Single-photo exports for supported document specs. - 4 x 6 inch print layouts when printing is supported. - Print instructions PDF for photo shops and home printing. - Local History with package files and download status. - iCloud backup and restore for saved packages. - Original, AI white-background, and AI beautified package file groups when available. - Optional AI verify for a final risk review of glasses, expression, background, framing, and file metadata. - Optional AI white-background add-on that creates separate white-background files. - Optional AI beauty add-on that creates a separate polished copy without replacing the original package. - Package-bound download unlock for repeat save and share. PassSnap is not a government service and cannot guarantee acceptance by any passport office, immigration authority, embassy, consulate, licensing agency, or other receiving organization. The receiving authority always makes the final decision. AI features are optional. AI verify is a risk review only. AI white-background and AI beauty files are separate generated copies and do not replace the original package.
Screenshots
Verdict
The clearest difference is update cadence: PassSnap at weekly against Underlay's every 3 weeks. 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. Underlay sells 2 in-app purchases, starting at $1.99 per 7 days and PassSnap sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Underlay ships an update every 3 weeks, PassSnap weekly. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.
| Parameter | Underlay | PassSnap |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Vyacheslav Volynchits | Cnnex Limited Company |
In-app purchases
Underlay
- Underlay Weekly Membership3 Days trial$1.997 Days
- Underlay Month Membership$5.991 Month
PassSnap
- AI_VERIFICATION$1.99
- AI beauty add-on$1.99
- AI white background add-on$1.99
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- UNLOCK PACKAGE$4.99









