Seal Designer vs LocalStamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seal Designer
Design custom Chinese seals with a vast library of characters and artist seals. This app offers a convenient way for enthusiasts to create and collect unique seal designs.
- Extensive seal script character library
- 50,000 famous artist seals
- Over 100,000 famous seal characters
- In-app purchases for extended use
- Design and collect seal characters
Read full descriptionHide full description
Seal carving design software, containing various seal script characters you have and haven't seen, with 50,000 famous artist seals and over 100,000 famous seal characters, making it convenient for seal carving enthusiasts to design and collect characters themselves. Some features include in-app purchases, and exceeding the free usage limit requires a purchase.
LocalStamp
Read full descriptionHide full description
LocalStamp is a lightweight tool dedicated to local batch watermarking. It is designed for creators and everyday users who want to protect multiple photos quickly before sharing them to social networks or portfolios. All processing happens directly on your device. Photos are not uploaded to any server, and the app does not read or collect your photo library contents beyond what is needed to apply watermarks. There are no ads or promotional pop-ups, keeping the experience clean and focused. ### Key Features - Batch watermarking: Select multiple photos at once and apply a unified watermark to save time - Text watermark: Customize text content, font (including common Chinese fonts), size, color and opacity - Image watermark: Use a logo or PNG image as a watermark, ideal for protecting creative work - Layout and style: Adjust watermark position, margins, repetition density and alignment so marks remain clear without covering the main subject - Local processing: Watermark generation runs entirely on-device, without relying on remote servers - No ads: No banner ads, no full-screen ads and no disruptive promotions ### Purchase and Usage - Try the full set of features for a limited time before deciding to unlock - One-time purchase unlocks all watermark capabilities permanently, with no subscription and no auto-renewal Actual pricing is determined by the App Store in your region. ### Privacy and Network Usage - Photos and watermark content stay on your device; the app does not upload your images - Network access is used only to communicate with Apple servers when validating purchase status - No third-party analytics or advertising SDKs are integrated, and no usage tracking is performed
Screenshots
Verdict
The clearest difference is update cadence: Seal Designer at every 2 weeks against LocalStamp's every 3 months. Seal Designer also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.5). On price, ads and in-app purchases 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. Seal Designer sells 6 in-app purchases, starting at $2.99 per month and LocalStamp sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Seal Designer ships an update every 2 weeks, LocalStamp every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Seal Designer | LocalStamp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 92.9% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 498 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Chengdu Art-bit Technology Co., Ltd. | 军 沈 |
In-app purchases
Seal Designer
- 月会员$2.991 Month
- 季会员$8.993 Months
- 年会员$34.991 Year
- 保存5次$2.99
- 保存20次$3.99
- 终身会员$59.99
LocalStamp
- Permanent Membership$0.99
