Stalk vs Sign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stalk
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Have you ever wished your messages on WeChat or Telegram were truly private — readable only by you and the person you're talking to? Stalk makes that possible, without asking you to switch apps or create new accounts. How it works You and your contact each get a personal lock and key. You keep your key secret; you share your lock with each other. When your contact writes you a message, they lock it with your lock. Only your key — stored only on your phone — can open it. The whole thing takes two taps. Copy the locked message from any chat app, open Stalk, and it unlocks automatically. Write your reply, lock it, paste it back. Done. Works with apps you already use WeChat, Telegram, iMessage, WhatsApp, Line — Stalk work alongside all of them. Your friends don't need to download anything new. You just exchange locks once, and from then on your conversations are private. No accounts. No servers. No catches. Stalk doesn't know who you are. It doesn't have servers. It never sees your messages. Everything — your contacts, your keys, your message history — stays on your device and nowhere else. Even if someone gets hold of your locked messages, they cannot read them. The lock can only be opened by the right key, and that key never leaves your phone. Simple enough for anyone You don't need to understand encryption to use Stalk. If you can copy and paste, you can have private conversations.
Sign
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Signature is a simple and easy-to-use electronic signature product Upload and scan various documents anytime, anywhere, quickly add signatures and share them with others Features & Highlights: —Supports uploading of various documents —Supports automatic and manual scanning of files —Scan file editing —Create multiple signatures —Sign documents quickly —Share with anyone in multiple ways Subscription information: There is a free subscription trial period After the free trial period, you can subscribe to unlimited access to all features in the app Subscriptions are charged weekly, monthly, or annually, and the fees are based on the subscription period. Payment will be deducted from iTunes account after confirmation of purchase You can turn off auto-subscription 24 hours before the end of your free trial, otherwise your free trial will automatically renew as a paid subscription when it expires. You can turn off automatic subscription 24 hours before the end of the current subscription, otherwise the subscription will automatically renew. Account will be charged for renewal within 24 hours prior to the end of the current subscription (including a free trial) and depends on the plan selected. You can manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Privacy Policy: https://sites.google.com/view/signaturefile/privacy terms of use: https://sites.google.com/view/signaturefile/team If you have any questions or concerns, please contact us at 704674386@qq.com.
Screenshots
Verdict
The clearest difference is in-app purchases: Stalk at none against Sign's 3. On price, ads, device support and iOS requirement 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. Sign sells 3 in-app purchases, starting at $3.99 per 7 days. Stalk asks for nothing beyond the download.
| Parameter | Stalk | Sign |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 21 MB | 9 MB |
| Age rating | 4+ | 17+ |
| Developer | 绍豪 骆 | Dalian Fuyuan Duoduo Technology Co., Ltd. |
In-app purchases
Stalk
No in-app purchases
Sign
- 1 week$3.997 Days
- 1 month$7.991 Month
- 1 year$39.991 Year









