Rebuild Index / Writeseed
Writeseed, rebuilt in 2 hrs
✓ REBUILT · 2 HRSAI writing
Writeseed AI writing assistant in any text field. Four features rebuilt: rewrite, tone, expand, and a floating toolbar. It sold on AppSumo as a lifetime deal at $44 to $176. We rebuilt it ourselves in 2 hrs. Below: what it cost, what it did, and the prompt to build the same thing yourself.
Deal status verified 2 August 2026 against the live listing.The deal record
| Product | Writeseed |
|---|---|
| What it is | AI writing assistant in any text field. Four features rebuilt: rewrite, tone, expand, and a floating toolbar. |
| Category | AI writing |
| Sold on | AppSumo see the original listing |
| Deal price | $44 to $176 one time |
| Stack | LLM backend |
| Product site | writeseed.com |
| Current status | ✓ REBUILT · 2 HRS |
| We rebuilt it in | 2 hrs |
| Last verified | 2 August 2026 |
What it takes to build your own
The question this page answers is what it costs to own the same core functionality yourself, with the source code in your hands afterwards.
The starter prompt
Build an AI writing assistant extension: select text on any page, get a floating toolbar with rewrite, fix grammar, change tone and expand.How to build it yourself
- Describe the extension. Paste the starter prompt on this page into PlugThis. It generates a working Manifest V3 Chrome extension from that description.
- Connect your own keys. If the extension needs a model or a database, connect your own OpenAI, Gemini or Supabase credentials so usage is metered to you rather than to a vendor's monthly cap.
- Iterate in plain English. Ask for changes the way you would describe them to a person. Builds that error do not count against your allowance.
- Install and own it. Download the folder, load it unpacked in Chrome, or publish it to the Chrome Web Store under your own developer account. The source is yours.
Licensing it versus building it
| Writeseed lifetime deal | Your own build | |
|---|---|---|
| Cost | $44 to $176 one time | Build time, plus your own model usage |
| Availability | Listed when last checked | Available now |
| Source code | Not included | Yours, downloadable |
| If the vendor stops | Licence ends with the product | Keeps working, you hold the code |
| Custom changes | Feature request, then wait | Describe the change, rebuild |
| Polish on day one | Mature product | Rougher until you iterate |
Frequently asked questions
Is Writeseed still available?
The Writeseed lifetime deal was listed on AppSumo at $44 to $176. Check the listing for current availability, since lifetime deals sell out without notice.
How much did Writeseed cost?
Writeseed was listed at $44 to $176 as a one-time lifetime purchase on AppSumo.
What does Writeseed do?
AI writing assistant in any text field. Four features rebuilt: rewrite, tone, expand, and a floating toolbar.
What is a good Writeseed alternative?
You can build an equivalent Chrome extension and own the source code instead of licensing it. PlugThis generates a working Manifest V3 extension from a plain English description. The starter prompt on this page is the exact text to begin with. Our estimate for this one is 2 hrs.
How long did it take to rebuild Writeseed?
We rebuilt it in 2 hrs using PlugThis. That is a measured time from our own build, not an estimate.
What happens to a lifetime deal after it sells out?
Existing buyers keep their licence, but nobody new can buy at any price, and buyers hold no source code and no leverage over the roadmap. If the vendor changes direction the licence ends with it. Building an equivalent avoids that dependency because the code sits in your own repository.
Sources and verification
Where these numbers come from
- Deal price, tiers and availability: AppSumo listing for Writeseed, read 2 August 2026
- Product description: writeseed.com
- Category and build estimate: The PlugThis Rebuild Index, our tracked dataset of Chrome extension lifetime deals
- Build time and method: first-hand, we rebuilt this one with PlugThis
Written by Udaya Prakash, founder of PlugThis. Updated 2 August 2026. We are not affiliated with Writeseed and this page is not sponsored.
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Get lifetime access on AppSumoRelated rebuilds
Other Chrome extension lifetime deals in the index.