5 AppSumo Deals Reviewed: Letterly, EngineMailer & More

The Taco Truck Roundup: Five Deals, One Video

Welcome to the Taco Truck Roundup — a bite-sized recap of five AppSumo lifetime deals reviewed in a single sitting. Most full-length reviews on this channel run 20 to 40 minutes each, and with five new reviews dropping in a single week, that's a serious time commitment. This format gives you the highlights, the scores, and the key takeaways so you can decide which tools deserve a closer look.

Every deal covered here has a corresponding full-length review linked below, so if something catches your eye, you can dive deeper. Let's get into it.

Letterly: Voice-to-Text That Actually Cleans Up Your Ramblings

Letterly is a mobile app available on both Android and iOS that turns voice recordings into polished, usable text. You talk into your phone, and Letterly transcribes everything while also cleaning up your grammar, filling in gaps, and making the output readable. From there, you can repurpose that text into tweets, LinkedIn posts, or simple bulleted summaries.

One particularly clever use case: in-person meetings. There are plenty of tools that capture and summarize Zoom calls, but what about face-to-face conversations? Drop your phone on the table (with everyone's knowledge, of course), record the meeting, and send out a polished summary afterward. You'd look like a total superhero.

The catch? Letterly has a 15-minute recording limit, which puts a ceiling on longer meetings. That was really the only major concern. The app itself is beautifully designed and worked seamlessly during testing. AI-generated subject lines were the weakest feature, but everything else produced high-quality output. Final score: 7.7 out of 10.

EngineMailer: Budget Email Marketing That Charges by Sends, Not Contacts

EngineMailer is an email marketing platform that also supports transactional emails for developers. It's not going to win any design awards — the interface has more of a developer's touch than a designer's — but for the price, it does a surprisingly solid job. You get both broadcast newsletters and automation drip sequences under one roof.

The standout feature is the pricing model. Instead of charging per contact (like most email platforms), EngineMailer charges based on the number of emails you send per month. That means you can grow your contact list without worrying about tier upgrades. At $29, you get 12,000 sends per month. That sounds generous, but as one commenter pointed out, a 10-email welcome sequence sent to just 1,200 subscribers would eat your entire monthly quota. So plan accordingly.

Longevity is always a concern with email marketing lifetime deals because sending emails has real infrastructure costs. EngineMailer addresses this by hosting their own sending servers using Haruka, the same open-source software Dave uses personally. That's a more sustainable path than relying on expensive third-party providers like SendGrid. Final score: 6.7 out of 10 — worth a look if you're budget-constrained and just getting started.

URL Monitor: Automated Google Indexing for Non-WordPress Sites

URL Monitor tackles a specific but important problem: getting Google to notice your content updates faster. Normally, Google crawls your site on its own schedule, which can mean delays of days or even weeks before new pages appear in search results. Google Search Console lets you manually request re-indexing, but doing that every time you publish gets tedious fast.

URL Monitor connects to your Google Search Console account and automatically checks your site daily for changes, then pings Google to re-index updated pages. If you're on WordPress, several SEO plugins already offer instant indexing — though they're often tricky to set up, require a Google Cloud account, and cap out at 200 URLs per day. But if you're on Shopify, Wix, Ghost, or any other CMS, your options for automated indexing are much more limited, and that's where URL Monitor fills a real gap.

Some commenters dismissed this as useless or declared SEO dead entirely. On the SEO-is-dead point: not yet. It's easy to get caught in a tech bubble where everyone seems to be using AI for everything, but most people outside the tech world have barely touched ChatGPT. SEO traffic is still very real, and even as AI-powered search evolves, Google will still need to source content from somewhere. Staying on Google's radar remains a smart long-term play.

Frank AI: A ChatGPT Alternative at a One-Time Price

Frank AI is essentially a ChatGPT-style interface — available as a mobile app and web app — where you can chat with an AI assistant, generate images, upload PDFs and spreadsheets for analysis, and get help with writing tasks. The UI is genuinely good, not quite ChatGPT-level polish, but solid. And the price is hard to argue with: $69 once versus $20 per month for a ChatGPT Plus subscription.

Under the hood, Frank AI is powered by GPT-4, which means the output quality matches what you'd expect from OpenAI's flagship model. But that's also the source of the biggest concern. GPT-4 API costs are significant, and several commenters questioned whether Frank AI can sustain unlimited access at a one-time price point. One commenter went so far as to say you could build the same thing yourself with the API — and while that's technically true, most people have zero interest in building and maintaining their own AI chatbot.

There's some comfort in AppSumo's newer buyer protection policy: if a deal goes under within 12 months, regular customers get 50% back in credits and AppSumo Plus members get a full refund. That makes the $69 gamble more palatable. As for usage limits on GPT-4 within Frank, no clear answer was found on either Frank's website or the AppSumo listing. For now, it appears unlimited — enjoy it while it lasts.

OneTab: All-in-One Project Management for Dev Teams

OneTab is a project management platform built specifically for development teams. The concept is straightforward: everything you need to run a dev project lives inside a single browser tab. That includes Slack-style chat with channels and direct messaging, Kanban boards with drag-and-drop task management, GitHub integration for viewing repos and setting up pipelines, and shared API documentation.

The plans are generous — starting at 5 users and 5GB of storage, scaling up to 50 users and 50GB on the highest tier. The UI is polished for a lifetime deal product, and there are some unexpected extras like a screenshot-to-HTML converter that worked better than expected (though it felt a bit out of place in a project management tool).

There are some real limitations worth noting. You can't create multiple Kanban boards within a single workspace — you'd need to spin up an entirely new workspace for a second board, which feels unnecessarily restrictive. The tool is also firmly aimed at developers; marketing teams or non-technical users would find the GitHub integrations and pipeline features confusing rather than helpful. Final score: 7.2 out of 10 — a solid option for dev teams looking for an affordable all-in-one workspace.

Which Deals Are Worth Grabbing?

Five deals, five very different tools. Letterly (7.7/10) is a polished, well-executed mobile app for anyone who thinks better out loud. EngineMailer (6.7/10) is a budget-friendly email marketing option that makes the most sense for people just starting out. URL Monitor fills a genuine SEO gap for non-WordPress sites. Frank AI offers GPT-4 access at a fraction of the subscription cost, though its long-term viability is a question mark. And OneTab (7.2/10) is a capable project management tool for small development teams.

Every tool reviewed here has an affiliate link below. If any of these caught your attention, clicking through before purchasing helps support the channel and keeps these reviews coming. And if you want the full deep-dive on any of these deals, the complete playlist of full-length reviews is linked in the description.

Watch the Full Video

Prefer watching to reading? Check out the full video on YouTube for a complete walkthrough with live demos and commentary.