Fyxer is an inbox assistant: it drafts email replies in your tone and tracks meeting follow-ups inside Gmail or Outlook. Viktor is a task-finishing agent: it plans its own steps across thousands of integrations and hands back a finished report or pull request instead of a chat reply. Lindy and Runable are agent builders instead, Lindy a no-code builder aimed squarely at email and calendar workflows, Runable a broader builder for sites, slides and automations with no inbox or calendar feature of its own. Marblism takes a fifth approach entirely: one flat subscription bundling seven specialized agents, inbox, social, leads, content, phone reception, a website and contract review, instead of one tool built around a single function.
ToolsGavel's top pick: Fyxer (4.1/5, from $37/mo) — Fyxer reads your sent mail, learns your tone, and drafts replies inside Gmail or Outlook while it joins calls to record notes and track who owes you what. A Trustpilot base of 751 reviews puts it at 4.0/5, the largest and steadiest score in this set, and the $37/mo Pro tier sits behind a genuinely permanent, 400-credit Free plan. The catch: a recurring Trustpilot complaint describes surprise per-seat billing, including one reviewer charged $1,400 for three unintended seats before getting a refund, so check who's actually active in the admin panel before a renewal.
3
Marblism Most AI agents bundled into one plan ★★★★★ ★★★★★ 3.7
Marblism bundles seven AI agents, an inbox and scheduling assistant, a social poster, lead generation, SEO content, a phone receptionist, a website builder and contract review, into one $24/mo (annual) subscription with unlimited seats and unlimited businesses, a broader scope than any other tool in this guide. Trustpilot rates it 4.8/5 from 1,208 reviews, the highest headline score here, and it backs that up with a confirmed #1 Product of the Day launch on Product Hunt. The catch: reading past the aggregate score turns up a recurring billing-complaint cluster, charges after cancellation and refused refunds, plus specific reports that individual agents, lead gen named twice, don't produce usable output, with no G2 or Capterra listing to check either pattern against.
Best for: Small businesses that want an inbox, social posting, lead gen, blog content, a phone receptionist, a website and contract review handled by one subscription instead of stitching together five separate tools, and who will watch their billing statement closely after cancelling · from $24/mo billed annually ($44/mo month-to-month), one plan for the whole team
Deal 10% off Marblism for as long as you stay subscribed, for new users Applied automatically when you sign up through our link. No code needed.
Verified Nov 2026
All five tools publish a monthly sticker price. None of the five prices actually caps what you’ll spend once you use the product daily, and the reason differs by vendor.
Fyxer charges per seat, then meters each seat separately in credits: 1 credit per minute of recorded meeting, 20 credits per chat message, 0.2 credits per sorted email. Viktor charges the whole workspace a single credit pool with no per-seat fee, but never publishes what a credit costs in dollars. Lindy charges per user in credits too, and credits past the monthly allowance bill at $10 per 1,000. Runable charges per workspace in monthly credits plus a separate daily free allotment that renews regardless of plan. Marblism is the outlier: one flat price for the whole team, metered in hours instead of credits, with no per-seat fee at all.
| Tool | Meters / charges for | Cheapest paid entry | Free plan | Why sticker price differs from real spend |
|---|
| Fyxer | Per-seat subscription, metered in credits inside each seat (1/min recording, 20/chat message, 0.2/sorted email) | $37/person/mo billed annually ($49/mo month-to-month) | 400 credits/mo, permanent | Adding seats multiplies price directly; heavy meeting users burn the 3,000-credit/member cap fast once the 3-month unlimited launch window ends |
| Viktor | Workspace-wide credits, no per-seat charge, no published $/credit rate | $50/mo for 20,000 credits | $100 one-time trial credit, no card, doesn’t renew | Reviewers report real spend of $150-$400/mo once daily use starts, since one complex workflow can burn 2,000-5,000 credits |
| Lindy | Per-user credits, overage at roughly 2x the standard rate | $49.99/user/mo for 5,000 credits | $50 credit, 7 days, no card (trial, not lasting) | The entry tier’s 5,000 credits run out fast on anything beyond simple automations, and overage compounds the gap |
| Runable | Workspace credits per month, plus a renewing daily free allotment, no per-seat charge | $20/mo for 25,000 credits/mo + 1,500/day | 1,500 credits/day, capped at 15,000/mo, no card, genuinely ongoing | No published top-up rate; paid plans advertise “$300 in free Ad credits” with undefined scope, and the advertised “3,000+ apps” mostly routes through Zapier rather than native connectors |
| Marblism | Flat subscription for unlimited seats, metered in hours (50/mo), not credits | $24/mo billed annually ($44/mo month-to-month), unlimited seats | None; 7-day money-back guarantee instead | No published top-up price once the 50 hours run out, so a heavy month is hard to budget for in advance |
The real-spend gap shows up clearest on Viktor: its $50/mo entry tier buys 20,000 credits, but independent reviews put actual monthly spend at $150 to $400 once a team uses it daily, since a single complex workflow alone can consume 2,000 to 5,000 credits. Fyxer’s gap shows up in seats, not credits: a $37/mo plan multiplies by headcount fast, and its billing-complaint cluster on Trustpilot centers on exactly that, people getting charged for seats they didn’t mean to add. Lindy’s overage math is the most transparent of the four on paper, $10 per 1,000 extra credits, but a 5,000-credit entry allowance runs out quickly on anything beyond a simple automation. Runable is the cheapest to start, and its free plan is both ongoing and explicitly confirmed as card-free, a combination the other three don’t all match, but it doesn’t publish a top-up rate either, and a “$300 in free Ad credits” promo on its paid plans comes with no stated scope.
Free plans and trials compared
Only Fyxer and Runable keep a free plan that doesn’t expire. Fyxer’s Free gives one person 400 credits a month indefinitely, about 20 chat messages or 6 hours 40 minutes of meeting recording; new accounts land there automatically once a 14-day Team trial ends without payment, though a card requirement for Free itself isn’t separately published. Runable’s Free gives 1,500 credits a day capped at 15,000 a month, explicitly no card required (“No subscriptions needed”), and it’s ongoing rather than time-boxed. Viktor and Lindy both offer trial credit instead of a lasting plan: Viktor grants $100 with no card and no expiry date until it’s spent, and Lindy grants $50 that expires after 7 days regardless of use, both card-free but neither renewing. Marblism skips a free plan entirely, offering a 7-day money-back guarantee instead of any trial credit. Of the five, only Runable’s free plan is confirmed card-free and ongoing at the same time.
Picking the right one for your workflow
Fyxer fits someone drowning in client email who wants drafts and a follow-up list without learning a new app. Viktor fits a team that already lives in Slack or Teams and wants a task finished, not described. Lindy fits an operator who wants to design the exact steps of an email-and-calendar workflow themselves in a no-code builder, and is willing to tolerate its weaker Trustpilot standing for a stronger G2 one. Marblism fits a small business that wants several non-email functions, social, leads, content, phone reception, a website, contracts, bundled under one subscription, as long as it’s comfortable testing lightly within the 7-day money-back window first given the billing-complaint pattern in its review. Runable fits someone who wants a cheap, broad automation and content-building agent and doesn’t need it to touch an inbox or calendar at all; given its thin and largely negative review trail, test it on the free plan before putting a card on file.
How we picked
Every price, credit figure and review score in this guide came from each vendor’s own pricing and FAQ pages, checked directly on 2026-10-30 for the first four tools and 2026-11-06 for Marblism, cross-referenced against G2, Capterra, Trustpilot, the Apple App Store and, where available, SourceForge and Product Hunt. Some of those review counts are small, Runable’s Trustpilot score rests on only 6 reviews, and we’ve flagged that directly rather than treat it as a stable number.
The ranking is editorial, not a function of which tool pays us a commission. ToolsGavel may earn a commission if you sign up through a link on this page; that never changes the order the tools appear in.
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Frequently asked questions
What's the difference between an AI inbox assistant and an AI agent that finishes tasks?
An inbox assistant like Fyxer reads your sent mail, learns your tone, and drafts replies and follow-ups inside Gmail or Outlook, staying scoped to email and meetings. A task-finishing agent like Viktor takes a broader instruction, plans its own steps across its integrations, and hands back a finished artifact, a report, a dashboard, a pull request, instead of a draft you still have to act on. Lindy and Runable sit between the two: you (or a template) design the steps yourself in a no-code builder, rather than the agent planning them on its own.
Which of these AI assistants has a real free plan?
Fyxer and Runable both keep a free tier that doesn't expire: Fyxer gives one person 400 credits a month indefinitely, and Runable gives 1,500 credits a day capped at 15,000 a month with no card required. Viktor and Lindy only offer trial credit instead: Viktor grants $100 with no card and no time limit until it's spent, and Lindy grants $50 that expires after 7 days regardless of use. Neither of those is a plan you could run a workflow on every month without eventually paying.
Why does Viktor cost more in practice than its $50/mo sticker price?
Viktor doesn't publish what a credit actually costs in dollars, so the $50/mo, 20,000-credit entry tier reads cheaper than it runs. Independent reviews report real monthly spend of $150 to $400 once a team uses it daily, since a single complex workflow alone can burn 2,000 to 5,000 credits. Budget closer to that range than to the sticker price before committing a team to it.
Is Runable a good replacement for an email assistant like Fyxer or Lindy?
No, and it's worth being direct about that. Runable has no demonstrated Gmail, Outlook or calendar-booking feature; its personal-assistant layer works by direct message across Slack, Teams, Telegram, iMessage and Discord, not an inbox. It's a reasonable budget pick for general multi-step tasks like building a site, deck or workflow, but for email and calendar work specifically, Fyxer or Lindy are the closer fit.
