OnlyMonster vs Substy (2026)
Which OnlyFans CRM fits your agency?
OnlyMonster
SubstyPick OnlyMonster for a multi-platform operation that wants transparent per-account pricing and a real public API, with a rate you can lock by prepaying. Pick Substy only if you want an autonomous AI closing PPV on its own and can accept its sales commission, thin trust record, and Fansly gap.
Last updated July 6, 2026. Prices checked against both vendors' pages.
Side by side
| OnlyMonster | Substy | |
|---|---|---|
| Price from | From $30/mo per account | Free, then $69/mo per creator |
| Best for | Budget multi-platform API-driven agencies | Agencies wanting autonomous AI selling |
| Platforms | OnlyFans, Fansly, Fanvue, more | OnlyFans, Fanvue, more |
| Free trial | A 7-day free trial with no credit card required per the homepage, including 100 AI credits per the pricing docs. | A free 'Starter' plan at $0/month indefinitely (15% commission on AI sales, unlimited creators), with paid Pro and Elite plans including a one-week free trial. |
OnlyMonster is a full management platform in its own desktop browser: chatting console, vault, chatter permissions, and a documented public REST API. Substy is a browser CRM built around an autonomous AI seller that runs the inbox 24/7 and routes whales to humans.
Platforms cut differently here. OnlyMonster covers OnlyFans, Fansly, Fanvue, Reddit, LoyalFans, and more. Substy runs OnlyFans and Fanvue live, with Fansly unsupported and MYM coming soon. Both carry a catch: OnlyMonster's independent review trail is thin, roughly one Trustpilot review, and Substy sits near 2.9 on refund complaints.
Pricing, in plain English
OnlyMonster prices per account. OnlyFans is dynamic, read off that account's trailing 30-day earnings across seven bands from $30 to $250/mo. Every non-OnlyFans platform is a flat $30/mo each. Prepay 3 or 6 months and you lock the rate before a page climbs a band.
Substy is subscription plus commission on AI sales: Starter $0 at 15%, Pro $69 per creator/mo at 10%, Elite $99 per creator/mo at 8.5%. Note the contradiction, the page bills per creator while marketing claims one flat rate. Work a number. Run 5 OnlyFans pages in the $30 band on OnlyMonster and that is 5 x $30 = $150/mo, fixed. On Substy Pro that is 5 x $69 = $345/mo, and if the AI books $8,000, add 10% = $800, so the real bill is $1,145. The commission grows with sales, not headcount.
OnlyMonster
Billed per connected account. For OnlyFans the price is dynamic, set by that account's trailing 30-day earnings across seven bands ($30/mo up to $250/mo). All other platforms (Fansly, Fanvue, Reddit, LoyalFans, Subs, Telegram, TXT) are a flat $30/mo per connected account. Prepaying 3 or 6 months locks the current rate against earnings-driven increases, and AI features draw on a monthly AI-credit allocation shared across the organization, with more purchasable.
- Free trial$0 (7-day)7-day free trial, no card required per the homepage; includes 100 AI credits.
- OnlyFans: Pro Starter ($0 to $2,500 30-day earnings)$30/mo ($81/3mo, $144/6mo)Dynamic tier set by the connected account's trailing 30-day earnings.
- OnlyFans: Pro Scaling ($5,000 to $10,000)$50/mo ($135/3mo, $240/6mo)Earnings-band tier billed per connected OnlyFans account.
- OnlyFans: Pro Superstar ($50,000+)$250/mo ($675/3mo, $1,200/6mo)Top earnings tier including up to 3,000 monthly AI credits.
- Other platforms (Fansly, Fanvue, Reddit, LoyalFans, Subs, Telegram, TXT)$30/mo per accountFlat rate per connected non-OnlyFans account regardless of earnings.
Substy
Tiered subscription plus a commission on AI-generated sales. The pricing page states monthly plans are billed 'per creator' ($69 Pro, $99 Elite), with a commission on AI sales (15% free tier, 10% Pro, 8.5% Elite) and a 25% annual discount. Some Substy marketing copy instead claims a single flat rate for all accounts combined, which contradicts the 'per creator' wording and could not be reconciled.
- Starter$0/moFree plan, unlimited creators; 15% commission on AI sales only. Full AI chatting (Normal/Aggressive modes) and welcome-message automation.
- Pro$69 per creator / mo10% AI commission. Adds Mass DM, dynamic lists, 6 automations, three AI chat-speed modes. Billed 'per creator'; 25% annual discount; one-week trial.
- Elite$99 per creator / mo8.5% AI commission (stated 'lowest on the market'). Adds AI Hybrid mode, all automations, tracking links, and Browser OF. 25% annual discount; one-week trial.
Feature by feature
| Feature | OnlyMonster | Substy |
|---|---|---|
| Chatting consoleA unified inbox where chatters work every model's DMs from one screen. | YesA unified chatting console/inbox for fan interactions inside its dedicated OnlyMonster Browser. | YesA browser-based chat interface with a split inbox and automatic chatter assignment. |
| AI repliesAI drafts or sends replies for the chatter, instead of typing every message by hand. | YesAI Smart Replies, AI Auto-Generate, and AI Monster Translate, consuming a monthly AI-credit allocation. | YesAn autonomous AI chatbot that runs 24/7, remembers each fan, adapts tone/language, and sells PPV; Slow/Normal/Aggressive modes plus a hybrid AI-plus-human mode. |
| Mass DMSend one message to a whole segment of fans at once (a mass DM / bulk campaign). | YesMass DM / bulk messaging is listed among the core features on the homepage. | YesMass DM with dynamic lists, included starting on the Pro plan. |
| AnalyticsRevenue and performance dashboards for models, chatters, and campaigns. | YesAnalytics dashboards, AI Chat Analysis, Fan Scoring, and chatter-performance monitoring, though third-party reviews call the reporting depth basic. | YesA centralized dashboard tracks revenue, conversions, AI performance, and per-model metrics; campaign and fan-level analytics are provided. |
| Chatter managementManaging the chatting team itself: shifts, permissions, and per-chatter stats. | YesTeam/employee management with role assignment, access-control permissions, and per-chatter performance/sales tracking. | YesAdd chatters with custom access levels and monitor per-chatter performance (sales count, response rates, conversion) in real time. |
| Media vaultA shared media library so chatters resend content without digging through the phone. | YesA media vault, with a documented API endpoint for uploading media to the OnlyFans vault via presigned S3 URLs. | Not publishedA media/content vault could not be confirmed or denied on any accessed page. |
| Saved scriptsSaved replies and sales scripts a chatter can drop into a conversation. | YesSaved scripts and reply templates (canned messages) in the chatting console. | YesCustomizable message scripts/templates define tone and negotiation style; scripts can be imported from other CRMs such as Infloww. |
| Tracking linksTracked links that attribute new subscribers to a traffic source. | YesTracking links and trial links, with dedicated API endpoints for tracking links, trial links, and chargebacks. | YesIntegrated tracking links attribute traffic by channel (TikTok, Reddit, Telegram, etc.); included on the Elite plan. |
| API / integrationsA public API or native integrations to push data in and out of the tool. | YesA public, documented REST API (production endpoint omapi.onlymonster.ai) with an OpenAPI reference, webhooks, a 25 req/s rate limit, and endpoints for accounts, chats, messages, transactions, members, and vault folders. | Not publishedNo public API or webhooks documented; only one-way data import/migration from competitors like Infloww is mentioned. |
What you're looking at
Choose one
Choose OnlyMonster if…
- The creators you manage span OnlyFans, Fansly, Fanvue, and Reddit, and you want one console covering all of them.
- You need to wire the CRM into your stack: OnlyMonster ships a documented REST API with webhooks and a 25 req/s limit.
- You want billing you can forecast and lock by prepaying 3 or 6 months before a page grows into a higher band.
Choose Substy if…
- You want an AI that sends and closes PPV on its own, in Slow, Normal, or Aggressive mode.
- You want hybrid routing that hands a fan to a human once they cross a spend threshold, Substy's example being $40.
- You want to start free on the $0 Starter tier and pay almost nothing until the AI earns.
People also ask
How is OnlyMonster's OnlyFans price set?
What does Substy actually cost?
Which one covers more platforms?
Is Substy safe to trust?
Your CRM manages. Outseeker delivers.
A CRM without a steady flow of new creators just manages standstill. Outseeker runs your outreach, finds good models, and brings you the ones who actually want to sign.
2 new creators a month, guaranteed. Or we work for free until you hit it.
Independent comparison, built and maintained by the Outseeker team.
How we checked this
Every price and feature above was checked against these pages in July 2026. Tools change their pricing, so use the links to confirm.
- OnlyMonsteronlymonster.aiOfficial homepage. Feature list, supported platforms, 7-day trial no-card claim.Retrieved 2026-07-06
- OnlyMonsterdocs.onlymonster.ai/billing-and-pricing/plans-and-pricingOfficial docs. Seven OnlyFans earnings tiers with monthly/3mo/6mo prices, flat $30 other-platform rate, AI-credit allocations, rate-lock note.Retrieved 2026-07-06
- OnlyMonsterdocs.onlymonster.ai/integrations-and-api/openapiOfficial API docs. Public OpenAPI, production endpoint, rate limits, endpoints for accounts/chats/messages/tracking links/transactions/vault.Retrieved 2026-07-06
- OnlyMonsterwww.trustpilot.com/review/onlymonster.aiTrustpilot. Very thin sample (about one review).Retrieved 2026-07-06
- Substysubsty.aiHomepage. Positioning, live platforms (OnlyFans/Fanvue live, MYM coming soon), core features.Retrieved 2026-07-06
- Substysubsty.ai/pricingPricing page. Starter $0/15%, Pro $69 per creator/10%, Elite $99 per creator/8.5%, 25% annual discount, one-week trial, 'per creator' wording.Retrieved 2026-07-06
- Substysubsty.ai/features/ai-chatAI chatbot page. Autonomous replies, hybrid mode with $40 threshold, multilingual, scripts/tone modes, PPV selling.Retrieved 2026-07-06
- Substywww.trustpilot.com/review/substy.aiTrustpilot. Around 2.9 rating, 2 reviews; complaints on AI reliability, support, refunds, post-cancellation charges.Retrieved 2026-07-06