Head to head
PostOnce (postonce.app) vs SocialBu
Last updated 15 October 2026
Flat-euro multi-network scheduler for local businesses and solo operators, with recurring posts and media tools.
- From
- €12a month, billed yearly
- Free scheduling
- No
SocialBu offers publishing across twelve networks, with inbox, listening, approvals and automation on Growth and Agency. Its current paid lineup is Starter, Growth and Agency, and API/MCP access is documented.
- From
- Limited free credits; confirm paid offer
- Free scheduling
- No
Bottom line
PostOnce (postonce.app) is the pick for local businesses publishing to several networks. SocialBu fits small businesses and agencies who want scheduling plus automation better.
A verified price comparison requires the same billing term, currency and eligible workload. See each pricing section for the published terms.
Key differences
Where the two actually diverge, before the full tables.
- PostOnce (postonce.app) posts to 9 networks, SocialBu to 12.
Features compared
| Feature | PostOnce (postonce.app) | SocialBu |
|---|---|---|
| AI captions | Not assessed | Yes |
| Basic analytics | Yes | Yes |
| Advanced reports | Not assessed | Yes |
| Bulk upload | Not assessed | Yes |
| Evergreen recycling | Yes | Partial |
| Team roles | Not assessed | Yes |
| Approvals | Not assessed | Yes |
| Link in bio | Not assessed | Not assessed |
Platforms compared
| Network | PostOnce (postonce.app) | SocialBu |
|---|---|---|
| Auto | Auto | |
| Auto | Auto | |
| X (Twitter) | Auto | Auto |
| Auto | Auto | |
| TikTok | Auto | Auto |
| Auto | Auto | |
| YouTube | Auto | Auto |
| Threads | Auto | Auto |
| Bluesky | Auto | Auto |
| Google Business | Not assessed | Auto |
| Mastodon | Not assessed | Auto |
| Not assessed | Auto |
Pricing
Prices use each tool’s billing unit. Annual equivalents are labeled as billed yearly; scaling rows show monthly costs and available annual rates.
No free plan.
- Lowest public entry price
- €12 a month, billed yearly
Whole-plan price; it doesn't scale per unit.
No free plan; trial advertised.
Limited free credits; confirm paid offer
PostOnce (postonce.app)
Solo
€12 a month billed annually
- Seats
- 2
- Accounts
- 10
- Scheduled posts
- Unlimited
- Run by Lucro Limited and founded by Sven van Staden. This is separate from postonce.to. Instagram Stories are not supported.
- Published EUR prices include VAT.
- Pro €30/month or €300/year; unlimited accounts, 3 workspaces, 5 users.
- Entry annual bill: EUR144.
SocialBu
Free
- Seats
- 1
- Accounts
- 3
- Scheduled posts
- 10
- Ten lifetime posts; three social accounts
Starter
- Seats
- 1
- Accounts
- Not confirmed
- Scheduled posts
- 750
- USD29 monthly; annual offer and account allowance conflict across official sources
- No teams, inbox or listening
Growth
- Seats
- 4
- Accounts
- 20
- Scheduled posts
- 3000
- Twenty accounts, four team members, five teams
- Inbox, listening, approvals and automation
Agency
- Seats
- 8
- Accounts
- 50
- Scheduled posts
- 100000
- Fifty accounts, eight team members, twenty teams
- App-limit help specifies 100,000 posts/month despite marketing unlimited label
Custom
- Seats
- Unlimited
- Accounts
- Unlimited
- Custom plans for agencies and large teams, priced on request
- Current new-customer plans are Free, Starter, Growth and Agency; Standard/Super/Supreme are not the current public lineup.
- Monthly USD29/79/199 agrees across pricing and current help. Annual marketing totals USD261/711/1791 conflict with app-configuration help USD290/790/1990; confirm your offer.
- Starter marketing says eight accounts, current help six. Agency help specifies 100,000 monthly posts. Disputed values are not used in automatic comparisons.
- Growth/Agency include 5/10 listening streams and 5,000/20,000 matched items monthly. API and MCP are on paid plans; not Free.
- The free ten-post allowance is lifetime, not a renewing free scheduling quota. It is excluded from recurring-free-plan comparisons.
Pros and cons
PostOnce (postonce.app)
- VAT-inclusive euro plans for small-business workflows; Pro offers API access and multi-workspace reporting.
- No public free plan or trial.
- Instagram Stories are not supported.
SocialBu
- Twelve supported social networks
- API and MCP on paid plans
- RSS/webhook automation on Growth and Agency
- Limited free entry allowance of ten lifetime posts
- Official annual pricing and some limits conflict
- Starter lacks team collaboration, inbox and listening
- Automation, AI and listening allowances vary by plan
PostOnce (postonce.app) vs SocialBu: FAQ
- Is PostOnce (postonce.app) or SocialBu cheaper?
- A verified price comparison is unavailable for these configurations. Check the current billing term, currency, required capacity and plan features before comparing totals.
- Does PostOnce (postonce.app) or SocialBu have a free plan?
- Neither has a free plan. At least one advertises a trial. Check each current trial offer and billing terms.
- Which is better, PostOnce (postonce.app) or SocialBu?
- PostOnce (postonce.app) is the stronger pick for local businesses publishing to several networks, while SocialBu is the better fit for small businesses and agencies who want scheduling plus automation. We don't score them; the right call comes down to how you post.