Head to head
OpenTweet vs PostOnce (postonce.app)
Last updated 15 October 2026
OpenTweet focuses on X publishing through a calendar, REST API, CLI and MCP. It also cross-posts to Bluesky and LinkedIn personal profiles, with per-network delivery results.
- From
- Check current price
- Free scheduling
- No
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
Bottom line
OpenTweet is the pick for developers automating X content with API, MCP and feed connectors. PostOnce (postonce.app) fits local businesses publishing to several networks better, and it reaches Instagram and Facebook among others, which OpenTweet doesn't.
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.
- OpenTweet posts to 3 networks, PostOnce (postonce.app) to 9.
- Only PostOnce (postonce.app) reaches Instagram, Facebook, TikTok, Pinterest, YouTube, and Threads.
Features compared
| Feature | OpenTweet | PostOnce (postonce.app) |
|---|---|---|
| AI captions | Yes | Not assessed |
| Basic analytics | Yes | Yes |
| Advanced reports | Not assessed | Not assessed |
| Bulk upload | Not assessed | Not assessed |
| Evergreen recycling | Yes | Yes |
| Team roles | Not assessed | Not assessed |
| Approvals | Not assessed | Not assessed |
| Link in bio | Not assessed | Not assessed |
Platforms compared
| Network | OpenTweet | PostOnce (postonce.app) |
|---|---|---|
| No | Auto | |
| No | Auto | |
| X (Twitter) | Auto | Auto |
| Auto | Auto | |
| TikTok | No | Auto |
| No | Auto | |
| YouTube | No | Auto |
| Threads | No | Auto |
| Bluesky | Auto | 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.
OpenTweet
Pro
Displayed $19.99/month; confirm billing currency
- Accounts
- 1
- Scheduled posts
- Unlimited
- One X account; twenty posts/day
- Thirty URL posts/month; ten AI generations/day
- Evergreen pool ten posts, two repeats/day
Advanced
PopularDisplayed $29/month; confirm billing currency
- Accounts
- 3
- Scheduled posts
- Unlimited
- Three X accounts; one hundred posts/day
- Three hundred URL posts/month; fifty AI generations/day
Agency
Displayed $49/month; confirm billing currency
- Accounts
- 10
- Scheduled posts
- Unlimited
- Ten X accounts; three hundred posts/day
- Six hundred URL posts/month; one hundred fifty AI generations/day
- Plans scale X accounts, daily publications, URL-post allowance and AI/API limits. The current Pro monthly display is $19.99.
- Trial is seven days but omits evergreen and Articles and restricts link posts, search and analysis. Official trial billing descriptions conflict; review checkout.
- Bluesky and LinkedIn cross-posting is documented. Annual equivalents are displayed elsewhere as $15.83/$24.17/$40.83, but confirm currency and annual invoice before using numerical comparisons.
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.
Pros and cons
OpenTweet
- REST API, MCP, RSS and GitHub connectors
- AI model choice and daily generation allowances
- Evergreen queues and a visual calendar
- Seven-day trial; check checkout terms
- Detailed per-plan publication, URL and AI quotas
- No video cross-posting to Bluesky or LinkedIn
- Trial feature and billing restrictions
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.
OpenTweet vs PostOnce (postonce.app): FAQ
- Is OpenTweet or PostOnce (postonce.app) 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 OpenTweet or PostOnce (postonce.app) 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, OpenTweet or PostOnce (postonce.app)?
- OpenTweet is the stronger pick for developers automating X content with API, MCP and feed connectors, while PostOnce (postonce.app) is the better fit for local businesses publishing to several networks. We don't score them; the right call comes down to how you post.