Choosing the right content approval tool can save your agency dozens of hours every month — or waste them if you pick the wrong one. With dozens of tools on the market, the choice is not straightforward. This article cuts through the noise with a head-to-head comparison of the six most widely used platforms in 2026.
We evaluated each tool across six key dimensions: pricing, supported platforms, multilingual interface, visual feedback features, post limits, and suitability for agencies with international clients.
Full feature comparison table
| Feature | PostKeno | Planable | Kontentino | Gain | Loomly | Sprout Social |
|---|---|---|---|---|---|---|
| Starting price | ~11 EUR/mo | 33 USD/mo | 59 EUR/mo | Free / 99 USD | 42 USD/mo | 249 USD/mo |
| ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| TikTok | ✓ | ✓ | ▬ | ▬ | ✓ | ✓ |
| ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| YouTube | ✓ | ✗ | ✗ | ✗ | ▬ | ✓ |
| Pin comments on images | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| Video timestamp comments | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| No post limits | ✓ | ▬ | ✗ | ▬ | ✓ | ✓ |
| ZIP download | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| Auto-reminders | ✓ | ▬ | ▬ | ✓ | ▬ | ✓ |
| No-login client view | ✓ | ✓ | ▬ | ✓ | ✗ | ✗ |
| Interface languages | 6 (PL/EN/DE/FR/ES/IT) | EN only | SK/CZ/EN | EN only | EN only | EN only |
| 14-day free trial | ✓ | ✓ | ▬ | ✓ (free tier) | ✓ | ✗ |
✓ = yes ✗ = no ▬ = partial / depends on plan. Prices as of March 2026.
1. PostKeno — best for multilingual agencies
PostKeno was built from the ground up for marketing agencies that manage content approval workflows. It is the only tool on this list that supports six interface languages (Polish, English, German, French, Spanish and Italian), making it ideal for agencies serving clients across Europe.
The standout features are pin comments on images and video timestamp comments — both absent from every competitor on this list. Instead of clients writing "the logo in the top right corner should be moved", they simply click on the image at the exact location and leave a comment pinned to that spot. This alone eliminates the most common source of revision miscommunication.
Key advantages:
- 6 interface languages — clients see the platform in their native language
- No post limits on any plan
- Supports YouTube (the only budget tool that does)
- PIN comments on images — visual feedback without ambiguity
- Video timestamp comments
- ZIP download for bulk content export
- Auto-reminders — clients get nudged without account manager involvement
- 14-day free trial, no credit card required
Limitations:
- Newer to the market than Planable or Sprout Social
- Smaller third-party integration ecosystem compared to enterprise tools
2. Planable — polished but English-only
Planable is one of the most well-known content approval and scheduling tools on the market. Its interface is clean and the approval workflow is well-designed. The tool has strong visual content previews showing exactly how posts will look on each platform.
However, Planable has significant limitations that make it less suitable for many agencies. The interface is English only — there is no way to present the client approval view in German, French or Spanish. YouTube is not supported. Pin comments on images and video timestamp comments are not available. On lower plans, there are post limits that can become constraining for busy agencies.
Key advantages:
- Polished, intuitive interface
- Strong content calendar view
- Multi-workspace support
- Good for English-speaking markets
Limitations:
- English interface only — no multilingual client view
- No YouTube support
- No pin comments on images
- No video timestamp comments
- No ZIP download
- Post limits on entry plans
- Higher price than PostKeno
3. Kontentino — strong in Central Europe, limited elsewhere
Kontentino is a Slovak-origin social media management tool with a focus on agencies. It has a well-developed approval workflow and a good content calendar. Its base of users is concentrated in Central Europe (Slovakia, Czech Republic, Poland).
The tool supports Slovak, Czech and English interfaces — which covers its core market but leaves out Western European languages. At 59 EUR per month for the entry plan, it is significantly more expensive than PostKeno, and it imposes a 100-post limit on the base plan which can be restrictive for prolific content producers.
Key advantages:
- Mature approval workflow
- Good content calendar
- Slovak and Czech interface options
- Established player with good support
Limitations:
- 100 post limit on base plan
- No DE, FR, ES, IT interface
- No YouTube support
- No pin comments on images
- Higher entry price than PostKeno
4. Gain — good free tier, limited growth path
Gain is a US-based content approval tool with a generous free tier. It offers a clean approval workflow and solid email notification system. The free tier makes it accessible for very small agencies or freelancers testing the concept of structured approval.
However, the jump from free to paid is steep at 99 USD per month. The interface is English only. There is no YouTube support, no pin comments on images, and no video timestamp comments. For growing agencies handling more than a handful of clients, the pricing can become hard to justify compared to alternatives.
Key advantages:
- Free tier available
- Clean, simple approval workflow
- Good email notifications
- Well-suited for US market agencies
Limitations:
- English only
- Steep price jump on paid plans (99 USD)
- No YouTube
- No pin comments or video timestamps
- No ZIP download
5. Loomly — social media scheduling first, approval second
Loomly is primarily a social media scheduling tool that also offers approval workflows. Its strengths are in content ideation features, content calendar management and brand consistency tools. The approval functionality is present but not as deep as dedicated approval tools.
The interface is English only. There are no pin comments on images, no video timestamp comments, and no ZIP download. For agencies where scheduling and publishing are the primary need and approval is a secondary concern, Loomly can work well. For agencies where approval workflow is the core bottleneck, more specialised tools will serve better.
6. Sprout Social — enterprise-grade, enterprise price
Sprout Social is a comprehensive social media management platform with approval workflows, analytics, social listening and much more. It is built for large enterprise teams and agencies with significant budgets. The feature set is extensive, but so is the price tag.
At 249 USD per month minimum, it is entirely out of reach for small to mid-sized agencies. For large agencies that need the full suite of social media management features and have the budget to match, it is a strong option. For agencies whose primary pain point is content approval, it is over-engineered and over-priced.
Which tool should you choose?
The right choice depends on your agency's specific situation:
- Best overall for most agencies: PostKeno — the combination of multilingual support, no post limits, visual feedback features and competitive pricing makes it the most complete solution for the majority of marketing agencies in 2026.
- Best for English-speaking markets only: Planable — polished interface and well-established in the UK, US and Australian markets.
- Best for Slovak/Czech agencies: Kontentino — native language support and an established regional presence.
- Best for freelancers testing approval workflows: Gain — the free tier allows testing without commitment.
- Best for enterprise teams needing full social media suite: Sprout Social — if you have the budget and need everything in one place.
FAQ — frequently asked questions
What is the best content approval tool for marketing agencies in 2026?
For most marketing agencies, PostKeno offers the best combination of features and price: it supports 6 languages, has no post limits, supports Instagram, Facebook, TikTok, LinkedIn and YouTube, and costs from around 11 EUR per month.
What features should a content approval tool have?
Key features: a client-facing approval view without requiring registration, visual feedback (pin comments on images), video timestamp comments, automatic reminders, version history, multi-platform support, and ideally a multilingual interface for international agencies.
Is there a free content approval tool?
Gain has a free tier, but it is limited and English-only. PostKeno offers a 14-day free trial with no credit card required, giving agencies ample time to test all features before committing.
What is the difference between PostKeno and Planable?
The main differences: PostKeno supports 6 interface languages vs Planable's English only; PostKeno has no post limits; PostKeno supports YouTube; PostKeno costs from ~11 EUR vs Planable from 33 USD. PostKeno also uniquely offers pin comments on images and video timestamp comments.
Which content approval tool is best for European agencies?
For European agencies, PostKeno is the top choice: it supports 6 European languages (PL, EN, DE, FR, ES, IT), has no post limits, offers competitive pricing, and is built with the needs of European market clients in mind.