kitio.aiUndetectable AI vs Sidekicker
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Undetectable AI has the lower starting price: about $10 a month, against $40 for Sidekicker.
AI humanizer and detector that rewrites text to sound more natural
Freemium · $9.99/moAt a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- AI humanizer
- Multi-detector check
- Readability settings
- Paraphraser
- Chrome extension
- AI text humanizer
- Tone and flow adjustment
- AI detector
- Plagiarism checker
| Feature | Undetectable AI | Sidekicker |
|---|---|---|
| Best for | AI humanizer and detector that rewrites text to sound more natural | AI humanizer that rewrites AI drafts into natural-sounding text |
| Category | Writing | Writing |
| Pricing model | Freemium | Paid |
| Starting price | $9.99/mo | $1.95 one-time |
| Free plan | Yes | No |
| Made by | Undetectable AI | AV Wellbeing Solutions Limited |
| Based in | United States | Cyprus |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Undetectable AI has the lower starting price: about $10 a month, against $40 for Sidekicker.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
10K words
$9.99/mo
- 10K words per month
- AI humanizer and detector
- Unlimited AI detecting
20K words
$19/mo
- 20K words per month
- All humanizer features
35K words
$31/mo
- 35K words per month
- All humanizer features
50K words
$42.50/mo
- 50K words per month
- All features from other plans
Business
Custom
- Non-expiring credits
- White labeling
- Priority support
3 plans
7-day trial
$1.95 one-time
- Full access for 7 days
- Renews monthly unless cancelled
Monthly
$39.99/mo
- Humanizer, detector and plagiarism check
Annual
$16.60/mo billed yearly
- Same tools at a lower monthly cost
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Undetectable AI
- Detector and humanizer in one place
- Readability controls
- Free detector checks
- Rewrites can lose nuance
- Using it to evade school rules breaks policies
Sidekicker
- Three writing checks in one plan
- Pays attention to brand tone
- Cheap trial
- No free plan
- Trial rolls into a $39.99 monthly charge
- Rewrites still need a manual read
Which one should you choose?
Choose Undetectable AI if you want:
- Detector and humanizer in one place
- Readability controls
- Free detector checks
Watch out: rewrites can lose nuance.
Choose Sidekicker if you want:
- Three writing checks in one plan
- Pays attention to brand tone
- Cheap trial
Watch out: no free plan.
Undetectable AI vs Sidekicker FAQ
What is the difference between Undetectable AI and Sidekicker?
Undetectable AI: AI humanizer and detector that rewrites text to sound more natural. Sidekicker: AI humanizer that rewrites AI drafts into natural-sounding text. Both are writing tools.
Is Undetectable AI or Sidekicker cheaper?
Undetectable AI has the lower starting price: about $10 a month, against $40 for Sidekicker.
Do Undetectable AI and Sidekicker have free plans?
Undetectable AI: Yes. Sidekicker: No.
Who makes Undetectable AI?
Undetectable AI is made by Undetectable AI, based in United States.
Who makes Sidekicker?
Sidekicker is made by AV Wellbeing Solutions Limited, based in Cyprus.
Which should I choose, Undetectable AI or Sidekicker?
Choose Undetectable AI if you value detector and humanizer in one place and readability controls. Choose Sidekicker if you value three writing checks in one plan and pays attention to brand tone.