AI humanizer apps for iPhone and Android
The store adds three facts a vendor's page does not: the devices, the price when Apple or Google bills it, and the date of the last version. It also adds a hazard: a search for a humanizer brand returns apps from unrelated developers using that name.
Seven apps whose seller matches the company on the vendor's pricing page, ordered by the devices the listing names, widest first, then by release date. Web limits are from the vendor's pages, checked on 8 November 2026 unless dated; store facts were read on 9 November 2026.
Which humanizer app should you install?
- Choose Natural Write if you want one seller's humanizer on iPhone, iPad, Mac and Android and will check which Pro price applies before subscribing.
- Choose Grammarly's app if you want rewrites from a keyboard in every app on iPhone or Android and already use Grammarly.
- Choose WriteHuman's app if you want several variations of a short piece on iPhone or iPad and will avoid the weekly plans.
- Choose Stealth AI if you already pay for StealthGPT and want its study features on a phone.
- Choose Monica if you want a humanizer line inside a general assistant and accept that it is one feature among many.
- Choose QuillBot's app if you want the humanizer as a keyboard mode on iPhone and already use the paraphraser.
- Choose Walter Writes AI's app if you want three strength modes and a detector score on iPhone and will pay the yearly rate rather than the $12.00 in-app monthly one.
How do in-app prices compare with the web?
Store billing often costs more than the vendor's own checkout. Walter Writes AI's App Store listing prices Starter at $12.00 a month or $96.00 a year, against $8 a month billed $96 yearly on the web: the yearly figures match and the monthly one does not, read 9 November 2026. QuillBot's listing prices Annual at $99.99, Semi-Annual at $79.99 and Monthly at $19.99 (QuillBot, App Store listing, read 9 November 2026), against a web Premium rate of $8.33 a month billed annually, checked on 8 November 2026. WriteHuman's listing prices Basic at $17.99 a month and Basic Weekly at $5.99 (WriteHuman, App Store listing, read 9 November 2026), against $20 monthly or $12 a month billed yearly on the web.
| App | In-app monthly | In-app yearly | Web monthly | Web yearly rate | Weekly plan listed |
|---|---|---|---|---|---|
| Walter Writes AI (Starter) | $12.00 | $96.00 | Not stated on the web | $8 a month, billed $96 | No |
| QuillBot (Premium) | $19.99 | $99.99 | Not stated on the web | $8.33 a month billed annually | No |
| WriteHuman (Basic) | $17.99 | Not listed | $20 | $12 a month, billed $144 | Yes, $5.99 |
| Grammarly (Pro) | $29.99, or $17.99 mobile only | $139.99, or $83.99 mobile only | $12 shown, period not stated | Not stated | No |
| Natural Write (Pro) | $9.99 or $19.99 | $59.99 or $119.99 | Not reviewed | Not reviewed | No |
| Stealth AI (Pro) | $9.99 | Not listed for Pro | $29.99 (StealthGPT web Pro) | Not stated | Yes, $5.99 |
| Monica (Pro) | $9.99 | $99.00 | Not stated in the listing | Not stated | Yes, $4.99 |
All in-app prices were read in the US App Store on 9 November 2026 and can differ by country. A weekly plan left running for a month costs more than the monthly plan on every app that lists one.
Which humanizer apps are lookalikes?
An App Store search for "AI humanizer" on 9 November 2026 returned dozens of apps, many using web humanizers' names: apps titled with Undetectable AI, HIX Bypass, BypassGPT, Clever AI, Quillbot, GPTZero, ZeroGPT and Walter were offered by individual developers or small companies whose names do not match the companies behind those web tools. No app from the company behind undetectable.ai was found in that search, and the only Walter app sold by Walter IA Inc. is the one in the table above.
The check is the seller line. Natural Write's listing names Natural Write Inc. as seller and lists iPhone, iPad and Mac (Natural Write, App Store listing, read 9 November 2026); its Google Play listing names the same company, updated 10 September 2026. Grammarly's App Store listing names Superhuman Platform Inc and its Google Play listing Grammarly, Inc., updated 9 November 2026 (Grammarly, App Store listing, read 9 November 2026); both point to grammarly.com.
| Sign on the listing | What it means |
|---|---|
| Seller matches the company on the vendor's pricing page | The app bills to the same account as the web tool |
| Seller is an individual or an unrelated company using a brand name | Nothing ties the app to the web tool; the humanizer inside is unknown |
| Developer website points to the vendor's own domain | The same terms and privacy policy as the web tool |
| Title promises to pass or bypass named detectors | A marketing claim with no method or date; this site reports dated readings only once a run exists |
Natural Write lists its humanizer app for iPhone, iPad, Mac and Android, the widest device coverage of the seven apps here, read 9 November 2026. Walter Writes AI and QuillBot list theirs for iPhone only, read the same day. An AI humanizer app is the vendor's web tool in a phone-sized window with store billing in front of it, so this page orders seven apps by the devices their listings name, prints in-app prices beside web prices, and ranks nothing by a score. The overall list is the full humanizer ranking and the other audiences are in the best-for hub.
Updated
Short answer
Natural Write lists its humanizer app for iPhone, iPad, Mac and Android, the widest device coverage of the seven apps on this page, read 9 November 2026. Walter Writes AI and QuillBot list theirs for iPhone only, read the same day. An AI humanizer app is the vendor's web tool in a phone-sized window with store billing, so this page orders seven apps by the devices their listings name, prints the in-app prices beside the web prices, and records the version and release date. In-app weekly plans appear on three of the seven, and Walter Writes AI's in-app Starter monthly price is $12.00 against $8 a month billed yearly on the web. No tool here carries a score.
Which AI humanizer app runs on your devices?
Mode names are the vendor's own. Price is reported, never ranked. Detector readings under the published method join each tool's block when the first run publishes; the run uses the web tools.
| Order | App and seller | Best for | Main limitation | Devices named | Web free tier | Web cheapest plan | In-app prices listed | Per-request cap (web) | Named modes | Version and release | Review |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 01 | Natural Write: AI Humanizer, Natural Write Inc. | A humanizer and detector on iPhone, iPad, Mac and Android from one seller | Two Pro price pairs appear in the listing, $9.99 and $19.99 monthly, with no statement of which applies; the web plan is not reviewed on this site yet | iPhone, iPad, Mac; Android | Free tier stated, figure not in the listing | Not reviewed on this site | Pro Monthly $9.99 or $19.99, Pro Yearly $59.99 or $119.99, Ultra Year $239.99, word packs from $5.99 | Not stated | Multiple tones, none named | 1.4.4, 21 October 2026 | |
| 02 | Grammarly: AI Keyboard & Voice, Superhuman Platform Inc | Rewrites from a keyboard that works in every app, on iPhone, iPad and Android | The listing names generative rewrites and tone changes, not the humanizer; usage is counted in AI prompts on the web | iPhone, iPad, iMessage; Android | Free account, 100 AI prompts a month | Pro, $12 shown on the plans card, billing period not stated (read 9 November 2026) | Monthly $29.99, Annual $139.99, Mobile Only Monthly $17.99, Mobile Only Annual $83.99 | Not stated | Four preset voices plus a custom voice (web) | 16.2.0, 4 November 2026 | |
| 03 | WriteHuman AI Humanizer, WriteHuman, LLC | Several output variations on iPhone and iPad, with a tone selector | Weekly plans at $5.99 to $12.99 cost more than the monthly plans if left running; 3 free requests a month | iPhone, iPad | 3 requests a month, 250 words each | Basic, 80 requests a month, 600 words each, $12 a month billed yearly or $20 monthly | Basic Weekly $5.99, Pro Weekly $7.99, Ultra Weekly $12.99, Basic $17.99, Pro $26.99, Ultra Monthly $49.99 | 250 free, 600 Basic | Basic, Enhanced quality; custom tone in the app | 1.3.5, 6 November 2026 | |
| 04 | Stealth AI (Study Companion), XYZ AI, Inc. | StealthGPT's study app with an essay creator and a detector, on iPhone and iPad | The listing describes an AI detector with "quick tweaks" and an essay creator, not a humanizer by name, and carries a disclaimer against academic dishonesty | iPhone, iPad | Free trial per the listing, figure not stated | Pro, 50,000 words a month, $29.99 monthly (web StealthGPT) | Pro Weekly $5.99, Pro Monthly $9.99, Advanced Weekly $9.99, Advanced Monthly $18.99, Advanced Annually $84.99 | 1,000 words (web Pro) | Not stated | 1.4.0, 30 August 2026 | |
| 05 | Monica AI: Ultimate AI Assist, Butterfly Effect Pte. Ltd. | A humanizer line inside a general assistant on iPhone and iPad | The humanizer is one feature among dozens; a Pro Weekly plan at $4.99 is listed | iPhone, iPad | Limited free use per the listing | Premium; price not stated in the listing | Pro Weekly $4.99, Pro Monthly $9.99, Pro Yearly $99.00, Unlimited Monthly $24.99 | Not stated | None named for the humanizer | 5.14.0, 21 July 2026 | |
| 06 | Quillbot-AI Writing & Keyboard, QuillBot, a Learneo Inc. business | The humanizer as a keyboard mode on iPhone | iPhone only; in-app Annual is $99.99 against the web's $8.33 a month billed annually; free Basic mode takes 125 words per input | iPhone | 125 words per input, Basic mode; 3 Advanced uses | Premium, $8.33 a month billed annually | Monthly $19.99, Semi-Annual $79.99, Annual $99.99 | 125 words free | Basic, Advanced (web); Humanizer mode in the keyboard | 2.22.0, 2 November 2026 | |
| 07 | Walter Writes: AI Humanizer, Walter IA Inc. | Three rewrite modes and a detector score on iPhone | iPhone only; in-app Starter monthly is $12.00 against $8 a month billed yearly on the web; Starter's 750-word request cap applies | iPhone | 300-word trial, no card | Starter, 30,000 words a month, $8 a month billed $96 yearly | Starter Monthly $12.00, Starter Yearly $96.00, Pro Monthly $23.00, Pro Yearly $155.99, Elite Monthly $47.00, Elite Yearly $314.99 | 750 words (Starter) | Simple, Standard, Enhanced | 1.0.7, 16 September 2026 |
How the ranking works
- Inputs
- 24 texts24 AI-written inputs across six genres plus 6 human-written controls, the same set for every tool.
- Detectors
- 5 namedGPTZero, Originality.ai, Copyleaks, Pangram and ZeroGPT.
- Weights
- Meaning kept35
- Errors introduced20
- Detector pass rate30
- Limits and access15
- Run date
The seven apps on the same fields
Every free tier gets the same fields, in rank order. The disc is the sample number it was poured under in the full run.
Sample 01: Natural Write: AI Humanizer
Natural Write's app is sold by Natural Write Inc. for iPhone, iPad and Mac, version 1.4.4 released 21 October 2026, with an Android listing, read 9 November 2026.
- Best for
- one seller's humanizer and detector across iPhone, iPad, Mac and Android.
- Main limitation
- two Pro price pairs appear in the listing, and the web plan is not yet reviewed on this site.
- Free tier
- stated in the listing without a figure.
- Cheapest plan
- Pro Monthly, $9.99 or $19.99 in-app, read 9 November 2026.
- Per-request cap
- not stated.
- Named modes
- multiple tones, none named.
Sample 02: Grammarly: AI Keyboard & Voice
Grammarly's app is sold by Superhuman Platform Inc for iPhone, iPad and iMessage, version 16.2.0 released 4 November 2026, with an Android listing updated 9 November 2026.
- Best for
- rewrites from a keyboard in every app, on iPhone or Android.
- Main limitation
- the listing names generative rewrites and tone changes, not the humanizer, and web usage is counted in AI prompts.
- Free tier
- free account, 100 AI prompts a month on the web.
- Cheapest plan
- Pro, $12 shown on the web plans card, billing period not stated, read 9 November 2026; in-app Mobile Only Monthly $17.99.
- Per-request cap
- not stated.
- Named modes
- four preset voices plus a custom voice on the web.
Sample 03: WriteHuman AI Humanizer
WriteHuman's app is sold by WriteHuman, LLC for iPhone and iPad, version 1.3.5 released 6 November 2026, read 9 November 2026.
- Best for
- several output variations of a short piece on iPhone or iPad.
- Main limitation
- weekly plans at $5.99 to $12.99 cost more than monthly if left running; 3 free requests a month at 250 words.
- Free tier
- 3 requests a month, 250 words each.
- Cheapest plan
- Basic, 80 requests a month, 600 words each, $12 a month billed yearly or $20 monthly on the web, checked on 8 November 2026; $17.99 monthly in-app.
- Per-request cap
- 250 words free; 600 on Basic.
- Named modes
- Basic, Enhanced quality; a custom tone selector in the app.
Stealth AI (Study Companion)
StealthGPT's app is sold by XYZ AI, Inc. for iPhone and iPad, version 1.4.0 released 30 August 2026, and its listing describes an essay creator and a detector rather than a humanizer by name, read 9 November 2026.
- Best for
- existing StealthGPT subscribers who want the study features on a phone.
- Main limitation
- not a stand-alone humanizer, and the listing sells weekly plans at $5.99 and $9.99.
- Free tier
- a free trial per the listing, figure not stated.
- Cheapest plan
- StealthGPT Pro on the web, 50,000 words a month, $29.99 monthly, checked on 8 November 2026; in-app Pro Monthly $9.99.
- Per-request cap
- 1,000 words on web Pro.
- Named modes
- not stated.
Sample 05: Monica AI: Ultimate AI Assist
Monica's app is sold by Butterfly Effect Pte. Ltd. for iPhone and iPad, version 5.14.0 released 21 July 2026, and lists an AI Humanizer among many features, read 9 November 2026.
- Best for
- a humanizer line inside a general assistant.
- Main limitation
- one feature among dozens, with a $4.99 weekly plan listed.
- Free tier
- limited free use per the listing.
- Cheapest plan
- Pro Monthly, $9.99 in-app, read 9 November 2026.
- Per-request cap
- not stated.
- Named modes
- none named for the humanizer.
Sample 06: Quillbot-AI Writing & Keyboard
QuillBot's app is sold by QuillBot, a Learneo Inc. business, for iPhone only, version 2.22.0 released 2 November 2026, and says you can humanize AI text using the Humanizer mode in its AI keyboard, read 9 November 2026.
- Best for
- the humanizer as a keyboard mode on iPhone.
- Main limitation
- iPhone only, and in-app Annual at $99.99 against the web's $8.33 a month billed annually.
- Free tier
- 125 words per input, Basic mode; 3 Advanced uses, checked on 8 November 2026.
- Cheapest plan
- Premium, $8.33 a month billed annually on the web; $19.99 monthly in-app.
- Per-request cap
- 125 words free; none stated on Premium.
- Named modes
- Basic, Advanced; Humanizer mode in the keyboard.
Sample 07: Walter Writes: AI Humanizer
Walter Writes AI's app is sold by Walter IA Inc. for iPhone only, version 1.0.7 released 16 September 2026, and names Simple, Standard and Enhanced modes, a detector score, history and over 80 languages, per its App Store listing read 9 November 2026. No Google Play listing from Walter IA Inc. was found that day.
Vendor site: Walter Writes AI.
- Best for
- three strength modes and a detector score on iPhone.
- Main limitation
- iPhone only, and in-app Starter monthly is $12.00 against $8 a month billed yearly on the web; Starter's 750-word request cap applies.
- Free tier
- 300-word trial, no card.
- Cheapest plan
- Starter, 30,000 words a month, $8 a month billed $96 yearly on the web, checked on 8 November 2026; $96.00 yearly or $12.00 monthly in-app.
- Per-request cap
- 750 words on Starter.
- Named modes
- Simple, Standard, Enhanced.
Why do lists of humanizer apps disagree?
Most are built from store search results, which mix vendor apps with lookalikes, and rank by star ratings or download counts, which measure popularity rather than output and are not reported here. This page lists only apps whose seller matches the company on the vendor's pricing page, orders by device coverage and prints store prices beside web prices. Free tiers across all the web tools are compared on the free humanizer page, and every tool's full verdict is in the reviews hub.
Questions about AI humanizers for mobile app
Is there an AI humanizer app for iPhone?
Yes: on 9 November 2026 the App Store carried humanizer or rewrite apps published by Natural Write Inc., Superhuman Platform Inc for Grammarly, WriteHuman LLC, Butterfly Effect for Monica, XYZ AI for StealthGPT's Stealth AI, QuillBot and Walter IA Inc., each tied to the vendor's web account.
Is there an AI humanizer app for Android?
Two of the seven vendors on this page had a Google Play listing on 9 November 2026: Grammarly, updated 9 November 2026, and Natural Write, updated 10 September 2026; no Play listing from Walter IA Inc., WriteHuman LLC or QuillBot was found in the same search.
Is the Undetectable AI app official?
An App Store search for AI humanizer on 9 November 2026 returned apps titled with Undetectable AI, HIX Bypass, BypassGPT, Clever AI and other brand names whose sellers were individual developers, not the companies behind those web tools; no app from the company behind undetectable.ai was found.
Do humanizer apps cost more than the website?
Sometimes: Walter Writes AI's in-app Starter monthly plan is $12.00 against $8 a month billed yearly on the web, and QuillBot's in-app Annual plan is $99.99 against a web Premium rate of $8.33 a month billed annually, both read 9 November 2026; the yearly in-app prices are closer to the web.
Which humanizer apps sell weekly subscriptions?
WriteHuman lists Basic, Pro and Ultra weekly plans at $5.99, $7.99 and $12.99, Stealth AI lists Pro and Advanced weekly at $5.99 and $9.99, and Monica lists Pro Weekly at $4.99, all in the App Store on 9 November 2026; a weekly plan left running costs more than the monthly one.
Does the Walter Writes AI app have the same modes as the website?
Yes: the App Store listing names Simple, Standard and Enhanced rewrite modes, a detector score and history, and sells Starter, Pro and Elite plans monthly or yearly, read 9 November 2026; the web plan's 750-word Starter request cap is not restated in the listing.
Can I humanize text for free in an app?
Every app on this page installs free and runs the vendor's free tier or trial: Walter Writes AI's 300-word trial, QuillBot's 125-word Basic mode, WriteHuman's 3 requests a month and Grammarly's 100 AI prompts a month, with Natural Write, Monica and Stealth AI stating a free tier without a figure in the listing.
Is a humanizer app different from the web tool?
No vendor says so: the listings describe the same humanizer with a phone keyboard or share sheet in front of it, and the plan limits are those of the account you sign in with; the method on this site runs the web tools.
Sources
- QuillBot, App Store listing, read 9 November 2026: iPhone only; Humanizer mode in the keyboard; in-app prices; version 2.22.0
- WriteHuman, App Store listing, read 9 November 2026: iPhone and iPad; weekly and monthly in-app prices; version 1.3.5
- Natural Write, App Store listing, read 9 November 2026: iPhone, iPad and Mac; seller; in-app prices; version 1.4.4
- Grammarly, App Store listing, read 9 November 2026: iPhone, iPad and iMessage; seller; in-app prices; version 16.2.0
- App Store listings for Walter Writes AI, Stealth AI and Monica, and Google Play listings for Grammarly and Natural Write, read 9 November 2026: Sellers, devices, in-app prices, versions and update dates
- Vendor pricing and product pages, checked 8 and 9 November 2026: Web free tiers, plans, request caps and modes
Revision log
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