Comparison

AI Email Enhancer vs Ninput

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AI Email Enhancer

This tool assists in refining email communication by adjusting the tone to be more professional, polite, or persuasive. It helps users craft better messages for various situations. The application is designed to improve overall email effectiveness.

Highlights
  • Enhance email tone
  • Sound more professional
  • Sound more polite
  • Sound more persuasive
  • Email writer assistant
Features
Read full description

Tone: AI Email Enhancer helps you enhance your email tone! Sound more professional, polite, persuasive and more! End User License Agreement: Read our terms at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ninput

Read full description

Type less. Say more. Ninput brings private, on-device AI to your keyboard, helping you complete words, phrases, and sentences in messages, emails, and notes. SMART COMPLETION Get suggestions based on what you're writing. Tap a candidate to keep your thoughts moving. ENGLISH & CHINESE PINYIN Switch between English typing and Chinese Pinyin. Choose English or Chinese prediction results to suit your conversation. PRIVATE & OFFLINE Your keyboard input, predictions, and learned vocabulary stay on your device. AI predictions run locally, with no cloud uploads. Once the system model is ready, you can use predictions offline. FREE TO TRY Explore smart input with a free daily allowance. When it runs out, regular typing and basic suggestions remain available. The allowance resets each day. NINPUT PRO Subscribe monthly or yearly to remove the daily smart-input limit. Prices are shown before purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends; renewal is charged within the final 24 hours. Manage or cancel in Settings > [your name] > Subscriptions. REQUIREMENTS iOS 26 or later. AI predictions require a compatible device with Apple Intelligence enabled and its on-device model ready. Availability varies by language and region. Initial model download may require an internet connection. Regular typing remains available when AI predictions are unavailable. Privacy Policy: https://www.ningdom.com/privacy.html Terms of Use: https://www.ningdom.com/terms.html

Screenshots

AI Email Enhancer4 screens
Ninput4 screens

Verdict

The call

The clearest difference is update cadence: AI Email Enhancer at every 2 weeks against Ninput's every 2 months. AI Email Enhancer also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AI Email Enhancer sells 2 in-app purchases, starting at $2.99 per month and Ninput sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AI Email Enhancer ships an update every 2 weeks, Ninput every 2 months. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
AI Email Enhancer versus Ninput: the parameters behind the verdict, then further details
ParameterAI Email EnhancerNinput
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better26.0
Further details — not scored
Size17 MB13 MB
Age rating4+4+
DeveloperReady Set JoyBeijing Ningdom Technology Co., Ltd.

In-app purchases

2 purchases

AI Email Enhancer

Subscriptions2
  • Unlimited Monthly Plan$2.991 Month
  • Unlimited Weekly Plan3 Days trial$2.997 Days
2 purchases

Ninput

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$14.991 Year

Questions

Is AI Email Enhancer free?
AI Email Enhancer is free to download, with in-app purchases available.
Is Ninput free?
Ninput is free to download, with in-app purchases available.
Do AI Email Enhancer or Ninput have ads?
Neither AI Email Enhancer nor Ninput shows ads.
Which is updated more often, AI Email Enhancer or Ninput?
AI Email Enhancer ships an update every 2 weeks, and Ninput every 2 months. Most recently, AI Email Enhancer was updated on October 13, 2026 and Ninput on October 25, 2026.

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