Reply Lab: AI Texting Keyboard
What is Reply Lab?
An AI keyboard that suggests and polishes text replies inside messaging apps.
Reply Lab is a Utilities app that generates AI reply suggestions from its keyboard. It offers reply tones, screenshot analysis, custom modes, and controls for reply length.
Pricing. Reply Lab is free to download, with in-app purchases on the App Store.
Good for
- Drafting replies to dating app messages
- Writing professional responses to work messages
- Finding wording for awkward conversations
Screenshots
Why this app is in B tier
B tier follows from that score within this list. The full explanation, as data.
Reply Lab scores 78 out of 100: rating 73, rating count 55, App Store search rank 85, update recency 100. The four parts are averaged and B tier follows from that score within this list.
Description
Never stare at a text wondering what to say. Reply Lab is the AI keyboard that writes the perfect reply inside any app you type in: iMessage, WhatsApp, Instagram, Snapchat, Tinder, Slack. No switching apps. No pasting your conversation into a chatbot. Everything happens right where you're texting.
HOW IT WORKS
Add Reply Lab as a keyboard, switch to it with the globe icon, and generate AI replies right where you are typing. Everything happens inside the keyboard. Even screenshot analysis runs in place, without ever leaving the conversation.
KEY FEATURES
Read more
Works Everywhere. One keyboard for every messaging app. Dating, work, friends, and family.
15+ Reply Tones. Professional, Flirty, Funny, Savage, Sarcastic, Smooth, Dating Coach, and more. Match the vibe of any conversation.
In-Keyboard Screenshot Analysis. Paste a message or a screenshot of a conversation and get context-aware reply suggestions directly from the keyboard.
Custom AI Modes. Write your own instructions to build fully personalized reply styles that respond exactly how you want.
Community Marketplace. Publish your custom modes for others to discover, and browse AI personalities created by the community.
Improve Mode. Highlight any draft reply and let AI polish it without losing your voice.
Length Control. Short, Medium, or Long. Replies sized to fit the moment.
PERFECT FOR
Dating apps. That match finally messaged you back and the pressure is on. Get replies with actual rizz, from smooth openers to comebacks when they leave you on read.
Work messages. Your boss texts at 9pm and "k" is not an option. Draft the professional version in seconds and get back to your evening.
Group chats. Someone roasts you in front of everyone. Reply Lab has the clapback ready before the laughing emojis stop.
Awkward conversations. Rescheduling plans, saying no, texting your ex back (or deciding not to). Get wording that hits the right note when the stakes feel high.
WHY A KEYBOARD AND NOT ANOTHER AI APP
Because the conversation is already on your screen. Switching apps to describe your situation to a chatbot, copying its answer, and pasting it back kills the moment. Reply Lab lives where you type, reads the context you give it, and drops the reply straight into the text field. The fastest path from "what do I even say" to sent.
FREE TO USE
Get free AI replies every day, plus free screenshot analyses to start. Upgrade to Reply Lab Pro for unlimited text replies and up to 50 screenshot analyses per day.
REPLY LAB PRO
Reply Lab Pro is available as an auto-renewable subscription or a one-time purchase:
Weekly: $1.99 per week
Annual: $29.99 per year, best value
Lifetime: $79.99 one time, never renews
Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription anytime in Settings > Apple ID > Subscriptions. The Lifetime option is a single payment and does not auto-renew.
PRIVACY
Reply Lab requires Full Access to communicate with our AI service for reply generation. We do not store your conversations, sell your data, or use your messages for AI training.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://replylab.app/privacy
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Questions about Reply Lab
How does Reply Lab work?
Add it as a keyboard, switch to it with the globe icon, and generate AI replies while typing.
Can it use a screenshot of a conversation?
Yes. You can paste a screenshot and get context-aware reply suggestions directly from the keyboard.
What does Reply Lab Pro cost?
The listing offers a $1.99 weekly subscription, a $29.99 annual subscription, and a $79.99 one-time purchase.
Is Reply Lab free?
Reply Lab is free to download, with in-app purchases.
Is Reply Lab right for me?
Reply Lab is built for drafting replies to dating app messages, writing professional responses to work messages, finding wording for awkward conversations. It sits in the message reply writing list on AppTierList.
Is Reply Lab worth it?
Reply Lab is B tier, ranked #6 of 37 message reply writing apps with a score of 78 out of 100, from a 4.0 App Store rating across 28 ratings. Good, and 5 apps rank above it.
How does Reply Lab compare to Cue?
Reply Lab is B tier at 78; Cue is B tier at 78. They score the same. Reply Lab is free to download, with in-app purchases, Cue is free to download, with in-app purchases.
How often is Reply Lab updated?
Reply Lab was last updated on 2026-09-21, 54 days ago.
Alternatives
Top rated in Message Reply Writing
Best free
Categories
All the facts
Ranking
- Lists
- Message Reply Writing (B tier, #6) · Rizz Keyboards (C tier, #27) · Dating Chat Assistance (#67, beyond the tiered top)
- Tier
- B (Good)
- Score
- 78 / 100
- Rank in list
- #6 of 41
- Ranking certainty
- settled
Ratings
- App Store rating
- 4.0 out of 5, every App Store country
- Ratings
- 28
App
- Price
- Free + IAP
- App Store category
- Utilities
- Current version
- (54 days ago)
- Size
- 20 MB
- Requires
- iOS 17 or later
- Age rating
- 9+
- Languages
- 1
- Runs on
- iPhone, iPad
Links
- Developer pages
- Support · Privacy policy
- Maker
- not verified
- As data
- JSON · why it ranks here
App Store data read · reviews · ranking