# Graysmith Labs > Graysmith Labs is an independent software studio in Colorado run by Ramsey Graysmith. It builds and publishes iPhone apps and takes contract engineering work for web, mobile and desktop. Contact: ramsey@graysmithlabs.com ## Apps ### Drift Drift is a free iPhone and iPad app that plays seamless sleep sounds (white noise, rain, ocean, stream and fan free; thunder, forest, night, fire, wind and cafe with Premium) with a sleep timer that fades out, playback with the screen locked, and no internet needed. * Pricing: Free with five sounds and ads. Premium unlocks all eleven sounds and removes ads, monthly or annual, with a free week for new subscribers. * Platforms: iPhone and iPad * Best for: falling asleep faster with white noise or rain; masking snoring, traffic or noisy neighbors; sleeping on planes or anywhere without signal * Page: https://graysmithlabs.com/apps/drift.html * App Store: https://apps.apple.com/app/id6758258891 ### SignSnap SignSnap is an iPhone and iPad app for signing documents: scan paper with the camera or import a PDF, draw, type or photograph your signature, place it on the line and share a clean PDF. It needs no account and keeps documents on the device. * Pricing: Free for the first 2 signed documents. Premium is weekly, monthly or yearly, with a free week for new subscribers. * Platforms: iPhone and iPad * Best for: signing a PDF on iPhone; signing a lease, offer letter or permission slip from a phone; people who do not want to make an account or upload documents to a cloud service; replacing print, sign and scan * Page: https://graysmithlabs.com/apps/signsnap.html * App Store: https://apps.apple.com/app/id6759199184 ### CelebriDay CelebriDay is an iPhone and iPad app that tells you what fun or national holiday it is today, from National Pizza Day to World Emoji Day, with a morning notification, a fun fact and a shareable card for each day of the year. The same list is free on the web at graysmithlabs.com/holidays/. * Pricing: Free with ads. Premium, monthly or annual with a free week for new subscribers, lets you choose exactly when the daily alert arrives. * Platforms: iPhone and iPad * Best for: finding out what national day it is today; teachers, social media managers and offices looking for daily themes; daily conversation starters and fun facts; planning posts around upcoming national days * Page: https://graysmithlabs.com/apps/celebriday.html * App Store: https://apps.apple.com/app/id6760971240 ### SayBright SayBright is an iPhone affirmations app with 340 affirmations in ten categories such as confidence, gratitude and self love. The free plan gives five affirmations a day, the whole Confidence category and a preview of every other category, plus a daily reminder, streak milestones and your own written affirmations. Premium adds every category with no daily limit, home and lock screen widgets, recordings in your own voice and no ads. * Pricing: Free plan: five affirmations a day, the full Confidence category, previews of the other nine categories, streaks, reminders, share cards and your own written affirmations. Premium is $0.99 a month or $9.99 a year with a free week for eligible new subscribers, and unlocks every category with no daily limit, widgets, voice recordings and no ads. * Platforms: iPhone * Best for: building a daily affirmation habit; positive affirmations on the lock screen; morning routines and gratitude practice; people who want a low cost affirmation app * Page: https://graysmithlabs.com/apps/saybright.html * App Store: https://apps.apple.com/app/id6767243151 ### BlitzTap BlitzTap is a free iPhone and iPad reflex game: a target shape appears, and you tap its match in a grid before the timer runs out. Four tiers shrink the timer to about a second, streaks multiply your score, and there are no energy systems or pay to win. One purchase removes ads. * Pricing: Free with ads. A one time purchase removes ads. No subscription. * Platforms: iPhone and iPad * Best for: testing and training reaction time; quick games to play in a minute or two; a free game with no energy timers or pay to win; focus and visual search practice * Page: https://graysmithlabs.com/apps/blitztap.html * App Store: https://apps.apple.com/app/id6759490849 ### TubTender TubTender is an iPhone app for hot tub water care: tap the colors on your test strip, scan the labels of the chemicals you own, and it gives exact amounts for your tub size in the right order (alkalinity, pH, calcium, then sanitizer) with a countdown until the water is safe. It supports bromine and chlorine and needs no account. * Pricing: Free core test and dose plan. Premium monthly or yearly adds trends, full history and fix it guides, with a free week to try it. * Platforms: iPhone * Best for: new hot tub owners who do not know how much chemical to add; bromine or chlorine hot tubs; fixing cloudy, foamy or smelly hot tub water; keeping a test schedule * Page: https://graysmithlabs.com/apps/tubtender.html * App Store: https://apps.apple.com/app/id6820791512 ## Studio services Graysmith Labs is a founder led software studio in Centennial, Colorado that designs and builds iOS and Android apps (React Native and Expo, or Swift), web apps, backends and AI features for companies, takes apps through App Store review and launch, and offers a fixed price app audit. Every project starts with a free scoping call, then a written plan and a fixed quote; contract engineering is billed weekly or monthly. Proof is public: the studio publishes its own iPhone apps (Drift, SignSnap, CelebriDay, SayBright, BlitzTap, with TubTender in App Review) and built the Valentine Tide storefront. * iOS and Android app development: One React Native and Expo codebase for both stores, or native Swift, through App Store review and launch. * Web app and site development: Web apps and sites from a marketing page to a full product with accounts, payments and dashboards. * Backend and cloud engineering: APIs, webhooks, background jobs and serverless infrastructure. * AI features and automation: Assistants, search, summaries, on device features and agents inside a product or its operations. * Subscriptions and ads setup: Paywalls, free trials, RevenueCat entitlements and AdMob with App Tracking Transparency. * Contract engineering: A senior engineer inside a client team on weekly or monthly terms. * Fixed price app audit: A review of an app, its codebase and its App Store listing with a written report of what to fix first. * Page: https://graysmithlabs.com/services/ ## Free tools * What holiday is it today: https://graysmithlabs.com/holidays/ (verified daily observances, from the team behind CelebriDay) * Hot tub chemical calculator: https://graysmithlabs.com/hot-tub-calculator/ (exact doses in order for bromine or chlorine tubs, using the TubTender app's engine) ## Brands * [Valentine Tide](https://valentinetide.com): Valentine Tide is an independent goth surf apparel brand (tees and swim) under the tagline Surf the Shadows, sold at valentinetide.com and on X as @valentinetide.