
Couper.io
Grist
Google Sheets
Airtable
Zapier
Stein
Supermetrics
Automatically Sync Google Sheets with your Business Systems. No-code reporting and analysis tool.

CiraSync
Simplish
Clariti.app
Socialsuite
SteerIO
AhoyTeam
Sunsama
Team calendar, shift schedules and rotations in Slack and Microsoft Teams

Which is more popular?
Based on our record, Coefficient.io should be more popular than TurnShift. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | coefficient.io | turnshift.app |
| Pricing | ||
| Platforms | — | |
| Company | 2019 | Startup from France · 1 - 9 employees · 2021 |
| Listed in |
In their own words, as submitted to SaaSHub.


Coefficient is a sidebar app for Google Sheets. Coefficient connects to any data source, imports live data into Google Sheets, automates spreadsheet workflows, and exports data into your business systems.
TurnShift is a team calendar and shift scheduling app for Slack and Microsoft Teams (Teams is in beta). Set up who covers support, on-call or the front desk, and TurnShift tells people before their shift, in Slack, Teams or by email. It posts who is on in the channel and shows every schedule on...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Coefficient.io is recommended for professionals and teams in finance, operations, sales, and any business function that relies heavily on data analysis, reporting, and workflow automation. It's particularly beneficial for small to medium-sized enterprises that need to leverage data effectively without investing heavily in complex IT infrastructure.
No analysis of TurnShift yet.
Walkthroughs and reviews on video.
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Stop running shifts in a spreadsheet: TurnShift for Slack
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Coefficient.io and TurnShift.
TurnShift's answer:
TurnShift's answer:
You see and change everything on one calendar. Select days, pick someone, done. Most shift tools send you through forms and settings pages for that. TurnShift then tells people in the Slack or Microsoft Teams channels they already read, and you can run it all from Claude or ChatGPT through its MCP server.
TurnShift's answer:
A schedule takes a few minutes to set up, and assigning a month takes seconds. You only pay for people on an active schedule: with 300 people in Slack and 5 on a schedule, you pay for 5. It is one plan with every feature, 3.50 EUR per person per month billed yearly, and a 14 day trial with no card.
TurnShift's answer:
Team leads and admins at small and medium companies who share a duty: support, on-call, the front desk, office chores. They are on Slack or Microsoft Teams and want to stop asking "who is on today?" in a channel.
TurnShift's answer:
Vincent Voyer built TurnShift in France in 2020, as a simple shift calendar connected to Slack: a team calendar for recurring tasks like PR reviews, who's on support or who's qualifying leads. Algolia, its oldest customer, shares its customer support duty with 50+ engineers on it. In 2026 it got automatic rotations, four languages, free tools and Microsoft Teams.
TurnShift's answer:
Next.js, React and Tailwind, PostgreSQL on PlanetScale, hosted on Vercel, with Stripe for billing and the Slack and Microsoft Teams APIs.
Share your experience with using Coefficient.io and TurnShift. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I do this all the time. The problem at first was I didn’t have access to real-time data from my sources. https://coefficient.io/ has a bunch of Google Sheets connectors you can use for free. Since then I never have to update my... Source: about 4 years ago
Coefficient (https://coefficient.io) | Multiple Roles | Fully Remote | Full time | VC-Backed startup Coefficient is a fully remote, seed-stage SaaS startup based in the SF Bay Area. Started by repeat founders with successful past exits,... - Source: Hacker News / over 4 years ago
Coefficient | Multiple Roles | Fully Remote | Full time | VC-Backed startup | https://coefficient.io. - Source: Hacker News / over 4 years ago
Shameless plug, if you're looking for a simple shift scheduling calendar connected to Slack, I built this: https://turnshift.app. It's a team calendar to share recurring tasks as a team. Things like PR reviews, who's on support, who's... - Source: Hacker News / about 5 years ago
I was lucky to be part of the beta for my SaaS (https://turnshift.app) and I must say this new feature simplifies things A LOT. Especially as a EU business owner, I previously had to sync every VAT tax rate possible, use a complex... - Source: Hacker News / over 5 years ago
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