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Programs, workout logging and session prep for personal trainers. Clients log every set from their phone, even offline, and before each session you see how the last one went. Free during the beta.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | mailclark.ai | coachstack.pro |
| Pricing | ||
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of MailClark yet.
Coachstack is built for personal trainers who coach in person and online. Import your programs and clients from Excel or CSV. Clients log their sets from the phone's browser, with nothing to install and no signal needed. You can log on the same session from your own phone. Before every...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
MailClark 2.0 - Manage Your Shared Inbox in Microsoft Teams
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MailClark and Coachstack.
Coachstack's answer:
Next.js and React with TypeScript, Supabase (PostgreSQL with row-level security), Tailwind CSS, hosted on Vercel.
Coachstack's answer:
Coachstack is built around the decision a coach makes before each session. One page shows how the last session went: sets done, pain reported, messages waiting, and the session planned for today next to what the client lifted last time. Load increases are calculated from the logged sets and arrive as proposals with their reasons; nothing changes the programme until the coach approves. If a client reports pain on an exercise, no increase is proposed on it until the coach has read the report.
Coachstack's answer:
Because it keeps the training record and the coaching decision in one place. Clients log every set from the phone's browser, with nothing to install, and the logger keeps working without signal. The coach can log on the same session from their own phone or tablet. Programmes and clients come in from Excel or CSV, so there is no starting from zero. It is free during the beta, in English and Italian.
Coachstack's answer:
Personal trainers who coach both in person and online: independent coaches and small studios run by one coach, with clients who train in the gym with them and on their own between sessions.
Coachstack's answer:
Many personal trainers still run their business on spreadsheets, paper notes and chat messages: the programme lives in one file, the client's sets in another, and the reason a load was changed lives nowhere. Coachstack was built in Italy to put those pieces together, so that every session is recorded once and the next one starts from what happened in the last.
Share your experience with using MailClark and Coachstack. For example, how are they different and which one is better?
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