GrindProof

GrindProof is an accountability app that keeps a record of what you said you'd do and compares it against what you actually finished. It runs on a fixed daily rhythm. You plan in the morning, you account for it in the evening, and on Sunday it hands back a report on the distance between the two.

The problem it goes after isn't task capture. Most people already have a list somewhere. The problem is that the list quietly rewrites itself. Tasks slide to tomorrow, then to next week, and the plan gets re-made often enough that nobody ever has to sit with the pattern. GrindProof assumes you'll do exactly this, so it keeps the receipts instead of trusting your memory of the week. The site's own framing is that you should stop lying to yourself, and the three anchor points it advertises are 9am to plan the day, 6pm to reckon with it, and Sunday to get the receipts.

The morning check-in opens with what you left unfinished. If three tasks didn't get done yesterday, it asks whether you're carrying them over or starting fresh, which forces a small decision rather than letting things drift silently. In the evening it walks the same list back and asks you to mark each item done or skipped, with room to type why. That reason field is the part that does the work, because a note like "ran out of time after the long meeting" only becomes useful once you have thirty of them stacked up.

Sunday is where the app earns its name. The weekly roast report leads with blunt numbers, a completion percentage, how many tasks you closed out of how many you set, and how many you skipped. Then it gives you a written read on the shape of the week. It calls out streaks worth protecting, categories you dodged every single day, and tasks you've carried over four or more times with the suggestion that you either do them or delete them. It closes on recommendations tied to your own behavior, along the lines of scheduling admin work before 10am while your avoidance instincts are still asleep, or cutting two items off your daily plan because you consistently overcommit late in the week.

It doesn't run purely on self-reporting. GrindProof integrates with GitHub to monitor development activity and with Google Calendar to track time and commitments, so the evening reckoning has something external to weigh your answers against. Both integrations are authorized by you, and you can disconnect either one from account settings whenever you want, though the privacy policy notes that disconnecting removes future access rather than immediately deleting data already synced. Those two are the entire integration surface today, so if your work doesn't leave a trace in a repo or on a calendar, the app is back to taking your word for it. On the data side the disclosures are more complete than most apps this young bother with. The privacy policy spells out that it collects account and profile information, your task and goal data, communication data, usage and device data, and whatever the GitHub and Google Calendar integrations pull in once you authorize them. Data is stored on Supabase, encrypted in transit over SSL/TLS and encrypted at rest, and the policy covers GDPR and CCPA rights including access, correction, deletion and portability. It states plainly that your information isn't sold, traded or rented. Both the privacy policy and the terms were last updated in November 2025.

The intended user is fairly specific. This is for people who already know what they should be doing and keep not doing it, especially solo builders and developers working without a manager or a team to answer to. The founder, Alfred Inyang, frames it plainly, saying he built it because he was sick of his own bullshit, and that what finally worked wasn't another habit tracker but being looked at by something that knew what he'd promised. There are no streaks to game and no badges to collect, which is a deliberate rejection of the usual gamification playbook. The tone is the differentiator and it's also the filter. The site says outright that if you want a tool that's nice to you, this isn't it. That's a genuine fit question rather than a marketing pose, since an app whose headline output is a weekly roast only works if you actually want to get caught.

It installs as a progressive web app instead of through an app store, so it runs on desktop and phone straight from the browser, with local storage and a service worker giving it offline access. Signing up is free today, with no pricing page published and no paid tier advertised, though the terms reserve the right to change fee structures later, so treat the current cost as free rather than permanently free. A few other terms are worth knowing going in. You're limited to one account per person, the license granted is for personal non-commercial use, you must be at least 13 and have parental consent if you're under 18, and disputes fall under US law with binding arbitration and a class action waiver. Support runs through the published address at support@grindproof.co, with a stated response target of about 48 hours.