The reason food diaries fail is almost never the diary. It is the Tuesday you forgot, then the Wednesday, and by Friday there is nothing worth opening. usnapit's reminders exist for that gap and nothing else - and every one of them is written and scheduled on your phone. No push server, no notification token, nothing about what you eat leaving the device to decide when to buzz you.
The count is worked out from the log itself, so an unfinished day is never a broken one - today is still today until it is over. Log at 11pm and the run is intact. Most streak counters break the moment they are wrong about a single day; this one cannot drift, because it is not a counter.
Every seven days of your longest run earns a freeze, up to two saved. Wake up to a blank yesterday and usnapit offers to spend one on it and keep the run going. A streak that shatters on a single hospital visit or long-haul flight teaches you that logging is fragile - which is the opposite of the thing worth learning.
"First kilo down" appears when your smoothed trend crosses it - not when one light morning says so and the next heavy one takes it back. Shown once, when you next open the app, in the unit you actually think in, and tied to your body rather than to how much you used the app. It needs a weight goal to measure against.
Every day you log, every weigh-in, every run you keep earns coins. Nothing in the app pays out for a lower number on the scale or a smaller number on the plate, and nothing you unlock changes a figure the app tells you. The currency is for showing up, because showing up is the whole game.
The Rewards screen shows every line of how you earned them - days logged, weigh-ins, runs kept, a health connection made - and how many days each came from. A balance with no account of where it came from invites exactly one question, so the answer is on the screen.
Bronze at 250 coins, Silver at 1,000, Gold at 3,000, Platinum at 7,500, Diamond at 10,000 - from coins earned over your lifetime, so spending never demotes you. Your medal sits beside your profile picture on Home, and goes on your share card if you want it there.
Five hundred coins unlock a new color theme for the whole app. Badges - 30 days logged, a 14-day run, a goal you set and reached - are earned and only earned. A badge is a claim about what you did, printed on a picture you send to other people, and a claim you can buy is not a claim.
Reach the weight goal you set yourself and the app says so - once, with fireworks, and a diamond that no amount of coins can buy. Coins start from your first logged meal, not from history imported from a health app, so nobody arrives on day one already Gold.