Independent apps · free to start
Calm, honest apps for your money and your words.
A household budget that never asks for your bank login, and a rewriter that makes your draft sound the way you meant it. No ads, no account needed.
Household budget
One simple budget for your household.
Write down what comes in and goes out, see what’s left until payday, and share it with your partner. No bank login, and nothing reads your accounts.
What’s left, at a glance
One number after the bills still to come, also as a Home and Lock Screen widget.
Shared with your partner
Send a short code. You both add to the same budget on your own phones.
Payday to payday
Monthly from your payday, weekly, fortnightly or four-weekly.
Your data is yours
Export to CSV on every plan. Never sold, never used for ads.
“It’s really turned things around for me. Great that it doesn’t require you to connect a bank account like some apps.”
Rated 4.4 on the App Store · made by one person since 2018. Free with every feature. On iPhone and iPad now · Android coming soon.
Your draft
sorry i missed the deadline, will send it asap
Pick a persona
rwrt · Professional
Please accept my apologies for missing the deadline.
Tap a persona to see the same message, four ways.
AI rewriter
Say it the way you would.
Paste a rough draft and pick a persona. rwrt writes a clearer version plus a few alternative styles, streamed in as they’re written.
Four personas, or your own
Professional, Casual, Academic, Creative, or one you write instructions for.
Alternative styles
Other takes beside the main rewrite, like Executive Brief or Text Message.
No account
No email, no password. Delete all your data from Settings any time.
Searchable history
Every rewrite is kept, rated and easy to find again.
Free to start · 5 rewrites a day · no account needed. On iPhone now · Android coming soon.
Built to be trusted with your money and your words.
No bank logins
Simple Budget Planner never asks for one.
No account needed
Open either app and start.
No ads, nothing sold
Your data stays yours. Export or delete it any time.
A real person answers
Every email and review is read.
Made by one person, not a growth team.
Simple Budget Planner started in 2018 as a way for my wife and me to manage our money. Years and many reviews later, I still build these apps myself and read every email. If something’s missing, tell me and it may well be in the next update.
Mehmet Çetin · founder, Kinematiks · [email protected]
Questions
What is Kinematiks?
Kinematiks is an independent software studio. It makes two apps: Simple Budget Planner, a shared household budget with no bank login, and rwrt, an AI rewriter that puts your text in the tone you pick.
Are the apps free?
Both are free to download and start. Simple Budget Planner: Free with every feature and 40 entries. Premium removes the limit: $17.99 a year or $4.99 a month, 14-day free trial on yearly. rwrt: Free: 5 rewrites per rolling 24 hours, up to 2,500 characters. Pro (weekly, monthly or yearly) gives up to 999 rewrites a day, 10,000 characters and a stronger model.
Do I need to connect my bank to Simple Budget Planner?
No, never. You type in what you spend. There’s no bank login and nothing reads your accounts. You can share the budget with your partner using a short code.
Do I need an account for rwrt?
No. rwrt signs you in anonymously, with no email or password. Your text goes to rwrt’s server and to OpenAI to write the rewrite, and you can delete all your data from Settings.
Is there an Android version?
Android versions of both apps are on the way. Right now you can get Simple Budget Planner for iPhone and iPad, and rwrt for iPhone, on the App Store.
Both are free to start. Try one tonight.
Simple Budget Planner
Household budget · Android coming soon
rwrt
AI rewriter · Android coming soon